/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/triangular-longest-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-29289db [2021-06-05 07:57:41,616 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 07:57:41,618 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 07:57:41,646 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-05 07:57:41,659 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-05 07:57:41,661 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-05 07:57:41,662 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-05 07:57:41,662 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-05 07:57:41,664 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-05 07:57:41,665 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-05 07:57:41,666 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-05 07:57:41,670 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-05 07:57:41,671 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-05 07:57:41,671 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-05 07:57:41,929 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-05 07:57:41,930 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-05 07:57:41,935 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-05 07:57:41,940 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 07:57:41,940 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 07:57:41,941 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 07:57:41,944 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf [2021-06-05 07:57:41,971 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 07:57:41,971 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 07:57:41,972 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 07:57:41,972 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 07:57:41,973 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 07:57:41,974 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 07:57:41,974 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 07:57:41,974 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 07:57:41,974 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 07:57:41,974 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 07:57:41,975 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 07:57:41,975 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 07:57:41,975 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 07:57:41,975 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 07:57:41,975 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 07:57:41,975 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 07:57:41,975 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 07:57:41,975 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 07:57:41,975 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 07:57:41,975 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 07:57:41,976 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 07:57:41,976 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 07:57:41,976 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 07:57:41,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 07:57:41,976 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 07:57:41,976 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 07:57:41,976 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 07:57:41,976 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 07:57:41,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 07:57:41,976 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 07:57:41,976 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 07:57:41,977 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2021-06-05 07:57:41,977 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 07:57:42,223 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 07:57:42,242 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 07:57:42,244 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 07:57:42,245 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-05 07:57:42,245 INFO L275 PluginConnector]: CDTParser initialized [2021-06-05 07:57:42,246 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longest-2.i [2021-06-05 07:57:42,303 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50278ed2e/0ceec923d26d49dfad86b01277212b68/FLAGb71dce55b [2021-06-05 07:57:42,708 INFO L306 CDTParser]: Found 1 translation units. [2021-06-05 07:57:42,708 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-2.i [2021-06-05 07:57:42,722 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50278ed2e/0ceec923d26d49dfad86b01277212b68/FLAGb71dce55b [2021-06-05 07:57:42,735 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50278ed2e/0ceec923d26d49dfad86b01277212b68 [2021-06-05 07:57:42,737 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 07:57:42,739 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-05 07:57:42,741 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-05 07:57:42,742 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-05 07:57:42,744 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-05 07:57:42,745 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 07:57:42" (1/1) ... [2021-06-05 07:57:42,746 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d0f08db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:57:42, skipping insertion in model container [2021-06-05 07:57:42,746 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 07:57:42" (1/1) ... [2021-06-05 07:57:42,750 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-05 07:57:42,785 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-05 07:57:43,075 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-2.i[30964,30977] [2021-06-05 07:57:43,079 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 07:57:43,085 INFO L203 MainTranslator]: Completed pre-run [2021-06-05 07:57:43,120 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-2.i[30964,30977] [2021-06-05 07:57:43,121 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 07:57:43,165 INFO L208 MainTranslator]: Completed translation [2021-06-05 07:57:43,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:57:43 WrapperNode [2021-06-05 07:57:43,165 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-05 07:57:43,166 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 07:57:43,166 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 07:57:43,166 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 07:57:43,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:57:43" (1/1) ... [2021-06-05 07:57:43,192 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:57:43" (1/1) ... [2021-06-05 07:57:43,207 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 07:57:43,208 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 07:57:43,208 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 07:57:43,208 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 07:57:43,213 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:57:43" (1/1) ... [2021-06-05 07:57:43,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:57:43" (1/1) ... [2021-06-05 07:57:43,216 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:57:43" (1/1) ... [2021-06-05 07:57:43,217 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:57:43" (1/1) ... [2021-06-05 07:57:43,231 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:57:43" (1/1) ... [2021-06-05 07:57:43,233 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:57:43" (1/1) ... [2021-06-05 07:57:43,234 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:57:43" (1/1) ... [2021-06-05 07:57:43,236 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 07:57:43,236 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 07:57:43,236 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 07:57:43,236 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 07:57:43,237 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:57:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 07:57:43,280 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2021-06-05 07:57:43,281 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2021-06-05 07:57:43,281 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2021-06-05 07:57:43,281 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2021-06-05 07:57:43,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-05 07:57:43,281 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-05 07:57:43,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-05 07:57:43,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-05 07:57:43,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-05 07:57:43,281 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-05 07:57:43,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 07:57:43,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 07:57:43,282 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 07:57:43,560 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 07:57:43,560 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-06-05 07:57:43,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 07:57:43 BoogieIcfgContainer [2021-06-05 07:57:43,562 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 07:57:43,563 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 07:57:43,563 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 07:57:43,565 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 07:57:43,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.06 07:57:42" (1/3) ... [2021-06-05 07:57:43,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ed8c073 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 07:57:43, skipping insertion in model container [2021-06-05 07:57:43,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:57:43" (2/3) ... [2021-06-05 07:57:43,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ed8c073 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 07:57:43, skipping insertion in model container [2021-06-05 07:57:43,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 07:57:43" (3/3) ... [2021-06-05 07:57:43,567 INFO L111 eAbstractionObserver]: Analyzing ICFG triangular-longest-2.i [2021-06-05 07:57:43,571 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 07:57:43,571 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 07:57:43,572 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 07:57:43,572 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 07:57:43,598 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,598 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,598 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,599 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,599 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,599 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,599 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,599 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,599 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,600 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,600 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,600 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,600 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,600 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,601 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,601 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,601 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,601 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,601 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,601 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,601 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,601 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,602 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,602 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,602 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,603 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,603 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,603 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,603 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,603 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,603 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,603 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,604 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,604 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,604 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,604 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,604 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,605 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,605 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,605 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,605 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,605 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,605 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,606 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,606 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,606 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,606 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,606 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,606 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,606 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,606 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,606 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,607 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,607 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,608 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,608 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,609 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,610 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,610 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,610 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,610 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,610 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,615 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,616 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,616 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,616 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,616 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,616 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:57:43,618 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-05 07:57:43,633 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-06-05 07:57:43,653 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 07:57:43,653 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 07:57:43,653 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 07:57:43,653 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 07:57:43,653 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 07:57:43,654 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 07:57:43,654 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 07:57:43,654 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 07:57:43,663 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 68 places, 66 transitions, 142 flow [2021-06-05 07:57:43,728 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1680 states, 1678 states have (on average 3.138259833134684) internal successors, (5266), 1679 states have internal predecessors, (5266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:43,733 INFO L276 IsEmpty]: Start isEmpty. Operand has 1680 states, 1678 states have (on average 3.138259833134684) internal successors, (5266), 1679 states have internal predecessors, (5266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:43,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-06-05 07:57:43,744 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:43,745 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:43,745 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:43,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:43,749 INFO L82 PathProgramCache]: Analyzing trace with hash 855509438, now seen corresponding path program 1 times [2021-06-05 07:57:43,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:43,755 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73913123] [2021-06-05 07:57:43,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:43,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:43,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:43,997 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:43,998 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73913123] [2021-06-05 07:57:43,998 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73913123] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:57:43,998 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:57:43,998 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 07:57:43,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251625702] [2021-06-05 07:57:44,001 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 07:57:44,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:44,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 07:57:44,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-06-05 07:57:44,014 INFO L87 Difference]: Start difference. First operand has 1680 states, 1678 states have (on average 3.138259833134684) internal successors, (5266), 1679 states have internal predecessors, (5266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:44,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:44,118 INFO L93 Difference]: Finished difference Result 3294 states and 9568 transitions. [2021-06-05 07:57:44,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 07:57:44,119 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-06-05 07:57:44,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:44,134 INFO L225 Difference]: With dead ends: 3294 [2021-06-05 07:57:44,134 INFO L226 Difference]: Without dead ends: 1248 [2021-06-05 07:57:44,135 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 44.6ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-06-05 07:57:44,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2021-06-05 07:57:44,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 800. [2021-06-05 07:57:44,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 799 states have (on average 2.728410513141427) internal successors, (2180), 799 states have internal predecessors, (2180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:44,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 2180 transitions. [2021-06-05 07:57:44,192 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 2180 transitions. Word has length 32 [2021-06-05 07:57:44,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:44,193 INFO L482 AbstractCegarLoop]: Abstraction has 800 states and 2180 transitions. [2021-06-05 07:57:44,193 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:44,193 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 2180 transitions. [2021-06-05 07:57:44,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 07:57:44,195 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:44,195 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:44,195 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 07:57:44,195 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:44,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:44,196 INFO L82 PathProgramCache]: Analyzing trace with hash 2058414913, now seen corresponding path program 1 times [2021-06-05 07:57:44,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:44,196 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498117392] [2021-06-05 07:57:44,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:44,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:44,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:44,269 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:44,269 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498117392] [2021-06-05 07:57:44,269 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498117392] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:57:44,269 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:57:44,269 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 07:57:44,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634292512] [2021-06-05 07:57:44,270 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 07:57:44,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:44,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 07:57:44,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-05 07:57:44,271 INFO L87 Difference]: Start difference. First operand 800 states and 2180 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:44,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:44,367 INFO L93 Difference]: Finished difference Result 1302 states and 3436 transitions. [2021-06-05 07:57:44,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 07:57:44,367 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-05 07:57:44,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:44,374 INFO L225 Difference]: With dead ends: 1302 [2021-06-05 07:57:44,375 INFO L226 Difference]: Without dead ends: 920 [2021-06-05 07:57:44,375 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 60.6ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-06-05 07:57:44,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2021-06-05 07:57:44,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 864. [2021-06-05 07:57:44,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 863 states have (on average 2.6882966396292005) internal successors, (2320), 863 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:44,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 2320 transitions. [2021-06-05 07:57:44,398 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 2320 transitions. Word has length 36 [2021-06-05 07:57:44,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:44,398 INFO L482 AbstractCegarLoop]: Abstraction has 864 states and 2320 transitions. [2021-06-05 07:57:44,398 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:44,398 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 2320 transitions. [2021-06-05 07:57:44,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-06-05 07:57:44,400 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:44,400 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:44,401 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 07:57:44,401 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:44,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:44,401 INFO L82 PathProgramCache]: Analyzing trace with hash 307394794, now seen corresponding path program 1 times [2021-06-05 07:57:44,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:44,402 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977731965] [2021-06-05 07:57:44,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:44,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:44,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:44,481 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:44,481 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977731965] [2021-06-05 07:57:44,481 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977731965] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:57:44,481 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:57:44,481 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 07:57:44,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214310773] [2021-06-05 07:57:44,482 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 07:57:44,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:44,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 07:57:44,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 07:57:44,483 INFO L87 Difference]: Start difference. First operand 864 states and 2320 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:44,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:44,633 INFO L93 Difference]: Finished difference Result 1304 states and 3456 transitions. [2021-06-05 07:57:44,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 07:57:44,634 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-06-05 07:57:44,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:44,666 INFO L225 Difference]: With dead ends: 1304 [2021-06-05 07:57:44,666 INFO L226 Difference]: Without dead ends: 1044 [2021-06-05 07:57:44,667 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 106.9ms TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2021-06-05 07:57:44,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2021-06-05 07:57:44,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 876. [2021-06-05 07:57:44,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 875 states have (on average 2.7062857142857144) internal successors, (2368), 875 states have internal predecessors, (2368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:44,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 2368 transitions. [2021-06-05 07:57:44,688 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 2368 transitions. Word has length 40 [2021-06-05 07:57:44,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:44,689 INFO L482 AbstractCegarLoop]: Abstraction has 876 states and 2368 transitions. [2021-06-05 07:57:44,689 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:44,689 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 2368 transitions. [2021-06-05 07:57:44,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-06-05 07:57:44,691 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:44,692 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:44,692 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 07:57:44,692 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:44,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:44,693 INFO L82 PathProgramCache]: Analyzing trace with hash -258094508, now seen corresponding path program 2 times [2021-06-05 07:57:44,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:44,693 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506555605] [2021-06-05 07:57:44,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:44,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:44,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:44,779 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:44,779 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506555605] [2021-06-05 07:57:44,780 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506555605] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:57:44,780 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:57:44,780 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 07:57:44,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048045414] [2021-06-05 07:57:44,780 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 07:57:44,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:44,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 07:57:44,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-05 07:57:44,781 INFO L87 Difference]: Start difference. First operand 876 states and 2368 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:44,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:44,882 INFO L93 Difference]: Finished difference Result 1836 states and 4872 transitions. [2021-06-05 07:57:44,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 07:57:44,884 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-06-05 07:57:44,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:44,889 INFO L225 Difference]: With dead ends: 1836 [2021-06-05 07:57:44,889 INFO L226 Difference]: Without dead ends: 1505 [2021-06-05 07:57:44,893 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 72.5ms TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-06-05 07:57:44,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2021-06-05 07:57:44,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 975. [2021-06-05 07:57:44,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 975 states, 974 states have (on average 2.6981519507186857) internal successors, (2628), 974 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:44,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 2628 transitions. [2021-06-05 07:57:44,913 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 2628 transitions. Word has length 40 [2021-06-05 07:57:44,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:44,914 INFO L482 AbstractCegarLoop]: Abstraction has 975 states and 2628 transitions. [2021-06-05 07:57:44,914 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:44,915 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 2628 transitions. [2021-06-05 07:57:44,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-06-05 07:57:44,915 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:44,915 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:44,916 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 07:57:44,916 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:44,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:44,916 INFO L82 PathProgramCache]: Analyzing trace with hash 129784312, now seen corresponding path program 3 times [2021-06-05 07:57:44,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:44,916 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226547189] [2021-06-05 07:57:44,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:44,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:44,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:44,985 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:44,985 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226547189] [2021-06-05 07:57:44,985 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226547189] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:57:44,986 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:57:44,986 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 07:57:44,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777453140] [2021-06-05 07:57:44,986 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 07:57:44,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:44,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 07:57:44,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-05 07:57:44,987 INFO L87 Difference]: Start difference. First operand 975 states and 2628 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:45,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:45,067 INFO L93 Difference]: Finished difference Result 2211 states and 5878 transitions. [2021-06-05 07:57:45,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 07:57:45,068 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-06-05 07:57:45,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:45,074 INFO L225 Difference]: With dead ends: 2211 [2021-06-05 07:57:45,074 INFO L226 Difference]: Without dead ends: 1944 [2021-06-05 07:57:45,075 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 56.2ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-06-05 07:57:45,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1944 states. [2021-06-05 07:57:45,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1944 to 1127. [2021-06-05 07:57:45,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 1126 states have (on average 2.769982238010657) internal successors, (3119), 1126 states have internal predecessors, (3119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:45,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 3119 transitions. [2021-06-05 07:57:45,102 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 3119 transitions. Word has length 40 [2021-06-05 07:57:45,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:45,102 INFO L482 AbstractCegarLoop]: Abstraction has 1127 states and 3119 transitions. [2021-06-05 07:57:45,102 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:45,102 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 3119 transitions. [2021-06-05 07:57:45,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-06-05 07:57:45,103 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:45,103 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:45,103 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-05 07:57:45,103 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:45,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:45,104 INFO L82 PathProgramCache]: Analyzing trace with hash 152127562, now seen corresponding path program 4 times [2021-06-05 07:57:45,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:45,104 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038860120] [2021-06-05 07:57:45,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:45,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:45,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:45,179 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:45,179 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038860120] [2021-06-05 07:57:45,179 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038860120] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:57:45,179 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:57:45,179 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 07:57:45,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837175859] [2021-06-05 07:57:45,179 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 07:57:45,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:45,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 07:57:45,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 07:57:45,180 INFO L87 Difference]: Start difference. First operand 1127 states and 3119 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:45,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:45,290 INFO L93 Difference]: Finished difference Result 1671 states and 4527 transitions. [2021-06-05 07:57:45,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 07:57:45,291 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-06-05 07:57:45,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:45,296 INFO L225 Difference]: With dead ends: 1671 [2021-06-05 07:57:45,296 INFO L226 Difference]: Without dead ends: 1173 [2021-06-05 07:57:45,296 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 82.0ms TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-06-05 07:57:45,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2021-06-05 07:57:45,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 922. [2021-06-05 07:57:45,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 922 states, 921 states have (on average 2.732899022801303) internal successors, (2517), 921 states have internal predecessors, (2517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:45,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 2517 transitions. [2021-06-05 07:57:45,313 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 2517 transitions. Word has length 40 [2021-06-05 07:57:45,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:45,314 INFO L482 AbstractCegarLoop]: Abstraction has 922 states and 2517 transitions. [2021-06-05 07:57:45,314 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:45,314 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 2517 transitions. [2021-06-05 07:57:45,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-06-05 07:57:45,315 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:45,315 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:45,315 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-05 07:57:45,315 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:45,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:45,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1301576209, now seen corresponding path program 1 times [2021-06-05 07:57:45,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:45,315 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720239286] [2021-06-05 07:57:45,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:45,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:45,372 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:45,372 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:45,372 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720239286] [2021-06-05 07:57:45,372 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720239286] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:45,372 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676697398] [2021-06-05 07:57:45,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:45,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:45,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 07:57:45,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:45,619 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:45,619 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676697398] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:45,619 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:45,619 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-06-05 07:57:45,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641935133] [2021-06-05 07:57:45,620 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 07:57:45,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:45,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 07:57:45,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-06-05 07:57:45,620 INFO L87 Difference]: Start difference. First operand 922 states and 2517 transitions. Second operand has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:45,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:45,756 INFO L93 Difference]: Finished difference Result 1526 states and 4027 transitions. [2021-06-05 07:57:45,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-05 07:57:45,756 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-06-05 07:57:45,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:45,760 INFO L225 Difference]: With dead ends: 1526 [2021-06-05 07:57:45,760 INFO L226 Difference]: Without dead ends: 1256 [2021-06-05 07:57:45,760 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 114.8ms TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:57:45,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1256 states. [2021-06-05 07:57:45,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1256 to 1113. [2021-06-05 07:57:45,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1113 states, 1112 states have (on average 2.741007194244604) internal successors, (3048), 1112 states have internal predecessors, (3048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:45,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1113 states to 1113 states and 3048 transitions. [2021-06-05 07:57:45,785 INFO L78 Accepts]: Start accepts. Automaton has 1113 states and 3048 transitions. Word has length 45 [2021-06-05 07:57:45,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:45,785 INFO L482 AbstractCegarLoop]: Abstraction has 1113 states and 3048 transitions. [2021-06-05 07:57:45,785 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:45,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1113 states and 3048 transitions. [2021-06-05 07:57:45,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-06-05 07:57:45,786 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:45,787 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:46,003 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-06-05 07:57:46,003 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:46,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:46,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1689455029, now seen corresponding path program 2 times [2021-06-05 07:57:46,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:46,004 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689943465] [2021-06-05 07:57:46,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:46,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:46,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:46,059 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:46,059 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689943465] [2021-06-05 07:57:46,059 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689943465] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:46,059 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117354161] [2021-06-05 07:57:46,059 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:46,132 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:57:46,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:57:46,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-05 07:57:46,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:46,212 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:46,212 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117354161] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:46,212 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:46,212 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2021-06-05 07:57:46,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080636322] [2021-06-05 07:57:46,212 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 07:57:46,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:46,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 07:57:46,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-06-05 07:57:46,213 INFO L87 Difference]: Start difference. First operand 1113 states and 3048 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:46,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:46,329 INFO L93 Difference]: Finished difference Result 2408 states and 6431 transitions. [2021-06-05 07:57:46,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 07:57:46,329 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-06-05 07:57:46,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:46,336 INFO L225 Difference]: With dead ends: 2408 [2021-06-05 07:57:46,336 INFO L226 Difference]: Without dead ends: 2138 [2021-06-05 07:57:46,337 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 89.4ms TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:57:46,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2138 states. [2021-06-05 07:57:46,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2138 to 1293. [2021-06-05 07:57:46,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1293 states, 1292 states have (on average 2.791795665634675) internal successors, (3607), 1292 states have internal predecessors, (3607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:46,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1293 states to 1293 states and 3607 transitions. [2021-06-05 07:57:46,364 INFO L78 Accepts]: Start accepts. Automaton has 1293 states and 3607 transitions. Word has length 45 [2021-06-05 07:57:46,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:46,365 INFO L482 AbstractCegarLoop]: Abstraction has 1293 states and 3607 transitions. [2021-06-05 07:57:46,365 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:46,365 INFO L276 IsEmpty]: Start isEmpty. Operand 1293 states and 3607 transitions. [2021-06-05 07:57:46,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-06-05 07:57:46,366 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:46,366 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:46,580 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:46,581 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:46,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:46,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1711798279, now seen corresponding path program 3 times [2021-06-05 07:57:46,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:46,581 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879444751] [2021-06-05 07:57:46,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:46,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:46,627 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:46,627 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:46,627 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879444751] [2021-06-05 07:57:46,627 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879444751] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:46,627 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053556364] [2021-06-05 07:57:46,627 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:46,693 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-06-05 07:57:46,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:57:46,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-05 07:57:46,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:46,775 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:46,776 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053556364] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:46,776 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:46,776 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-06-05 07:57:46,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111217383] [2021-06-05 07:57:46,776 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 07:57:46,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:46,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 07:57:46,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-06-05 07:57:46,777 INFO L87 Difference]: Start difference. First operand 1293 states and 3607 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:46,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:46,992 INFO L93 Difference]: Finished difference Result 2196 states and 5861 transitions. [2021-06-05 07:57:46,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 07:57:46,993 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-06-05 07:57:46,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:46,998 INFO L225 Difference]: With dead ends: 2196 [2021-06-05 07:57:46,998 INFO L226 Difference]: Without dead ends: 1621 [2021-06-05 07:57:46,998 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 161.3ms TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2021-06-05 07:57:47,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1621 states. [2021-06-05 07:57:47,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1621 to 1328. [2021-06-05 07:57:47,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1328 states, 1327 states have (on average 2.7754333082140166) internal successors, (3683), 1327 states have internal predecessors, (3683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:47,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1328 states to 1328 states and 3683 transitions. [2021-06-05 07:57:47,020 INFO L78 Accepts]: Start accepts. Automaton has 1328 states and 3683 transitions. Word has length 45 [2021-06-05 07:57:47,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:47,021 INFO L482 AbstractCegarLoop]: Abstraction has 1328 states and 3683 transitions. [2021-06-05 07:57:47,021 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:47,021 INFO L276 IsEmpty]: Start isEmpty. Operand 1328 states and 3683 transitions. [2021-06-05 07:57:47,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-06-05 07:57:47,022 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:47,022 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:47,240 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:47,241 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:47,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:47,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1229914011, now seen corresponding path program 1 times [2021-06-05 07:57:47,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:47,241 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339157434] [2021-06-05 07:57:47,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:47,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:47,324 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:47,326 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:47,326 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339157434] [2021-06-05 07:57:47,326 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339157434] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:47,326 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203735513] [2021-06-05 07:57:47,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:47,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:47,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-05 07:57:47,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:47,497 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:47,497 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203735513] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:47,497 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:47,497 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-06-05 07:57:47,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182757845] [2021-06-05 07:57:47,497 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 07:57:47,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:47,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 07:57:47,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-06-05 07:57:47,498 INFO L87 Difference]: Start difference. First operand 1328 states and 3683 transitions. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:47,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:47,648 INFO L93 Difference]: Finished difference Result 2068 states and 5483 transitions. [2021-06-05 07:57:47,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 07:57:47,648 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-06-05 07:57:47,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:47,654 INFO L225 Difference]: With dead ends: 2068 [2021-06-05 07:57:47,654 INFO L226 Difference]: Without dead ends: 1734 [2021-06-05 07:57:47,654 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 125.8ms TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2021-06-05 07:57:47,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2021-06-05 07:57:47,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 1413. [2021-06-05 07:57:47,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1413 states, 1412 states have (on average 2.7287535410764874) internal successors, (3853), 1412 states have internal predecessors, (3853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:47,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1413 states to 1413 states and 3853 transitions. [2021-06-05 07:57:47,678 INFO L78 Accepts]: Start accepts. Automaton has 1413 states and 3853 transitions. Word has length 50 [2021-06-05 07:57:47,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:47,678 INFO L482 AbstractCegarLoop]: Abstraction has 1413 states and 3853 transitions. [2021-06-05 07:57:47,678 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:47,678 INFO L276 IsEmpty]: Start isEmpty. Operand 1413 states and 3853 transitions. [2021-06-05 07:57:47,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-06-05 07:57:47,679 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:47,679 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:47,897 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:47,897 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:47,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:47,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1568318167, now seen corresponding path program 2 times [2021-06-05 07:57:47,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:47,898 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845250458] [2021-06-05 07:57:47,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:47,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:47,963 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:47,963 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:47,963 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845250458] [2021-06-05 07:57:47,963 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845250458] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:47,963 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057049148] [2021-06-05 07:57:47,963 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:48,016 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:57:48,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:57:48,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-05 07:57:48,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:48,096 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:48,096 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057049148] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:48,096 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:48,096 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-06-05 07:57:48,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577463000] [2021-06-05 07:57:48,096 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 07:57:48,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:48,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 07:57:48,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-06-05 07:57:48,097 INFO L87 Difference]: Start difference. First operand 1413 states and 3853 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:48,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:48,183 INFO L93 Difference]: Finished difference Result 2061 states and 5277 transitions. [2021-06-05 07:57:48,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 07:57:48,184 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-06-05 07:57:48,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:48,200 INFO L225 Difference]: With dead ends: 2061 [2021-06-05 07:57:48,201 INFO L226 Difference]: Without dead ends: 1791 [2021-06-05 07:57:48,201 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 68.6ms TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:57:48,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1791 states. [2021-06-05 07:57:48,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1791 to 1428. [2021-06-05 07:57:48,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1427 states have (on average 2.721093202522775) internal successors, (3883), 1427 states have internal predecessors, (3883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:48,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 3883 transitions. [2021-06-05 07:57:48,264 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 3883 transitions. Word has length 50 [2021-06-05 07:57:48,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:48,264 INFO L482 AbstractCegarLoop]: Abstraction has 1428 states and 3883 transitions. [2021-06-05 07:57:48,264 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:48,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 3883 transitions. [2021-06-05 07:57:48,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-06-05 07:57:48,266 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:48,266 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:48,482 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-06-05 07:57:48,483 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:48,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:48,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1011406841, now seen corresponding path program 3 times [2021-06-05 07:57:48,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:48,483 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460126625] [2021-06-05 07:57:48,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:48,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:48,554 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:48,554 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:48,554 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460126625] [2021-06-05 07:57:48,554 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460126625] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:48,554 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875099449] [2021-06-05 07:57:48,555 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:48,631 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 07:57:48,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:57:48,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-05 07:57:48,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:48,710 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:48,711 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875099449] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:48,711 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:48,711 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2021-06-05 07:57:48,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642048950] [2021-06-05 07:57:48,711 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 07:57:48,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:48,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 07:57:48,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-06-05 07:57:48,712 INFO L87 Difference]: Start difference. First operand 1428 states and 3883 transitions. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:48,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:48,872 INFO L93 Difference]: Finished difference Result 2006 states and 5197 transitions. [2021-06-05 07:57:48,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 07:57:48,873 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-06-05 07:57:48,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:48,876 INFO L225 Difference]: With dead ends: 2006 [2021-06-05 07:57:48,876 INFO L226 Difference]: Without dead ends: 1736 [2021-06-05 07:57:48,876 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 115.7ms TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2021-06-05 07:57:48,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1736 states. [2021-06-05 07:57:48,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1736 to 1428. [2021-06-05 07:57:48,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1427 states have (on average 2.7245970567624385) internal successors, (3888), 1427 states have internal predecessors, (3888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:48,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 3888 transitions. [2021-06-05 07:57:48,899 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 3888 transitions. Word has length 50 [2021-06-05 07:57:48,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:48,899 INFO L482 AbstractCegarLoop]: Abstraction has 1428 states and 3888 transitions. [2021-06-05 07:57:48,899 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:48,899 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 3888 transitions. [2021-06-05 07:57:48,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-06-05 07:57:48,901 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:48,901 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:49,116 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:49,117 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:49,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:49,117 INFO L82 PathProgramCache]: Analyzing trace with hash -21240761, now seen corresponding path program 4 times [2021-06-05 07:57:49,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:49,117 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935708951] [2021-06-05 07:57:49,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:49,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:49,164 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:49,164 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:49,164 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935708951] [2021-06-05 07:57:49,164 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935708951] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:49,164 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180346098] [2021-06-05 07:57:49,165 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:49,234 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:57:49,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:57:49,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-05 07:57:49,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:49,324 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:49,324 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180346098] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:49,324 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:49,324 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-06-05 07:57:49,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540377615] [2021-06-05 07:57:49,325 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 07:57:49,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:49,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 07:57:49,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-06-05 07:57:49,325 INFO L87 Difference]: Start difference. First operand 1428 states and 3888 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:49,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:49,459 INFO L93 Difference]: Finished difference Result 2798 states and 7421 transitions. [2021-06-05 07:57:49,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 07:57:49,459 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-06-05 07:57:49,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:49,463 INFO L225 Difference]: With dead ends: 2798 [2021-06-05 07:57:49,463 INFO L226 Difference]: Without dead ends: 2528 [2021-06-05 07:57:49,464 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 98.4ms TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:57:49,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2528 states. [2021-06-05 07:57:49,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2528 to 1608. [2021-06-05 07:57:49,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1608 states, 1607 states have (on average 2.7672682016179215) internal successors, (4447), 1607 states have internal predecessors, (4447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:49,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1608 states to 1608 states and 4447 transitions. [2021-06-05 07:57:49,492 INFO L78 Accepts]: Start accepts. Automaton has 1608 states and 4447 transitions. Word has length 50 [2021-06-05 07:57:49,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:49,492 INFO L482 AbstractCegarLoop]: Abstraction has 1608 states and 4447 transitions. [2021-06-05 07:57:49,492 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:49,493 INFO L276 IsEmpty]: Start isEmpty. Operand 1608 states and 4447 transitions. [2021-06-05 07:57:49,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-06-05 07:57:49,494 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:49,494 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:49,704 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:49,705 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:49,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:49,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1102489, now seen corresponding path program 5 times [2021-06-05 07:57:49,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:49,705 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396644767] [2021-06-05 07:57:49,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:49,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:49,748 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:49,749 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:49,749 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396644767] [2021-06-05 07:57:49,749 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396644767] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:49,749 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373910800] [2021-06-05 07:57:49,749 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:49,810 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 07:57:49,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:57:49,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-05 07:57:49,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:49,906 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:49,906 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373910800] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:49,906 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:49,906 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2021-06-05 07:57:49,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495308760] [2021-06-05 07:57:49,906 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 07:57:49,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:49,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 07:57:49,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-06-05 07:57:49,907 INFO L87 Difference]: Start difference. First operand 1608 states and 4447 transitions. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:50,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:50,097 INFO L93 Difference]: Finished difference Result 2285 states and 6121 transitions. [2021-06-05 07:57:50,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 07:57:50,097 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-06-05 07:57:50,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:50,101 INFO L225 Difference]: With dead ends: 2285 [2021-06-05 07:57:50,101 INFO L226 Difference]: Without dead ends: 1706 [2021-06-05 07:57:50,102 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 152.1ms TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2021-06-05 07:57:50,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1706 states. [2021-06-05 07:57:50,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1706 to 1313. [2021-06-05 07:57:50,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1313 states, 1312 states have (on average 2.7271341463414633) internal successors, (3578), 1312 states have internal predecessors, (3578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:50,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1313 states to 1313 states and 3578 transitions. [2021-06-05 07:57:50,124 INFO L78 Accepts]: Start accepts. Automaton has 1313 states and 3578 transitions. Word has length 50 [2021-06-05 07:57:50,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:50,124 INFO L482 AbstractCegarLoop]: Abstraction has 1313 states and 3578 transitions. [2021-06-05 07:57:50,124 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:50,124 INFO L276 IsEmpty]: Start isEmpty. Operand 1313 states and 3578 transitions. [2021-06-05 07:57:50,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-06-05 07:57:50,126 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:50,126 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:50,341 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-06-05 07:57:50,341 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:50,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:50,341 INFO L82 PathProgramCache]: Analyzing trace with hash 117785766, now seen corresponding path program 6 times [2021-06-05 07:57:50,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:50,341 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197370499] [2021-06-05 07:57:50,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:50,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:50,396 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:50,397 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:50,397 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197370499] [2021-06-05 07:57:50,397 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197370499] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:50,397 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429065620] [2021-06-05 07:57:50,397 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:50,468 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 07:57:50,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:57:50,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-05 07:57:50,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:50,547 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:50,547 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429065620] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:50,547 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:50,547 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2021-06-05 07:57:50,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005473047] [2021-06-05 07:57:50,549 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 07:57:50,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:50,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 07:57:50,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-06-05 07:57:50,549 INFO L87 Difference]: Start difference. First operand 1313 states and 3578 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:50,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:50,689 INFO L93 Difference]: Finished difference Result 1931 states and 5017 transitions. [2021-06-05 07:57:50,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 07:57:50,689 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-06-05 07:57:50,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:50,692 INFO L225 Difference]: With dead ends: 1931 [2021-06-05 07:57:50,692 INFO L226 Difference]: Without dead ends: 1661 [2021-06-05 07:57:50,692 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 102.9ms TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2021-06-05 07:57:50,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1661 states. [2021-06-05 07:57:50,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1661 to 1388. [2021-06-05 07:57:50,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1388 states, 1387 states have (on average 2.741888968997837) internal successors, (3803), 1387 states have internal predecessors, (3803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:50,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 3803 transitions. [2021-06-05 07:57:50,711 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 3803 transitions. Word has length 55 [2021-06-05 07:57:50,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:50,711 INFO L482 AbstractCegarLoop]: Abstraction has 1388 states and 3803 transitions. [2021-06-05 07:57:50,711 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:50,711 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 3803 transitions. [2021-06-05 07:57:50,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-06-05 07:57:50,713 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:50,713 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:50,931 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-06-05 07:57:50,933 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:50,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:50,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1597456522, now seen corresponding path program 7 times [2021-06-05 07:57:50,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:50,934 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548177592] [2021-06-05 07:57:50,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:50,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:51,011 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:51,011 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:51,011 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548177592] [2021-06-05 07:57:51,011 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548177592] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:51,011 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662479399] [2021-06-05 07:57:51,011 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:51,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:51,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-05 07:57:51,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:51,155 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:51,155 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662479399] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:51,155 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:51,155 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-06-05 07:57:51,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872237326] [2021-06-05 07:57:51,155 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 07:57:51,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:51,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 07:57:51,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-06-05 07:57:51,156 INFO L87 Difference]: Start difference. First operand 1388 states and 3803 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:51,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:51,366 INFO L93 Difference]: Finished difference Result 2111 states and 5497 transitions. [2021-06-05 07:57:51,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 07:57:51,367 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-06-05 07:57:51,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:51,369 INFO L225 Difference]: With dead ends: 2111 [2021-06-05 07:57:51,370 INFO L226 Difference]: Without dead ends: 1841 [2021-06-05 07:57:51,370 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 173.3ms TimeCoverageRelationStatistics Valid=140, Invalid=412, Unknown=0, NotChecked=0, Total=552 [2021-06-05 07:57:51,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1841 states. [2021-06-05 07:57:51,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1841 to 1463. [2021-06-05 07:57:51,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1463 states, 1462 states have (on average 2.7688098495212037) internal successors, (4048), 1462 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:51,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1463 states to 1463 states and 4048 transitions. [2021-06-05 07:57:51,397 INFO L78 Accepts]: Start accepts. Automaton has 1463 states and 4048 transitions. Word has length 55 [2021-06-05 07:57:51,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:51,397 INFO L482 AbstractCegarLoop]: Abstraction has 1463 states and 4048 transitions. [2021-06-05 07:57:51,397 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:51,397 INFO L276 IsEmpty]: Start isEmpty. Operand 1463 states and 4048 transitions. [2021-06-05 07:57:51,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-06-05 07:57:51,401 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:51,401 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:51,620 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-06-05 07:57:51,623 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:51,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:51,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1664863172, now seen corresponding path program 8 times [2021-06-05 07:57:51,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:51,623 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282762201] [2021-06-05 07:57:51,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:51,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:51,678 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:51,678 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:51,678 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282762201] [2021-06-05 07:57:51,678 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282762201] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:51,678 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766954116] [2021-06-05 07:57:51,678 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:51,736 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:57:51,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:57:51,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 07:57:51,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:51,834 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:51,834 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766954116] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:51,834 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:51,834 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2021-06-05 07:57:51,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854733760] [2021-06-05 07:57:51,834 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 07:57:51,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:51,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 07:57:51,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-06-05 07:57:51,835 INFO L87 Difference]: Start difference. First operand 1463 states and 4048 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:52,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:52,046 INFO L93 Difference]: Finished difference Result 2858 states and 7631 transitions. [2021-06-05 07:57:52,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 07:57:52,046 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-06-05 07:57:52,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:52,050 INFO L225 Difference]: With dead ends: 2858 [2021-06-05 07:57:52,050 INFO L226 Difference]: Without dead ends: 2588 [2021-06-05 07:57:52,050 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 157.0ms TimeCoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2021-06-05 07:57:52,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2588 states. [2021-06-05 07:57:52,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2588 to 1643. [2021-06-05 07:57:52,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1643 states, 1642 states have (on average 2.805724725943971) internal successors, (4607), 1642 states have internal predecessors, (4607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:52,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1643 states to 1643 states and 4607 transitions. [2021-06-05 07:57:52,075 INFO L78 Accepts]: Start accepts. Automaton has 1643 states and 4607 transitions. Word has length 55 [2021-06-05 07:57:52,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:52,075 INFO L482 AbstractCegarLoop]: Abstraction has 1643 states and 4607 transitions. [2021-06-05 07:57:52,075 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:52,075 INFO L276 IsEmpty]: Start isEmpty. Operand 1643 states and 4607 transitions. [2021-06-05 07:57:52,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-06-05 07:57:52,076 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:52,076 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:52,293 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-06-05 07:57:52,293 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:52,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:52,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1687206422, now seen corresponding path program 9 times [2021-06-05 07:57:52,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:52,294 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461128902] [2021-06-05 07:57:52,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:52,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:52,352 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:52,352 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:52,352 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461128902] [2021-06-05 07:57:52,352 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461128902] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:52,352 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787140508] [2021-06-05 07:57:52,352 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:52,439 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 07:57:52,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:57:52,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 07:57:52,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:52,534 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:52,534 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787140508] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:52,534 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:52,534 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-06-05 07:57:52,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893533507] [2021-06-05 07:57:52,534 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 07:57:52,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:52,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 07:57:52,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-06-05 07:57:52,535 INFO L87 Difference]: Start difference. First operand 1643 states and 4607 transitions. Second operand has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:52,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:52,813 INFO L93 Difference]: Finished difference Result 2726 states and 7296 transitions. [2021-06-05 07:57:52,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-05 07:57:52,814 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-06-05 07:57:52,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:52,817 INFO L225 Difference]: With dead ends: 2726 [2021-06-05 07:57:52,817 INFO L226 Difference]: Without dead ends: 2151 [2021-06-05 07:57:52,817 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 229.6ms TimeCoverageRelationStatistics Valid=200, Invalid=612, Unknown=0, NotChecked=0, Total=812 [2021-06-05 07:57:52,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2151 states. [2021-06-05 07:57:52,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2151 to 1678. [2021-06-05 07:57:52,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1678 states, 1677 states have (on average 2.7924865831842576) internal successors, (4683), 1677 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:52,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1678 states to 1678 states and 4683 transitions. [2021-06-05 07:57:52,857 INFO L78 Accepts]: Start accepts. Automaton has 1678 states and 4683 transitions. Word has length 55 [2021-06-05 07:57:52,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:52,858 INFO L482 AbstractCegarLoop]: Abstraction has 1678 states and 4683 transitions. [2021-06-05 07:57:52,858 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:52,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1678 states and 4683 transitions. [2021-06-05 07:57:52,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-06-05 07:57:52,859 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:52,859 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:53,073 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-06-05 07:57:53,073 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:53,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:53,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1642632502, now seen corresponding path program 10 times [2021-06-05 07:57:53,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:53,073 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474906176] [2021-06-05 07:57:53,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:53,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:53,155 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:53,156 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:53,156 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474906176] [2021-06-05 07:57:53,156 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474906176] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:53,156 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487377954] [2021-06-05 07:57:53,156 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:53,212 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:57:53,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:57:53,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 13 conjunts are in the unsatisfiable core [2021-06-05 07:57:53,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:53,327 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:53,327 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487377954] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:53,327 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:53,327 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 15 [2021-06-05 07:57:53,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263146543] [2021-06-05 07:57:53,327 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 07:57:53,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:53,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 07:57:53,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-06-05 07:57:53,328 INFO L87 Difference]: Start difference. First operand 1678 states and 4683 transitions. Second operand has 15 states, 15 states have (on average 6.0) internal successors, (90), 15 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:53,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:53,527 INFO L93 Difference]: Finished difference Result 2468 states and 6583 transitions. [2021-06-05 07:57:53,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 07:57:53,527 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.0) internal successors, (90), 15 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-06-05 07:57:53,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:53,531 INFO L225 Difference]: With dead ends: 2468 [2021-06-05 07:57:53,531 INFO L226 Difference]: Without dead ends: 2134 [2021-06-05 07:57:53,531 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 184.9ms TimeCoverageRelationStatistics Valid=182, Invalid=520, Unknown=0, NotChecked=0, Total=702 [2021-06-05 07:57:53,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2134 states. [2021-06-05 07:57:53,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2134 to 1763. [2021-06-05 07:57:53,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1763 states, 1762 states have (on average 2.754256526674234) internal successors, (4853), 1762 states have internal predecessors, (4853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:53,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 4853 transitions. [2021-06-05 07:57:53,555 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 4853 transitions. Word has length 60 [2021-06-05 07:57:53,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:53,555 INFO L482 AbstractCegarLoop]: Abstraction has 1763 states and 4853 transitions. [2021-06-05 07:57:53,555 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 6.0) internal successors, (90), 15 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:53,555 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 4853 transitions. [2021-06-05 07:57:53,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-06-05 07:57:53,557 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:53,557 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:53,772 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:53,772 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:53,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:53,773 INFO L82 PathProgramCache]: Analyzing trace with hash -1005400838, now seen corresponding path program 11 times [2021-06-05 07:57:53,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:53,773 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439251558] [2021-06-05 07:57:53,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:53,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:53,852 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:53,852 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:53,852 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439251558] [2021-06-05 07:57:53,853 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439251558] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:53,853 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303487202] [2021-06-05 07:57:53,853 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:53,918 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 07:57:53,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:57:53,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 07:57:53,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:54,024 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:54,024 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303487202] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:54,024 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:54,024 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2021-06-05 07:57:54,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242755318] [2021-06-05 07:57:54,025 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 07:57:54,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:54,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 07:57:54,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-06-05 07:57:54,025 INFO L87 Difference]: Start difference. First operand 1763 states and 4853 transitions. Second operand has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:54,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:54,143 INFO L93 Difference]: Finished difference Result 2561 states and 6577 transitions. [2021-06-05 07:57:54,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 07:57:54,143 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-06-05 07:57:54,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:54,146 INFO L225 Difference]: With dead ends: 2561 [2021-06-05 07:57:54,147 INFO L226 Difference]: Without dead ends: 2291 [2021-06-05 07:57:54,147 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 111.9ms TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2021-06-05 07:57:54,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2291 states. [2021-06-05 07:57:54,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2291 to 1778. [2021-06-05 07:57:54,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1778 states, 1777 states have (on average 2.7478897017445134) internal successors, (4883), 1777 states have internal predecessors, (4883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:54,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1778 states to 1778 states and 4883 transitions. [2021-06-05 07:57:54,168 INFO L78 Accepts]: Start accepts. Automaton has 1778 states and 4883 transitions. Word has length 60 [2021-06-05 07:57:54,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:54,168 INFO L482 AbstractCegarLoop]: Abstraction has 1778 states and 4883 transitions. [2021-06-05 07:57:54,168 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:54,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states and 4883 transitions. [2021-06-05 07:57:54,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-06-05 07:57:54,170 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:54,170 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:54,386 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:54,387 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:54,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:54,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1024918474, now seen corresponding path program 12 times [2021-06-05 07:57:54,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:54,387 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974603830] [2021-06-05 07:57:54,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:54,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:54,467 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:54,467 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:54,467 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974603830] [2021-06-05 07:57:54,467 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974603830] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:54,467 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170474853] [2021-06-05 07:57:54,467 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:54,523 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 07:57:54,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:57:54,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 07:57:54,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:54,656 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:54,656 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170474853] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:54,656 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:54,656 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2021-06-05 07:57:54,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484221925] [2021-06-05 07:57:54,658 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 07:57:54,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:54,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 07:57:54,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-06-05 07:57:54,658 INFO L87 Difference]: Start difference. First operand 1778 states and 4883 transitions. Second operand has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:54,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:54,833 INFO L93 Difference]: Finished difference Result 2446 states and 6347 transitions. [2021-06-05 07:57:54,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 07:57:54,833 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-06-05 07:57:54,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:54,836 INFO L225 Difference]: With dead ends: 2446 [2021-06-05 07:57:54,836 INFO L226 Difference]: Without dead ends: 2176 [2021-06-05 07:57:54,836 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 160.9ms TimeCoverageRelationStatistics Valid=152, Invalid=448, Unknown=0, NotChecked=0, Total=600 [2021-06-05 07:57:54,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2176 states. [2021-06-05 07:57:54,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2176 to 1778. [2021-06-05 07:57:54,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1778 states, 1777 states have (on average 2.7478897017445134) internal successors, (4883), 1777 states have internal predecessors, (4883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:54,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1778 states to 1778 states and 4883 transitions. [2021-06-05 07:57:54,857 INFO L78 Accepts]: Start accepts. Automaton has 1778 states and 4883 transitions. Word has length 60 [2021-06-05 07:57:54,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:54,857 INFO L482 AbstractCegarLoop]: Abstraction has 1778 states and 4883 transitions. [2021-06-05 07:57:54,857 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:54,857 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states and 4883 transitions. [2021-06-05 07:57:54,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-06-05 07:57:54,860 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:54,860 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:55,076 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-06-05 07:57:55,077 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:55,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:55,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1639157944, now seen corresponding path program 13 times [2021-06-05 07:57:55,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:55,077 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789773550] [2021-06-05 07:57:55,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:55,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:55,141 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:55,141 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:55,141 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789773550] [2021-06-05 07:57:55,142 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789773550] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:55,142 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772717652] [2021-06-05 07:57:55,142 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:55,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:55,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 07:57:55,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:55,278 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:55,279 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772717652] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:55,279 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:55,279 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2021-06-05 07:57:55,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238300371] [2021-06-05 07:57:55,279 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 07:57:55,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:55,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 07:57:55,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-06-05 07:57:55,280 INFO L87 Difference]: Start difference. First operand 1778 states and 4883 transitions. Second operand has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:55,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:55,417 INFO L93 Difference]: Finished difference Result 2421 states and 6297 transitions. [2021-06-05 07:57:55,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 07:57:55,417 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-06-05 07:57:55,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:55,420 INFO L225 Difference]: With dead ends: 2421 [2021-06-05 07:57:55,420 INFO L226 Difference]: Without dead ends: 2151 [2021-06-05 07:57:55,421 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 123.3ms TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2021-06-05 07:57:55,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2151 states. [2021-06-05 07:57:55,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2151 to 1778. [2021-06-05 07:57:55,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1778 states, 1777 states have (on average 2.7478897017445134) internal successors, (4883), 1777 states have internal predecessors, (4883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:55,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1778 states to 1778 states and 4883 transitions. [2021-06-05 07:57:55,444 INFO L78 Accepts]: Start accepts. Automaton has 1778 states and 4883 transitions. Word has length 60 [2021-06-05 07:57:55,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:55,444 INFO L482 AbstractCegarLoop]: Abstraction has 1778 states and 4883 transitions. [2021-06-05 07:57:55,444 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:55,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states and 4883 transitions. [2021-06-05 07:57:55,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-06-05 07:57:55,446 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:55,446 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:55,663 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:55,663 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:55,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:55,663 INFO L82 PathProgramCache]: Analyzing trace with hash -76084344, now seen corresponding path program 14 times [2021-06-05 07:57:55,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:55,663 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769571699] [2021-06-05 07:57:55,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:55,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:55,729 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:55,729 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:55,729 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769571699] [2021-06-05 07:57:55,729 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769571699] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:55,729 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300911849] [2021-06-05 07:57:55,729 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:55,817 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:57:55,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:57:55,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 07:57:55,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:55,901 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:55,901 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300911849] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:55,901 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:55,901 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2021-06-05 07:57:55,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455216708] [2021-06-05 07:57:55,901 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 07:57:55,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:55,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 07:57:55,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-06-05 07:57:55,902 INFO L87 Difference]: Start difference. First operand 1778 states and 4883 transitions. Second operand has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:56,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:56,136 INFO L93 Difference]: Finished difference Result 2431 states and 6347 transitions. [2021-06-05 07:57:56,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 07:57:56,136 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-06-05 07:57:56,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:56,138 INFO L225 Difference]: With dead ends: 2431 [2021-06-05 07:57:56,138 INFO L226 Difference]: Without dead ends: 2161 [2021-06-05 07:57:56,138 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 207.2ms TimeCoverageRelationStatistics Valid=178, Invalid=524, Unknown=0, NotChecked=0, Total=702 [2021-06-05 07:57:56,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2161 states. [2021-06-05 07:57:56,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2161 to 1778. [2021-06-05 07:57:56,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1778 states, 1777 states have (on average 2.7507034327518287) internal successors, (4888), 1777 states have internal predecessors, (4888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:56,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1778 states to 1778 states and 4888 transitions. [2021-06-05 07:57:56,159 INFO L78 Accepts]: Start accepts. Automaton has 1778 states and 4888 transitions. Word has length 60 [2021-06-05 07:57:56,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:56,159 INFO L482 AbstractCegarLoop]: Abstraction has 1778 states and 4888 transitions. [2021-06-05 07:57:56,159 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:56,159 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states and 4888 transitions. [2021-06-05 07:57:56,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-06-05 07:57:56,161 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:56,161 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:56,380 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-06-05 07:57:56,380 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:56,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:56,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1108731946, now seen corresponding path program 15 times [2021-06-05 07:57:56,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:56,381 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462645249] [2021-06-05 07:57:56,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:56,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:56,435 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:56,435 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:56,435 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462645249] [2021-06-05 07:57:56,435 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462645249] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:56,435 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125217451] [2021-06-05 07:57:56,435 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:56,515 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 07:57:56,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:57:56,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 13 conjunts are in the unsatisfiable core [2021-06-05 07:57:56,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:56,588 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:56,588 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125217451] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:56,588 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:56,588 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2021-06-05 07:57:56,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90349803] [2021-06-05 07:57:56,589 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 07:57:56,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:56,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 07:57:56,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-06-05 07:57:56,589 INFO L87 Difference]: Start difference. First operand 1778 states and 4888 transitions. Second operand has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:56,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:56,787 INFO L93 Difference]: Finished difference Result 3198 states and 8521 transitions. [2021-06-05 07:57:56,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 07:57:56,788 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-06-05 07:57:56,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:56,790 INFO L225 Difference]: With dead ends: 3198 [2021-06-05 07:57:56,790 INFO L226 Difference]: Without dead ends: 2928 [2021-06-05 07:57:56,791 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 141.7ms TimeCoverageRelationStatistics Valid=164, Invalid=436, Unknown=0, NotChecked=0, Total=600 [2021-06-05 07:57:56,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2021-06-05 07:57:56,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 1958. [2021-06-05 07:57:56,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1958 states, 1957 states have (on average 2.783341849770056) internal successors, (5447), 1957 states have internal predecessors, (5447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:56,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1958 states to 1958 states and 5447 transitions. [2021-06-05 07:57:56,818 INFO L78 Accepts]: Start accepts. Automaton has 1958 states and 5447 transitions. Word has length 60 [2021-06-05 07:57:56,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:56,818 INFO L482 AbstractCegarLoop]: Abstraction has 1958 states and 5447 transitions. [2021-06-05 07:57:56,818 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:56,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1958 states and 5447 transitions. [2021-06-05 07:57:56,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-06-05 07:57:56,820 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:56,820 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:57,038 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-06-05 07:57:57,038 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:57,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:57,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1086388696, now seen corresponding path program 16 times [2021-06-05 07:57:57,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:57,039 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153681681] [2021-06-05 07:57:57,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:57,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:57,093 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:57,093 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:57,094 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153681681] [2021-06-05 07:57:57,094 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153681681] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:57,094 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748939342] [2021-06-05 07:57:57,094 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:57,232 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:57:57,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:57:57,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 07:57:57,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:57,389 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:57,390 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748939342] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:57,390 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:57,390 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2021-06-05 07:57:57,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508302427] [2021-06-05 07:57:57,391 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 07:57:57,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:57,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 07:57:57,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-06-05 07:57:57,391 INFO L87 Difference]: Start difference. First operand 1958 states and 5447 transitions. Second operand has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:57,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:57,725 INFO L93 Difference]: Finished difference Result 3021 states and 8021 transitions. [2021-06-05 07:57:57,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 07:57:57,725 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-06-05 07:57:57,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:57,728 INFO L225 Difference]: With dead ends: 3021 [2021-06-05 07:57:57,728 INFO L226 Difference]: Without dead ends: 2446 [2021-06-05 07:57:57,728 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 271.1ms TimeCoverageRelationStatistics Valid=252, Invalid=740, Unknown=0, NotChecked=0, Total=992 [2021-06-05 07:57:57,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2446 states. [2021-06-05 07:57:57,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2446 to 1603. [2021-06-05 07:57:57,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1603 states, 1602 states have (on average 2.7265917602996255) internal successors, (4368), 1602 states have internal predecessors, (4368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:57,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1603 states to 1603 states and 4368 transitions. [2021-06-05 07:57:57,784 INFO L78 Accepts]: Start accepts. Automaton has 1603 states and 4368 transitions. Word has length 60 [2021-06-05 07:57:57,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:57,784 INFO L482 AbstractCegarLoop]: Abstraction has 1603 states and 4368 transitions. [2021-06-05 07:57:57,784 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:57,784 INFO L276 IsEmpty]: Start isEmpty. Operand 1603 states and 4368 transitions. [2021-06-05 07:57:57,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-06-05 07:57:57,785 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:57,785 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:57,986 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-06-05 07:57:57,986 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:57,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:57,986 INFO L82 PathProgramCache]: Analyzing trace with hash -423019465, now seen corresponding path program 17 times [2021-06-05 07:57:57,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:57,987 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733070957] [2021-06-05 07:57:57,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:57,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:58,064 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:58,065 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:58,065 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733070957] [2021-06-05 07:57:58,065 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733070957] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:58,065 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389750514] [2021-06-05 07:57:58,065 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:58,143 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 07:57:58,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:57:58,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 13 conjunts are in the unsatisfiable core [2021-06-05 07:57:58,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:58,237 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:58,238 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389750514] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:58,238 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:58,238 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2021-06-05 07:57:58,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706986286] [2021-06-05 07:57:58,238 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 07:57:58,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:58,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 07:57:58,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-06-05 07:57:58,239 INFO L87 Difference]: Start difference. First operand 1603 states and 4368 transitions. Second operand has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:58,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:58,434 INFO L93 Difference]: Finished difference Result 2321 states and 6007 transitions. [2021-06-05 07:57:58,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 07:57:58,435 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-06-05 07:57:58,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:58,437 INFO L225 Difference]: With dead ends: 2321 [2021-06-05 07:57:58,437 INFO L226 Difference]: Without dead ends: 2051 [2021-06-05 07:57:58,437 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 177.7ms TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2021-06-05 07:57:58,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2051 states. [2021-06-05 07:57:58,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2051 to 1678. [2021-06-05 07:57:58,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1678 states, 1677 states have (on average 2.738819320214669) internal successors, (4593), 1677 states have internal predecessors, (4593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:58,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1678 states to 1678 states and 4593 transitions. [2021-06-05 07:57:58,460 INFO L78 Accepts]: Start accepts. Automaton has 1678 states and 4593 transitions. Word has length 65 [2021-06-05 07:57:58,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:58,460 INFO L482 AbstractCegarLoop]: Abstraction has 1678 states and 4593 transitions. [2021-06-05 07:57:58,460 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:58,460 INFO L276 IsEmpty]: Start isEmpty. Operand 1678 states and 4593 transitions. [2021-06-05 07:57:58,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-06-05 07:57:58,462 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:58,462 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:58,677 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-06-05 07:57:58,677 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:58,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:58,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1607299847, now seen corresponding path program 18 times [2021-06-05 07:57:58,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:58,677 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498695208] [2021-06-05 07:57:58,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:58,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:58,766 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:58,766 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:58,766 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498695208] [2021-06-05 07:57:58,767 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498695208] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:58,767 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603149980] [2021-06-05 07:57:58,767 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:58,821 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 07:57:58,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:57:58,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 13 conjunts are in the unsatisfiable core [2021-06-05 07:57:58,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:58,921 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:58,922 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603149980] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:58,922 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:58,922 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2021-06-05 07:57:58,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787085630] [2021-06-05 07:57:58,922 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 07:57:58,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:58,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 07:57:58,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-06-05 07:57:58,922 INFO L87 Difference]: Start difference. First operand 1678 states and 4593 transitions. Second operand has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:59,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:59,119 INFO L93 Difference]: Finished difference Result 2491 states and 6422 transitions. [2021-06-05 07:57:59,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 07:57:59,119 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-06-05 07:57:59,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:59,121 INFO L225 Difference]: With dead ends: 2491 [2021-06-05 07:57:59,121 INFO L226 Difference]: Without dead ends: 2221 [2021-06-05 07:57:59,122 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 194.8ms TimeCoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2021-06-05 07:57:59,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2221 states. [2021-06-05 07:57:59,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2221 to 1753. [2021-06-05 07:57:59,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1753 states, 1752 states have (on average 2.75) internal successors, (4818), 1752 states have internal predecessors, (4818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:59,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1753 states to 1753 states and 4818 transitions. [2021-06-05 07:57:59,145 INFO L78 Accepts]: Start accepts. Automaton has 1753 states and 4818 transitions. Word has length 65 [2021-06-05 07:57:59,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:59,145 INFO L482 AbstractCegarLoop]: Abstraction has 1753 states and 4818 transitions. [2021-06-05 07:57:59,145 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:59,145 INFO L276 IsEmpty]: Start isEmpty. Operand 1753 states and 4818 transitions. [2021-06-05 07:57:59,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-06-05 07:57:59,146 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:59,146 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:57:59,361 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-06-05 07:57:59,361 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:57:59,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:57:59,361 INFO L82 PathProgramCache]: Analyzing trace with hash -2073427979, now seen corresponding path program 19 times [2021-06-05 07:57:59,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:57:59,362 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879396161] [2021-06-05 07:57:59,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:57:59,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:59,437 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:59,437 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:57:59,437 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879396161] [2021-06-05 07:57:59,437 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879396161] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:59,437 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730756388] [2021-06-05 07:57:59,437 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:57:59,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:57:59,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 13 conjunts are in the unsatisfiable core [2021-06-05 07:57:59,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:57:59,573 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:57:59,573 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730756388] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:57:59,573 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:57:59,573 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2021-06-05 07:57:59,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899959428] [2021-06-05 07:57:59,574 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 07:57:59,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:57:59,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 07:57:59,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-06-05 07:57:59,574 INFO L87 Difference]: Start difference. First operand 1753 states and 4818 transitions. Second operand has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:59,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:57:59,789 INFO L93 Difference]: Finished difference Result 2566 states and 6677 transitions. [2021-06-05 07:57:59,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-05 07:57:59,789 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-06-05 07:57:59,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:57:59,791 INFO L225 Difference]: With dead ends: 2566 [2021-06-05 07:57:59,791 INFO L226 Difference]: Without dead ends: 2296 [2021-06-05 07:57:59,791 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 181.6ms TimeCoverageRelationStatistics Valid=195, Invalid=561, Unknown=0, NotChecked=0, Total=756 [2021-06-05 07:57:59,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2296 states. [2021-06-05 07:57:59,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2296 to 1828. [2021-06-05 07:57:59,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1828 states, 1827 states have (on average 2.768472906403941) internal successors, (5058), 1827 states have internal predecessors, (5058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:59,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1828 states to 1828 states and 5058 transitions. [2021-06-05 07:57:59,813 INFO L78 Accepts]: Start accepts. Automaton has 1828 states and 5058 transitions. Word has length 65 [2021-06-05 07:57:59,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:57:59,813 INFO L482 AbstractCegarLoop]: Abstraction has 1828 states and 5058 transitions. [2021-06-05 07:57:59,813 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:57:59,813 INFO L276 IsEmpty]: Start isEmpty. Operand 1828 states and 5058 transitions. [2021-06-05 07:57:59,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-06-05 07:57:59,815 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:57:59,815 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:00,031 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:00,031 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:00,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:00,031 INFO L82 PathProgramCache]: Analyzing trace with hash 506297029, now seen corresponding path program 20 times [2021-06-05 07:58:00,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:00,031 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575573608] [2021-06-05 07:58:00,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:00,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:00,105 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:00,105 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:00,105 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575573608] [2021-06-05 07:58:00,105 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575573608] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:00,105 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776879072] [2021-06-05 07:58:00,105 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:00,166 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:58:00,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:00,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 13 conjunts are in the unsatisfiable core [2021-06-05 07:58:00,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:00,261 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:00,261 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776879072] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:00,262 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:00,262 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2021-06-05 07:58:00,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985600437] [2021-06-05 07:58:00,262 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 07:58:00,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:00,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 07:58:00,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-06-05 07:58:00,262 INFO L87 Difference]: Start difference. First operand 1828 states and 5058 transitions. Second operand has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:00,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:00,553 INFO L93 Difference]: Finished difference Result 3144 states and 8303 transitions. [2021-06-05 07:58:00,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 07:58:00,554 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-06-05 07:58:00,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:00,556 INFO L225 Difference]: With dead ends: 3144 [2021-06-05 07:58:00,556 INFO L226 Difference]: Without dead ends: 2521 [2021-06-05 07:58:00,557 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 241.7ms TimeCoverageRelationStatistics Valid=241, Invalid=751, Unknown=0, NotChecked=0, Total=992 [2021-06-05 07:58:00,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2521 states. [2021-06-05 07:58:00,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2521 to 1903. [2021-06-05 07:58:00,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1903 states, 1902 states have (on average 2.780231335436383) internal successors, (5288), 1902 states have internal predecessors, (5288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:00,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1903 states to 1903 states and 5288 transitions. [2021-06-05 07:58:00,581 INFO L78 Accepts]: Start accepts. Automaton has 1903 states and 5288 transitions. Word has length 65 [2021-06-05 07:58:00,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:00,582 INFO L482 AbstractCegarLoop]: Abstraction has 1903 states and 5288 transitions. [2021-06-05 07:58:00,582 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:00,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1903 states and 5288 transitions. [2021-06-05 07:58:00,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-06-05 07:58:00,584 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:00,584 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:00,796 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-06-05 07:58:00,797 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:00,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:00,797 INFO L82 PathProgramCache]: Analyzing trace with hash -526350573, now seen corresponding path program 21 times [2021-06-05 07:58:00,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:00,797 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569353975] [2021-06-05 07:58:00,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:00,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:00,854 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:00,855 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:00,855 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569353975] [2021-06-05 07:58:00,855 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569353975] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:00,855 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305242631] [2021-06-05 07:58:00,855 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:00,905 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 07:58:00,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:00,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 07:58:00,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:00,998 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:00,998 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305242631] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:00,998 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:00,998 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2021-06-05 07:58:00,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947751565] [2021-06-05 07:58:00,999 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 07:58:00,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:00,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 07:58:00,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-06-05 07:58:00,999 INFO L87 Difference]: Start difference. First operand 1903 states and 5288 transitions. Second operand has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:01,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:01,209 INFO L93 Difference]: Finished difference Result 3348 states and 8971 transitions. [2021-06-05 07:58:01,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-05 07:58:01,210 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-06-05 07:58:01,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:01,212 INFO L225 Difference]: With dead ends: 3348 [2021-06-05 07:58:01,212 INFO L226 Difference]: Without dead ends: 3078 [2021-06-05 07:58:01,213 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 176.8ms TimeCoverageRelationStatistics Valid=243, Invalid=627, Unknown=0, NotChecked=0, Total=870 [2021-06-05 07:58:01,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3078 states. [2021-06-05 07:58:01,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3078 to 2083. [2021-06-05 07:58:01,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2083 states, 2082 states have (on average 2.80835734870317) internal successors, (5847), 2082 states have internal predecessors, (5847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:01,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2083 states to 2083 states and 5847 transitions. [2021-06-05 07:58:01,239 INFO L78 Accepts]: Start accepts. Automaton has 2083 states and 5847 transitions. Word has length 65 [2021-06-05 07:58:01,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:01,239 INFO L482 AbstractCegarLoop]: Abstraction has 2083 states and 5847 transitions. [2021-06-05 07:58:01,239 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:01,239 INFO L276 IsEmpty]: Start isEmpty. Operand 2083 states and 5847 transitions. [2021-06-05 07:58:01,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-06-05 07:58:01,241 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:01,241 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:01,451 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:01,451 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:01,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:01,451 INFO L82 PathProgramCache]: Analyzing trace with hash -504007323, now seen corresponding path program 22 times [2021-06-05 07:58:01,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:01,451 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172481451] [2021-06-05 07:58:01,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:01,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:01,518 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:01,518 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:01,518 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172481451] [2021-06-05 07:58:01,518 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172481451] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:01,518 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915342736] [2021-06-05 07:58:01,518 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:01,586 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:58:01,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:01,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 13 conjunts are in the unsatisfiable core [2021-06-05 07:58:01,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:01,688 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:01,689 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915342736] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:01,689 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:01,689 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2021-06-05 07:58:01,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833709347] [2021-06-05 07:58:01,689 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 07:58:01,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:01,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 07:58:01,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-06-05 07:58:01,689 INFO L87 Difference]: Start difference. First operand 2083 states and 5847 transitions. Second operand has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:02,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:02,010 INFO L93 Difference]: Finished difference Result 3216 states and 8636 transitions. [2021-06-05 07:58:02,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 07:58:02,011 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-06-05 07:58:02,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:02,013 INFO L225 Difference]: With dead ends: 3216 [2021-06-05 07:58:02,013 INFO L226 Difference]: Without dead ends: 2641 [2021-06-05 07:58:02,014 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 276.6ms TimeCoverageRelationStatistics Valid=300, Invalid=890, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 07:58:02,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2641 states. [2021-06-05 07:58:02,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2641 to 1524. [2021-06-05 07:58:02,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1524 states, 1523 states have (on average 2.7288246881155613) internal successors, (4156), 1523 states have internal predecessors, (4156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:02,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1524 states to 1524 states and 4156 transitions. [2021-06-05 07:58:02,033 INFO L78 Accepts]: Start accepts. Automaton has 1524 states and 4156 transitions. Word has length 65 [2021-06-05 07:58:02,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:02,033 INFO L482 AbstractCegarLoop]: Abstraction has 1524 states and 4156 transitions. [2021-06-05 07:58:02,033 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:02,033 INFO L276 IsEmpty]: Start isEmpty. Operand 1524 states and 4156 transitions. [2021-06-05 07:58:02,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-06-05 07:58:02,035 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:02,035 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:02,248 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-06-05 07:58:02,249 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:02,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:02,249 INFO L82 PathProgramCache]: Analyzing trace with hash 2053970119, now seen corresponding path program 23 times [2021-06-05 07:58:02,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:02,249 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817745566] [2021-06-05 07:58:02,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:02,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:02,344 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:02,344 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:02,344 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817745566] [2021-06-05 07:58:02,344 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817745566] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:02,344 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491754233] [2021-06-05 07:58:02,344 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:02,394 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-05 07:58:02,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:02,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 15 conjunts are in the unsatisfiable core [2021-06-05 07:58:02,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:02,508 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:02,509 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491754233] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:02,509 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:02,509 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 17 [2021-06-05 07:58:02,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114074346] [2021-06-05 07:58:02,509 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:58:02,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:02,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:58:02,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:58:02,509 INFO L87 Difference]: Start difference. First operand 1524 states and 4156 transitions. Second operand has 17 states, 17 states have (on average 5.882352941176471) internal successors, (100), 17 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:02,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:02,704 INFO L93 Difference]: Finished difference Result 2364 states and 6156 transitions. [2021-06-05 07:58:02,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 07:58:02,704 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.882352941176471) internal successors, (100), 17 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-06-05 07:58:02,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:02,706 INFO L225 Difference]: With dead ends: 2364 [2021-06-05 07:58:02,706 INFO L226 Difference]: Without dead ends: 2030 [2021-06-05 07:58:02,707 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 205.4ms TimeCoverageRelationStatistics Valid=240, Invalid=690, Unknown=0, NotChecked=0, Total=930 [2021-06-05 07:58:02,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2030 states. [2021-06-05 07:58:02,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2030 to 1609. [2021-06-05 07:58:02,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1609 states, 1608 states have (on average 2.6902985074626864) internal successors, (4326), 1608 states have internal predecessors, (4326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:02,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1609 states to 1609 states and 4326 transitions. [2021-06-05 07:58:02,726 INFO L78 Accepts]: Start accepts. Automaton has 1609 states and 4326 transitions. Word has length 70 [2021-06-05 07:58:02,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:02,726 INFO L482 AbstractCegarLoop]: Abstraction has 1609 states and 4326 transitions. [2021-06-05 07:58:02,726 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 5.882352941176471) internal successors, (100), 17 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:02,726 INFO L276 IsEmpty]: Start isEmpty. Operand 1609 states and 4326 transitions. [2021-06-05 07:58:02,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-06-05 07:58:02,727 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:02,727 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:02,940 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:02,941 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:02,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:02,941 INFO L82 PathProgramCache]: Analyzing trace with hash -778605685, now seen corresponding path program 24 times [2021-06-05 07:58:02,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:02,941 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799814374] [2021-06-05 07:58:02,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:02,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:03,018 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:03,018 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:03,018 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799814374] [2021-06-05 07:58:03,018 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799814374] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:03,018 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012637820] [2021-06-05 07:58:03,018 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:03,077 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-06-05 07:58:03,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:03,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 07:58:03,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:03,168 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:03,169 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012637820] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:03,169 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:03,169 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2021-06-05 07:58:03,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800672961] [2021-06-05 07:58:03,169 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 07:58:03,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:03,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 07:58:03,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-06-05 07:58:03,169 INFO L87 Difference]: Start difference. First operand 1609 states and 4326 transitions. Second operand has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:03,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:03,332 INFO L93 Difference]: Finished difference Result 2686 states and 6737 transitions. [2021-06-05 07:58:03,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 07:58:03,332 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-06-05 07:58:03,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:03,334 INFO L225 Difference]: With dead ends: 2686 [2021-06-05 07:58:03,334 INFO L226 Difference]: Without dead ends: 2416 [2021-06-05 07:58:03,334 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 167.2ms TimeCoverageRelationStatistics Valid=158, Invalid=442, Unknown=0, NotChecked=0, Total=600 [2021-06-05 07:58:03,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2416 states. [2021-06-05 07:58:03,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2416 to 1753. [2021-06-05 07:58:03,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1753 states, 1752 states have (on average 2.7071917808219177) internal successors, (4743), 1752 states have internal predecessors, (4743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:03,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1753 states to 1753 states and 4743 transitions. [2021-06-05 07:58:03,354 INFO L78 Accepts]: Start accepts. Automaton has 1753 states and 4743 transitions. Word has length 70 [2021-06-05 07:58:03,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:03,354 INFO L482 AbstractCegarLoop]: Abstraction has 1753 states and 4743 transitions. [2021-06-05 07:58:03,354 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:03,354 INFO L276 IsEmpty]: Start isEmpty. Operand 1753 states and 4743 transitions. [2021-06-05 07:58:03,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-06-05 07:58:03,356 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:03,356 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:03,573 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-06-05 07:58:03,573 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:03,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:03,573 INFO L82 PathProgramCache]: Analyzing trace with hash 220290651, now seen corresponding path program 25 times [2021-06-05 07:58:03,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:03,573 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978919086] [2021-06-05 07:58:03,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:03,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:03,659 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:03,659 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:03,659 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978919086] [2021-06-05 07:58:03,659 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978919086] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:03,659 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586830174] [2021-06-05 07:58:03,659 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:03,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:03,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 07:58:03,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:03,812 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:03,812 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586830174] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:03,812 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:03,812 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-06-05 07:58:03,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102865797] [2021-06-05 07:58:03,813 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 07:58:03,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:03,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 07:58:03,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-06-05 07:58:03,813 INFO L87 Difference]: Start difference. First operand 1753 states and 4743 transitions. Second operand has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:04,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:04,017 INFO L93 Difference]: Finished difference Result 2646 states and 6732 transitions. [2021-06-05 07:58:04,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 07:58:04,017 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-06-05 07:58:04,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:04,019 INFO L225 Difference]: With dead ends: 2646 [2021-06-05 07:58:04,019 INFO L226 Difference]: Without dead ends: 2376 [2021-06-05 07:58:04,020 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 205.4ms TimeCoverageRelationStatistics Valid=203, Invalid=609, Unknown=0, NotChecked=0, Total=812 [2021-06-05 07:58:04,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2376 states. [2021-06-05 07:58:04,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2376 to 1828. [2021-06-05 07:58:04,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1828 states, 1827 states have (on average 2.7192118226600983) internal successors, (4968), 1827 states have internal predecessors, (4968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:04,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1828 states to 1828 states and 4968 transitions. [2021-06-05 07:58:04,039 INFO L78 Accepts]: Start accepts. Automaton has 1828 states and 4968 transitions. Word has length 70 [2021-06-05 07:58:04,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:04,040 INFO L482 AbstractCegarLoop]: Abstraction has 1828 states and 4968 transitions. [2021-06-05 07:58:04,040 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:04,040 INFO L276 IsEmpty]: Start isEmpty. Operand 1828 states and 4968 transitions. [2021-06-05 07:58:04,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-06-05 07:58:04,041 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:04,041 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:04,255 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:04,255 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:04,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:04,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1659037239, now seen corresponding path program 26 times [2021-06-05 07:58:04,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:04,256 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651130389] [2021-06-05 07:58:04,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:04,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:04,336 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:04,336 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:04,336 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651130389] [2021-06-05 07:58:04,336 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651130389] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:04,336 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253017618] [2021-06-05 07:58:04,336 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:04,399 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:58:04,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:04,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 07:58:04,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:04,494 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:04,494 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253017618] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:04,494 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:04,494 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2021-06-05 07:58:04,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140291053] [2021-06-05 07:58:04,495 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 07:58:04,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:04,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 07:58:04,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-06-05 07:58:04,496 INFO L87 Difference]: Start difference. First operand 1828 states and 4968 transitions. Second operand has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:04,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:04,663 INFO L93 Difference]: Finished difference Result 2696 states and 6907 transitions. [2021-06-05 07:58:04,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 07:58:04,663 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-06-05 07:58:04,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:04,665 INFO L225 Difference]: With dead ends: 2696 [2021-06-05 07:58:04,666 INFO L226 Difference]: Without dead ends: 2426 [2021-06-05 07:58:04,666 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 158.9ms TimeCoverageRelationStatistics Valid=174, Invalid=528, Unknown=0, NotChecked=0, Total=702 [2021-06-05 07:58:04,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2426 states. [2021-06-05 07:58:04,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2426 to 1903. [2021-06-05 07:58:04,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1903 states, 1902 states have (on average 2.730283911671924) internal successors, (5193), 1902 states have internal predecessors, (5193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:04,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1903 states to 1903 states and 5193 transitions. [2021-06-05 07:58:04,686 INFO L78 Accepts]: Start accepts. Automaton has 1903 states and 5193 transitions. Word has length 70 [2021-06-05 07:58:04,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:04,686 INFO L482 AbstractCegarLoop]: Abstraction has 1903 states and 5193 transitions. [2021-06-05 07:58:04,686 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:04,686 INFO L276 IsEmpty]: Start isEmpty. Operand 1903 states and 5193 transitions. [2021-06-05 07:58:04,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-06-05 07:58:04,688 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:04,688 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:04,904 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-06-05 07:58:04,904 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:04,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:04,905 INFO L82 PathProgramCache]: Analyzing trace with hash 371282073, now seen corresponding path program 27 times [2021-06-05 07:58:04,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:04,905 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499859899] [2021-06-05 07:58:04,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:04,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:04,995 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:04,995 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:04,995 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499859899] [2021-06-05 07:58:04,995 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499859899] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:04,995 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789419286] [2021-06-05 07:58:04,995 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:05,067 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-05 07:58:05,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:05,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 19 conjunts are in the unsatisfiable core [2021-06-05 07:58:05,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:05,162 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:05,162 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789419286] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:05,162 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:05,163 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-06-05 07:58:05,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793798057] [2021-06-05 07:58:05,163 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 07:58:05,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:05,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 07:58:05,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-06-05 07:58:05,163 INFO L87 Difference]: Start difference. First operand 1903 states and 5193 transitions. Second operand has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:05,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:05,386 INFO L93 Difference]: Finished difference Result 2721 states and 7032 transitions. [2021-06-05 07:58:05,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 07:58:05,387 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-06-05 07:58:05,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:05,389 INFO L225 Difference]: With dead ends: 2721 [2021-06-05 07:58:05,389 INFO L226 Difference]: Without dead ends: 2451 [2021-06-05 07:58:05,389 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 208.7ms TimeCoverageRelationStatistics Valid=189, Invalid=623, Unknown=0, NotChecked=0, Total=812 [2021-06-05 07:58:05,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2451 states. [2021-06-05 07:58:05,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2451 to 1978. [2021-06-05 07:58:05,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1978 states, 1977 states have (on average 2.74051593323217) internal successors, (5418), 1977 states have internal predecessors, (5418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:05,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1978 states to 1978 states and 5418 transitions. [2021-06-05 07:58:05,413 INFO L78 Accepts]: Start accepts. Automaton has 1978 states and 5418 transitions. Word has length 70 [2021-06-05 07:58:05,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:05,413 INFO L482 AbstractCegarLoop]: Abstraction has 1978 states and 5418 transitions. [2021-06-05 07:58:05,413 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:05,413 INFO L276 IsEmpty]: Start isEmpty. Operand 1978 states and 5418 transitions. [2021-06-05 07:58:05,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-06-05 07:58:05,425 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:05,425 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:05,645 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:05,645 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:05,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:05,645 INFO L82 PathProgramCache]: Analyzing trace with hash 985521543, now seen corresponding path program 28 times [2021-06-05 07:58:05,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:05,645 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701546939] [2021-06-05 07:58:05,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:05,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:05,742 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:05,742 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:05,742 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701546939] [2021-06-05 07:58:05,742 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701546939] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:05,742 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542173047] [2021-06-05 07:58:05,742 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:05,791 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:58:05,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:05,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 07:58:05,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:05,891 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:05,891 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542173047] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:05,891 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:05,891 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2021-06-05 07:58:05,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874860065] [2021-06-05 07:58:05,892 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 07:58:05,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:05,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 07:58:05,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-06-05 07:58:05,894 INFO L87 Difference]: Start difference. First operand 1978 states and 5418 transitions. Second operand has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:06,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:06,102 INFO L93 Difference]: Finished difference Result 2791 states and 7277 transitions. [2021-06-05 07:58:06,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-05 07:58:06,103 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-06-05 07:58:06,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:06,105 INFO L225 Difference]: With dead ends: 2791 [2021-06-05 07:58:06,105 INFO L226 Difference]: Without dead ends: 2521 [2021-06-05 07:58:06,105 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 179.4ms TimeCoverageRelationStatistics Valid=206, Invalid=606, Unknown=0, NotChecked=0, Total=812 [2021-06-05 07:58:06,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2521 states. [2021-06-05 07:58:06,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2521 to 2053. [2021-06-05 07:58:06,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2053 states, 2052 states have (on average 2.757309941520468) internal successors, (5658), 2052 states have internal predecessors, (5658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:06,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2053 states to 2053 states and 5658 transitions. [2021-06-05 07:58:06,126 INFO L78 Accepts]: Start accepts. Automaton has 2053 states and 5658 transitions. Word has length 70 [2021-06-05 07:58:06,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:06,126 INFO L482 AbstractCegarLoop]: Abstraction has 2053 states and 5658 transitions. [2021-06-05 07:58:06,126 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:06,126 INFO L276 IsEmpty]: Start isEmpty. Operand 2053 states and 5658 transitions. [2021-06-05 07:58:06,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-06-05 07:58:06,128 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:06,128 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:06,328 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-06-05 07:58:06,329 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:06,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:06,329 INFO L82 PathProgramCache]: Analyzing trace with hash -729720745, now seen corresponding path program 29 times [2021-06-05 07:58:06,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:06,329 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899882846] [2021-06-05 07:58:06,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:06,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:06,399 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:06,400 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:06,400 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899882846] [2021-06-05 07:58:06,400 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899882846] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:06,400 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614961857] [2021-06-05 07:58:06,400 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:06,457 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-05 07:58:06,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:06,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 07:58:06,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:06,565 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:06,565 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614961857] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:06,565 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:06,565 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-06-05 07:58:06,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197080182] [2021-06-05 07:58:06,566 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 07:58:06,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:06,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 07:58:06,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-06-05 07:58:06,566 INFO L87 Difference]: Start difference. First operand 2053 states and 5658 transitions. Second operand has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:06,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:06,920 INFO L93 Difference]: Finished difference Result 3369 states and 8903 transitions. [2021-06-05 07:58:06,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 07:58:06,920 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-06-05 07:58:06,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:06,923 INFO L225 Difference]: With dead ends: 3369 [2021-06-05 07:58:06,923 INFO L226 Difference]: Without dead ends: 2746 [2021-06-05 07:58:06,923 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 315.9ms TimeCoverageRelationStatistics Valid=290, Invalid=900, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 07:58:06,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2746 states. [2021-06-05 07:58:06,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2746 to 2128. [2021-06-05 07:58:06,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2128 states, 2127 states have (on average 2.768218147625764) internal successors, (5888), 2127 states have internal predecessors, (5888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:06,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2128 states to 2128 states and 5888 transitions. [2021-06-05 07:58:06,946 INFO L78 Accepts]: Start accepts. Automaton has 2128 states and 5888 transitions. Word has length 70 [2021-06-05 07:58:06,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:06,947 INFO L482 AbstractCegarLoop]: Abstraction has 2128 states and 5888 transitions. [2021-06-05 07:58:06,947 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:06,947 INFO L276 IsEmpty]: Start isEmpty. Operand 2128 states and 5888 transitions. [2021-06-05 07:58:06,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-06-05 07:58:06,949 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:06,949 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:07,161 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-06-05 07:58:07,161 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:07,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:07,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1762368347, now seen corresponding path program 30 times [2021-06-05 07:58:07,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:07,162 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139518216] [2021-06-05 07:58:07,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:07,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:07,228 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:07,228 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:07,228 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139518216] [2021-06-05 07:58:07,228 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139518216] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:07,228 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60642227] [2021-06-05 07:58:07,228 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:07,308 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-06-05 07:58:07,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:07,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 15 conjunts are in the unsatisfiable core [2021-06-05 07:58:07,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:07,395 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:07,395 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60642227] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:07,395 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:07,395 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2021-06-05 07:58:07,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260397521] [2021-06-05 07:58:07,395 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 07:58:07,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:07,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 07:58:07,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-06-05 07:58:07,396 INFO L87 Difference]: Start difference. First operand 2128 states and 5888 transitions. Second operand has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:07,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:07,624 INFO L93 Difference]: Finished difference Result 3598 states and 9621 transitions. [2021-06-05 07:58:07,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-05 07:58:07,624 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-06-05 07:58:07,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:07,628 INFO L225 Difference]: With dead ends: 3598 [2021-06-05 07:58:07,628 INFO L226 Difference]: Without dead ends: 3328 [2021-06-05 07:58:07,628 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 190.4ms TimeCoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2021-06-05 07:58:07,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3328 states. [2021-06-05 07:58:07,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3328 to 2308. [2021-06-05 07:58:07,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2308 states, 2307 states have (on average 2.7945383615084527) internal successors, (6447), 2307 states have internal predecessors, (6447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:07,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2308 states to 2308 states and 6447 transitions. [2021-06-05 07:58:07,654 INFO L78 Accepts]: Start accepts. Automaton has 2308 states and 6447 transitions. Word has length 70 [2021-06-05 07:58:07,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:07,654 INFO L482 AbstractCegarLoop]: Abstraction has 2308 states and 6447 transitions. [2021-06-05 07:58:07,654 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:07,654 INFO L276 IsEmpty]: Start isEmpty. Operand 2308 states and 6447 transitions. [2021-06-05 07:58:07,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-06-05 07:58:07,656 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:07,656 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:07,871 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-06-05 07:58:07,872 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:07,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:07,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1740025097, now seen corresponding path program 31 times [2021-06-05 07:58:07,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:07,872 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531332052] [2021-06-05 07:58:07,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:07,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:07,937 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:07,937 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:07,937 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531332052] [2021-06-05 07:58:07,937 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531332052] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:07,938 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478186539] [2021-06-05 07:58:07,938 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:07,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:07,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 07:58:07,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:08,112 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:08,112 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478186539] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:08,112 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:08,113 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-06-05 07:58:08,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374687748] [2021-06-05 07:58:08,113 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 07:58:08,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:08,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 07:58:08,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-06-05 07:58:08,113 INFO L87 Difference]: Start difference. First operand 2308 states and 6447 transitions. Second operand has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:08,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:08,507 INFO L93 Difference]: Finished difference Result 3421 states and 9121 transitions. [2021-06-05 07:58:08,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 07:58:08,507 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-06-05 07:58:08,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:08,510 INFO L225 Difference]: With dead ends: 3421 [2021-06-05 07:58:08,510 INFO L226 Difference]: Without dead ends: 2846 [2021-06-05 07:58:08,510 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 336.4ms TimeCoverageRelationStatistics Valid=357, Invalid=1049, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 07:58:08,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2846 states. [2021-06-05 07:58:08,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2846 to 1803. [2021-06-05 07:58:08,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1803 states, 1802 states have (on average 2.7291897891231964) internal successors, (4918), 1802 states have internal predecessors, (4918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:08,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1803 states to 1803 states and 4918 transitions. [2021-06-05 07:58:08,534 INFO L78 Accepts]: Start accepts. Automaton has 1803 states and 4918 transitions. Word has length 70 [2021-06-05 07:58:08,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:08,534 INFO L482 AbstractCegarLoop]: Abstraction has 1803 states and 4918 transitions. [2021-06-05 07:58:08,534 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:08,534 INFO L276 IsEmpty]: Start isEmpty. Operand 1803 states and 4918 transitions. [2021-06-05 07:58:08,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-06-05 07:58:08,536 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:08,536 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:08,736 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-06-05 07:58:08,736 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:08,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:08,737 INFO L82 PathProgramCache]: Analyzing trace with hash 751678088, now seen corresponding path program 32 times [2021-06-05 07:58:08,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:08,737 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10854869] [2021-06-05 07:58:08,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:08,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:08,831 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:08,831 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:08,831 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10854869] [2021-06-05 07:58:08,832 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10854869] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:08,832 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517436414] [2021-06-05 07:58:08,832 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:08,888 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:58:08,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:08,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 15 conjunts are in the unsatisfiable core [2021-06-05 07:58:08,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:09,004 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:09,004 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517436414] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:09,004 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:09,004 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2021-06-05 07:58:09,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064542198] [2021-06-05 07:58:09,005 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 07:58:09,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:09,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 07:58:09,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-06-05 07:58:09,005 INFO L87 Difference]: Start difference. First operand 1803 states and 4918 transitions. Second operand has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:09,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:09,212 INFO L93 Difference]: Finished difference Result 2621 states and 6757 transitions. [2021-06-05 07:58:09,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 07:58:09,213 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-06-05 07:58:09,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:09,215 INFO L225 Difference]: With dead ends: 2621 [2021-06-05 07:58:09,215 INFO L226 Difference]: Without dead ends: 2351 [2021-06-05 07:58:09,215 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 190.4ms TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2021-06-05 07:58:09,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2351 states. [2021-06-05 07:58:09,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2351 to 1878. [2021-06-05 07:58:09,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1878 states, 1877 states have (on average 2.7400106553010124) internal successors, (5143), 1877 states have internal predecessors, (5143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:09,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1878 states to 1878 states and 5143 transitions. [2021-06-05 07:58:09,236 INFO L78 Accepts]: Start accepts. Automaton has 1878 states and 5143 transitions. Word has length 75 [2021-06-05 07:58:09,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:09,237 INFO L482 AbstractCegarLoop]: Abstraction has 1878 states and 5143 transitions. [2021-06-05 07:58:09,237 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:09,237 INFO L276 IsEmpty]: Start isEmpty. Operand 1878 states and 5143 transitions. [2021-06-05 07:58:09,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-06-05 07:58:09,238 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:09,238 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:09,454 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:09,455 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:09,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:09,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1750574424, now seen corresponding path program 33 times [2021-06-05 07:58:09,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:09,455 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682156616] [2021-06-05 07:58:09,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:09,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:09,543 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:09,544 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:09,544 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682156616] [2021-06-05 07:58:09,544 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682156616] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:09,544 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061805637] [2021-06-05 07:58:09,544 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:09,601 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-05 07:58:09,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:09,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 15 conjunts are in the unsatisfiable core [2021-06-05 07:58:09,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:09,699 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:09,700 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061805637] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:09,700 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:09,700 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2021-06-05 07:58:09,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113817776] [2021-06-05 07:58:09,700 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 07:58:09,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:09,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 07:58:09,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-06-05 07:58:09,700 INFO L87 Difference]: Start difference. First operand 1878 states and 5143 transitions. Second operand has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:09,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:09,927 INFO L93 Difference]: Finished difference Result 2841 states and 7272 transitions. [2021-06-05 07:58:09,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 07:58:09,928 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-06-05 07:58:09,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:09,930 INFO L225 Difference]: With dead ends: 2841 [2021-06-05 07:58:09,930 INFO L226 Difference]: Without dead ends: 2571 [2021-06-05 07:58:09,930 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 223.6ms TimeCoverageRelationStatistics Valid=221, Invalid=709, Unknown=0, NotChecked=0, Total=930 [2021-06-05 07:58:09,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2571 states. [2021-06-05 07:58:09,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2571 to 1953. [2021-06-05 07:58:09,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1953 states, 1952 states have (on average 2.75) internal successors, (5368), 1952 states have internal predecessors, (5368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:09,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1953 states to 1953 states and 5368 transitions. [2021-06-05 07:58:09,949 INFO L78 Accepts]: Start accepts. Automaton has 1953 states and 5368 transitions. Word has length 75 [2021-06-05 07:58:09,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:09,949 INFO L482 AbstractCegarLoop]: Abstraction has 1953 states and 5368 transitions. [2021-06-05 07:58:09,949 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:09,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1953 states and 5368 transitions. [2021-06-05 07:58:09,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-06-05 07:58:09,951 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:09,951 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:10,152 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2021-06-05 07:58:10,152 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:10,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:10,152 INFO L82 PathProgramCache]: Analyzing trace with hash -128753466, now seen corresponding path program 34 times [2021-06-05 07:58:10,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:10,152 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065819324] [2021-06-05 07:58:10,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:10,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:10,230 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:10,230 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:10,230 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065819324] [2021-06-05 07:58:10,230 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065819324] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:10,230 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250478911] [2021-06-05 07:58:10,230 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:10,280 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:58:10,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:10,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 15 conjunts are in the unsatisfiable core [2021-06-05 07:58:10,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:10,376 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:10,376 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250478911] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:10,376 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:10,376 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2021-06-05 07:58:10,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759884521] [2021-06-05 07:58:10,376 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 07:58:10,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:10,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 07:58:10,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-06-05 07:58:10,377 INFO L87 Difference]: Start difference. First operand 1953 states and 5368 transitions. Second operand has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:10,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:10,587 INFO L93 Difference]: Finished difference Result 2871 states and 7407 transitions. [2021-06-05 07:58:10,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-05 07:58:10,588 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-06-05 07:58:10,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:10,590 INFO L225 Difference]: With dead ends: 2871 [2021-06-05 07:58:10,590 INFO L226 Difference]: Without dead ends: 2601 [2021-06-05 07:58:10,590 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 197.6ms TimeCoverageRelationStatistics Valid=231, Invalid=699, Unknown=0, NotChecked=0, Total=930 [2021-06-05 07:58:10,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2601 states. [2021-06-05 07:58:10,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2601 to 2028. [2021-06-05 07:58:10,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2028 states, 2027 states have (on average 2.759250123334978) internal successors, (5593), 2027 states have internal predecessors, (5593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:10,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2028 states to 2028 states and 5593 transitions. [2021-06-05 07:58:10,611 INFO L78 Accepts]: Start accepts. Automaton has 2028 states and 5593 transitions. Word has length 75 [2021-06-05 07:58:10,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:10,611 INFO L482 AbstractCegarLoop]: Abstraction has 2028 states and 5593 transitions. [2021-06-05 07:58:10,611 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:10,611 INFO L276 IsEmpty]: Start isEmpty. Operand 2028 states and 5593 transitions. [2021-06-05 07:58:10,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-06-05 07:58:10,613 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:10,613 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:10,829 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2021-06-05 07:58:10,829 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:10,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:10,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1901565846, now seen corresponding path program 35 times [2021-06-05 07:58:10,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:10,829 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963996139] [2021-06-05 07:58:10,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:10,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:10,907 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:10,907 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:10,907 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963996139] [2021-06-05 07:58:10,907 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963996139] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:10,907 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534101526] [2021-06-05 07:58:10,907 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:10,969 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-05 07:58:10,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:10,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 15 conjunts are in the unsatisfiable core [2021-06-05 07:58:10,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:11,068 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:11,068 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534101526] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:11,068 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:11,068 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2021-06-05 07:58:11,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463723345] [2021-06-05 07:58:11,068 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 07:58:11,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:11,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 07:58:11,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-06-05 07:58:11,069 INFO L87 Difference]: Start difference. First operand 2028 states and 5593 transitions. Second operand has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:11,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:11,340 INFO L93 Difference]: Finished difference Result 2896 states and 7532 transitions. [2021-06-05 07:58:11,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 07:58:11,340 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-06-05 07:58:11,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:11,342 INFO L225 Difference]: With dead ends: 2896 [2021-06-05 07:58:11,342 INFO L226 Difference]: Without dead ends: 2626 [2021-06-05 07:58:11,343 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 243.7ms TimeCoverageRelationStatistics Valid=253, Invalid=803, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 07:58:11,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2626 states. [2021-06-05 07:58:11,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2626 to 2103. [2021-06-05 07:58:11,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2103 states, 2102 states have (on average 2.7678401522359657) internal successors, (5818), 2102 states have internal predecessors, (5818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:11,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2103 states to 2103 states and 5818 transitions. [2021-06-05 07:58:11,364 INFO L78 Accepts]: Start accepts. Automaton has 2103 states and 5818 transitions. Word has length 75 [2021-06-05 07:58:11,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:11,364 INFO L482 AbstractCegarLoop]: Abstraction has 2103 states and 5818 transitions. [2021-06-05 07:58:11,364 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:11,364 INFO L276 IsEmpty]: Start isEmpty. Operand 2103 states and 5818 transitions. [2021-06-05 07:58:11,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-06-05 07:58:11,366 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:11,366 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:11,566 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:11,567 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:11,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:11,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1779161980, now seen corresponding path program 36 times [2021-06-05 07:58:11,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:11,567 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517813664] [2021-06-05 07:58:11,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:11,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:11,644 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:11,644 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:11,644 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517813664] [2021-06-05 07:58:11,645 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517813664] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:11,645 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822235743] [2021-06-05 07:58:11,645 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:11,713 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-06-05 07:58:11,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:11,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 15 conjunts are in the unsatisfiable core [2021-06-05 07:58:11,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:11,797 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:11,798 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822235743] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:11,798 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:11,798 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2021-06-05 07:58:11,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552883779] [2021-06-05 07:58:11,798 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 07:58:11,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:11,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 07:58:11,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-06-05 07:58:11,798 INFO L87 Difference]: Start difference. First operand 2103 states and 5818 transitions. Second operand has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:12,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:12,037 INFO L93 Difference]: Finished difference Result 2966 states and 7777 transitions. [2021-06-05 07:58:12,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 07:58:12,037 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-06-05 07:58:12,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:12,039 INFO L225 Difference]: With dead ends: 2966 [2021-06-05 07:58:12,040 INFO L226 Difference]: Without dead ends: 2696 [2021-06-05 07:58:12,040 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 207.3ms TimeCoverageRelationStatistics Valid=277, Invalid=779, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 07:58:12,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2696 states. [2021-06-05 07:58:12,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2696 to 2178. [2021-06-05 07:58:12,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2178 states, 2177 states have (on average 2.782728525493799) internal successors, (6058), 2177 states have internal predecessors, (6058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:12,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2178 states to 2178 states and 6058 transitions. [2021-06-05 07:58:12,062 INFO L78 Accepts]: Start accepts. Automaton has 2178 states and 6058 transitions. Word has length 75 [2021-06-05 07:58:12,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:12,062 INFO L482 AbstractCegarLoop]: Abstraction has 2178 states and 6058 transitions. [2021-06-05 07:58:12,062 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:12,062 INFO L276 IsEmpty]: Start isEmpty. Operand 2178 states and 6058 transitions. [2021-06-05 07:58:12,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-06-05 07:58:12,064 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:12,064 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:12,264 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-06-05 07:58:12,265 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:12,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:12,265 INFO L82 PathProgramCache]: Analyzing trace with hash 800563028, now seen corresponding path program 37 times [2021-06-05 07:58:12,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:12,265 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923262847] [2021-06-05 07:58:12,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:12,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:12,341 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:12,341 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:12,341 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923262847] [2021-06-05 07:58:12,341 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923262847] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:12,341 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236337901] [2021-06-05 07:58:12,341 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:12,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:12,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 15 conjunts are in the unsatisfiable core [2021-06-05 07:58:12,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:12,484 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:12,484 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236337901] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:12,484 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:12,484 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2021-06-05 07:58:12,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885615688] [2021-06-05 07:58:12,484 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 07:58:12,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:12,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 07:58:12,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-06-05 07:58:12,485 INFO L87 Difference]: Start difference. First operand 2178 states and 6058 transitions. Second operand has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:12,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:12,831 INFO L93 Difference]: Finished difference Result 3544 states and 9403 transitions. [2021-06-05 07:58:12,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 07:58:12,831 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-06-05 07:58:12,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:12,834 INFO L225 Difference]: With dead ends: 3544 [2021-06-05 07:58:12,834 INFO L226 Difference]: Without dead ends: 2921 [2021-06-05 07:58:12,834 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 294.3ms TimeCoverageRelationStatistics Valid=322, Invalid=1010, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 07:58:12,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2921 states. [2021-06-05 07:58:12,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2921 to 2253. [2021-06-05 07:58:12,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2253 states, 2252 states have (on average 2.7921847246891653) internal successors, (6288), 2252 states have internal predecessors, (6288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:12,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2253 states to 2253 states and 6288 transitions. [2021-06-05 07:58:12,857 INFO L78 Accepts]: Start accepts. Automaton has 2253 states and 6288 transitions. Word has length 75 [2021-06-05 07:58:12,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:12,857 INFO L482 AbstractCegarLoop]: Abstraction has 2253 states and 6288 transitions. [2021-06-05 07:58:12,857 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:12,857 INFO L276 IsEmpty]: Start isEmpty. Operand 2253 states and 6288 transitions. [2021-06-05 07:58:12,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-06-05 07:58:12,859 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:12,859 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:13,060 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:13,060 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:13,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:13,060 INFO L82 PathProgramCache]: Analyzing trace with hash -232084574, now seen corresponding path program 38 times [2021-06-05 07:58:13,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:13,060 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155198997] [2021-06-05 07:58:13,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:13,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:13,130 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:13,130 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:13,130 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155198997] [2021-06-05 07:58:13,130 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155198997] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:13,130 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549635189] [2021-06-05 07:58:13,131 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:13,182 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:58:13,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:13,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-05 07:58:13,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:13,262 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:13,262 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549635189] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:13,262 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:13,262 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2021-06-05 07:58:13,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225173487] [2021-06-05 07:58:13,262 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 07:58:13,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:13,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 07:58:13,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-06-05 07:58:13,263 INFO L87 Difference]: Start difference. First operand 2253 states and 6288 transitions. Second operand has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:13,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:13,523 INFO L93 Difference]: Finished difference Result 3748 states and 10071 transitions. [2021-06-05 07:58:13,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 07:58:13,524 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-06-05 07:58:13,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:13,527 INFO L225 Difference]: With dead ends: 3748 [2021-06-05 07:58:13,527 INFO L226 Difference]: Without dead ends: 3478 [2021-06-05 07:58:13,527 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 225.7ms TimeCoverageRelationStatistics Valid=340, Invalid=850, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 07:58:13,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3478 states. [2021-06-05 07:58:13,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3478 to 2433. [2021-06-05 07:58:13,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2433 states, 2432 states have (on average 2.815378289473684) internal successors, (6847), 2432 states have internal predecessors, (6847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:13,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2433 states to 2433 states and 6847 transitions. [2021-06-05 07:58:13,551 INFO L78 Accepts]: Start accepts. Automaton has 2433 states and 6847 transitions. Word has length 75 [2021-06-05 07:58:13,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:13,552 INFO L482 AbstractCegarLoop]: Abstraction has 2433 states and 6847 transitions. [2021-06-05 07:58:13,552 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:13,552 INFO L276 IsEmpty]: Start isEmpty. Operand 2433 states and 6847 transitions. [2021-06-05 07:58:13,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-06-05 07:58:13,554 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:13,554 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:13,756 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-06-05 07:58:13,757 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:13,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:13,757 INFO L82 PathProgramCache]: Analyzing trace with hash -209741324, now seen corresponding path program 39 times [2021-06-05 07:58:13,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:13,757 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375521268] [2021-06-05 07:58:13,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:13,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:13,847 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:13,847 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:13,847 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375521268] [2021-06-05 07:58:13,847 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375521268] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:13,847 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378398660] [2021-06-05 07:58:13,847 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:13,901 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-05 07:58:13,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:13,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-05 07:58:13,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:13,998 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:13,998 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378398660] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:13,998 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:13,998 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 16 [2021-06-05 07:58:13,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247865948] [2021-06-05 07:58:13,998 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:58:13,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:13,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:58:13,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:58:13,999 INFO L87 Difference]: Start difference. First operand 2433 states and 6847 transitions. Second operand has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:14,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:14,414 INFO L93 Difference]: Finished difference Result 3616 states and 9736 transitions. [2021-06-05 07:58:14,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 07:58:14,414 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-06-05 07:58:14,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:14,417 INFO L225 Difference]: With dead ends: 3616 [2021-06-05 07:58:14,417 INFO L226 Difference]: Without dead ends: 3041 [2021-06-05 07:58:14,418 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 368.4ms TimeCoverageRelationStatistics Valid=395, Invalid=1245, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 07:58:14,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3041 states. [2021-06-05 07:58:14,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3041 to 1724. [2021-06-05 07:58:14,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1724 states, 1723 states have (on average 2.731282646546721) internal successors, (4706), 1723 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:14,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1724 states to 1724 states and 4706 transitions. [2021-06-05 07:58:14,437 INFO L78 Accepts]: Start accepts. Automaton has 1724 states and 4706 transitions. Word has length 75 [2021-06-05 07:58:14,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:14,438 INFO L482 AbstractCegarLoop]: Abstraction has 1724 states and 4706 transitions. [2021-06-05 07:58:14,438 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:14,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1724 states and 4706 transitions. [2021-06-05 07:58:14,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-06-05 07:58:14,439 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:14,439 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:14,648 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:14,649 INFO L430 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:14,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:14,649 INFO L82 PathProgramCache]: Analyzing trace with hash 452139800, now seen corresponding path program 40 times [2021-06-05 07:58:14,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:14,649 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897807514] [2021-06-05 07:58:14,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:14,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:14,773 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:14,773 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:14,773 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897807514] [2021-06-05 07:58:14,773 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897807514] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:14,773 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134121087] [2021-06-05 07:58:14,774 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:14,835 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:58:14,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:14,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2021-06-05 07:58:14,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:14,958 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:14,959 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134121087] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:14,959 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:14,959 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 19 [2021-06-05 07:58:14,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796102383] [2021-06-05 07:58:14,959 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 07:58:14,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:14,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 07:58:14,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2021-06-05 07:58:14,960 INFO L87 Difference]: Start difference. First operand 1724 states and 4706 transitions. Second operand has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:15,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:15,190 INFO L93 Difference]: Finished difference Result 2614 states and 6806 transitions. [2021-06-05 07:58:15,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 07:58:15,191 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-06-05 07:58:15,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:15,193 INFO L225 Difference]: With dead ends: 2614 [2021-06-05 07:58:15,193 INFO L226 Difference]: Without dead ends: 2280 [2021-06-05 07:58:15,194 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 247.8ms TimeCoverageRelationStatistics Valid=308, Invalid=882, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 07:58:15,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2280 states. [2021-06-05 07:58:15,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2280 to 1809. [2021-06-05 07:58:15,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1809 states, 1808 states have (on average 2.6969026548672566) internal successors, (4876), 1808 states have internal predecessors, (4876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:15,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 4876 transitions. [2021-06-05 07:58:15,211 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 4876 transitions. Word has length 80 [2021-06-05 07:58:15,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:15,212 INFO L482 AbstractCegarLoop]: Abstraction has 1809 states and 4876 transitions. [2021-06-05 07:58:15,212 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:15,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 4876 transitions. [2021-06-05 07:58:15,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-06-05 07:58:15,213 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:15,213 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:15,413 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-06-05 07:58:15,414 INFO L430 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:15,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:15,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1173866716, now seen corresponding path program 41 times [2021-06-05 07:58:15,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:15,414 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719245354] [2021-06-05 07:58:15,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:15,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:15,513 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:15,513 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:15,513 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719245354] [2021-06-05 07:58:15,513 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719245354] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:15,513 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591364386] [2021-06-05 07:58:15,513 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:15,570 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-06-05 07:58:15,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:15,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-05 07:58:15,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:15,675 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:15,675 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591364386] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:15,675 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:15,675 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-06-05 07:58:15,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10027892] [2021-06-05 07:58:15,676 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:58:15,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:15,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:58:15,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:58:15,676 INFO L87 Difference]: Start difference. First operand 1809 states and 4876 transitions. Second operand has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:15,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:15,860 INFO L93 Difference]: Finished difference Result 3036 states and 7587 transitions. [2021-06-05 07:58:15,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 07:58:15,860 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-06-05 07:58:15,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:15,863 INFO L225 Difference]: With dead ends: 3036 [2021-06-05 07:58:15,863 INFO L226 Difference]: Without dead ends: 2766 [2021-06-05 07:58:15,863 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 182.6ms TimeCoverageRelationStatistics Valid=215, Invalid=597, Unknown=0, NotChecked=0, Total=812 [2021-06-05 07:58:15,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2766 states. [2021-06-05 07:58:15,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2766 to 1953. [2021-06-05 07:58:15,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1953 states, 1952 states have (on average 2.711577868852459) internal successors, (5293), 1952 states have internal predecessors, (5293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:15,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1953 states to 1953 states and 5293 transitions. [2021-06-05 07:58:15,883 INFO L78 Accepts]: Start accepts. Automaton has 1953 states and 5293 transitions. Word has length 80 [2021-06-05 07:58:15,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:15,883 INFO L482 AbstractCegarLoop]: Abstraction has 1953 states and 5293 transitions. [2021-06-05 07:58:15,883 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:15,883 INFO L276 IsEmpty]: Start isEmpty. Operand 1953 states and 5293 transitions. [2021-06-05 07:58:15,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-06-05 07:58:15,885 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:15,885 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:16,092 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-06-05 07:58:16,093 INFO L430 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:16,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:16,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1794345044, now seen corresponding path program 42 times [2021-06-05 07:58:16,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:16,093 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344358167] [2021-06-05 07:58:16,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:16,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:16,207 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:16,208 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:16,208 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344358167] [2021-06-05 07:58:16,208 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344358167] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:16,208 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226780634] [2021-06-05 07:58:16,208 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:16,283 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-06-05 07:58:16,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:16,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-05 07:58:16,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:16,397 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:16,397 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226780634] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:16,397 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:16,397 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-06-05 07:58:16,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193705087] [2021-06-05 07:58:16,397 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:58:16,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:16,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:58:16,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:58:16,398 INFO L87 Difference]: Start difference. First operand 1953 states and 5293 transitions. Second operand has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:16,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:16,664 INFO L93 Difference]: Finished difference Result 2996 states and 7582 transitions. [2021-06-05 07:58:16,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 07:58:16,664 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-06-05 07:58:16,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:16,667 INFO L225 Difference]: With dead ends: 2996 [2021-06-05 07:58:16,667 INFO L226 Difference]: Without dead ends: 2726 [2021-06-05 07:58:16,667 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 280.8ms TimeCoverageRelationStatistics Valid=264, Invalid=792, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 07:58:16,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2726 states. [2021-06-05 07:58:16,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2726 to 2028. [2021-06-05 07:58:16,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2028 states, 2027 states have (on average 2.7222496299950665) internal successors, (5518), 2027 states have internal predecessors, (5518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:16,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2028 states to 2028 states and 5518 transitions. [2021-06-05 07:58:16,688 INFO L78 Accepts]: Start accepts. Automaton has 2028 states and 5518 transitions. Word has length 80 [2021-06-05 07:58:16,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:16,688 INFO L482 AbstractCegarLoop]: Abstraction has 2028 states and 5518 transitions. [2021-06-05 07:58:16,688 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:16,688 INFO L276 IsEmpty]: Start isEmpty. Operand 2028 states and 5518 transitions. [2021-06-05 07:58:16,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-06-05 07:58:16,690 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:16,690 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:16,890 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,46 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:16,890 INFO L430 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:16,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:16,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1340128870, now seen corresponding path program 43 times [2021-06-05 07:58:16,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:16,891 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366606679] [2021-06-05 07:58:16,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:16,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:16,972 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:16,972 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:16,973 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366606679] [2021-06-05 07:58:16,973 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366606679] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:16,973 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130263901] [2021-06-05 07:58:16,973 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:17,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:17,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-05 07:58:17,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:17,125 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:17,125 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130263901] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:17,125 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:17,125 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-06-05 07:58:17,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854814589] [2021-06-05 07:58:17,126 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:58:17,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:17,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:58:17,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:58:17,126 INFO L87 Difference]: Start difference. First operand 2028 states and 5518 transitions. Second operand has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:17,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:17,336 INFO L93 Difference]: Finished difference Result 3046 states and 7757 transitions. [2021-06-05 07:58:17,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-05 07:58:17,337 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-06-05 07:58:17,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:17,340 INFO L225 Difference]: With dead ends: 3046 [2021-06-05 07:58:17,340 INFO L226 Difference]: Without dead ends: 2776 [2021-06-05 07:58:17,340 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 199.1ms TimeCoverageRelationStatistics Valid=229, Invalid=701, Unknown=0, NotChecked=0, Total=930 [2021-06-05 07:58:17,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2776 states. [2021-06-05 07:58:17,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2776 to 2103. [2021-06-05 07:58:17,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2103 states, 2102 states have (on average 2.7321598477640343) internal successors, (5743), 2102 states have internal predecessors, (5743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:17,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2103 states to 2103 states and 5743 transitions. [2021-06-05 07:58:17,364 INFO L78 Accepts]: Start accepts. Automaton has 2103 states and 5743 transitions. Word has length 80 [2021-06-05 07:58:17,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:17,368 INFO L482 AbstractCegarLoop]: Abstraction has 2103 states and 5743 transitions. [2021-06-05 07:58:17,368 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:17,369 INFO L276 IsEmpty]: Start isEmpty. Operand 2103 states and 5743 transitions. [2021-06-05 07:58:17,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-06-05 07:58:17,370 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:17,371 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:17,572 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2021-06-05 07:58:17,573 INFO L430 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:17,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:17,573 INFO L82 PathProgramCache]: Analyzing trace with hash -341232534, now seen corresponding path program 44 times [2021-06-05 07:58:17,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:17,573 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178574678] [2021-06-05 07:58:17,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:17,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:17,665 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:17,665 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:17,665 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178574678] [2021-06-05 07:58:17,665 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178574678] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:17,665 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487219101] [2021-06-05 07:58:17,666 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:17,716 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:58:17,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:17,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-05 07:58:17,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:17,842 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:17,842 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487219101] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:17,842 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:17,842 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-06-05 07:58:17,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545487664] [2021-06-05 07:58:17,843 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:58:17,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:17,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:58:17,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:58:17,843 INFO L87 Difference]: Start difference. First operand 2103 states and 5743 transitions. Second operand has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:18,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:18,122 INFO L93 Difference]: Finished difference Result 3071 states and 7882 transitions. [2021-06-05 07:58:18,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 07:58:18,122 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-06-05 07:58:18,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:18,125 INFO L225 Difference]: With dead ends: 3071 [2021-06-05 07:58:18,125 INFO L226 Difference]: Without dead ends: 2801 [2021-06-05 07:58:18,125 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 273.1ms TimeCoverageRelationStatistics Valid=286, Invalid=904, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 07:58:18,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2801 states. [2021-06-05 07:58:18,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2801 to 2178. [2021-06-05 07:58:18,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2178 states, 2177 states have (on average 2.7413872301332107) internal successors, (5968), 2177 states have internal predecessors, (5968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:18,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2178 states to 2178 states and 5968 transitions. [2021-06-05 07:58:18,147 INFO L78 Accepts]: Start accepts. Automaton has 2178 states and 5968 transitions. Word has length 80 [2021-06-05 07:58:18,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:18,147 INFO L482 AbstractCegarLoop]: Abstraction has 2178 states and 5968 transitions. [2021-06-05 07:58:18,147 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:18,147 INFO L276 IsEmpty]: Start isEmpty. Operand 2178 states and 5968 transitions. [2021-06-05 07:58:18,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-06-05 07:58:18,149 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:18,149 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:18,352 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:18,353 INFO L430 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:18,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:18,353 INFO L82 PathProgramCache]: Analyzing trace with hash 2074406872, now seen corresponding path program 45 times [2021-06-05 07:58:18,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:18,353 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190694357] [2021-06-05 07:58:18,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:18,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:18,440 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:18,440 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:18,441 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190694357] [2021-06-05 07:58:18,441 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190694357] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:18,441 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044222873] [2021-06-05 07:58:18,441 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:18,502 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-06-05 07:58:18,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:18,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 21 conjunts are in the unsatisfiable core [2021-06-05 07:58:18,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:18,617 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:18,617 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044222873] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:18,617 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:18,617 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-06-05 07:58:18,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138358591] [2021-06-05 07:58:18,618 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:58:18,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:18,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:58:18,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:58:18,618 INFO L87 Difference]: Start difference. First operand 2178 states and 5968 transitions. Second operand has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:18,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:18,847 INFO L93 Difference]: Finished difference Result 3096 states and 8007 transitions. [2021-06-05 07:58:18,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-05 07:58:18,847 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-06-05 07:58:18,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:18,850 INFO L225 Difference]: With dead ends: 3096 [2021-06-05 07:58:18,850 INFO L226 Difference]: Without dead ends: 2826 [2021-06-05 07:58:18,850 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 218.7ms TimeCoverageRelationStatistics Valid=259, Invalid=797, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 07:58:18,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2826 states. [2021-06-05 07:58:18,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2826 to 2253. [2021-06-05 07:58:18,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2253 states, 2252 states have (on average 2.75) internal successors, (6193), 2252 states have internal predecessors, (6193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:18,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2253 states to 2253 states and 6193 transitions. [2021-06-05 07:58:18,872 INFO L78 Accepts]: Start accepts. Automaton has 2253 states and 6193 transitions. Word has length 80 [2021-06-05 07:58:18,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:18,872 INFO L482 AbstractCegarLoop]: Abstraction has 2253 states and 6193 transitions. [2021-06-05 07:58:18,872 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:18,872 INFO L276 IsEmpty]: Start isEmpty. Operand 2253 states and 6193 transitions. [2021-06-05 07:58:18,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-06-05 07:58:18,874 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:18,874 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:19,074 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,49 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:19,075 INFO L430 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:19,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:19,075 INFO L82 PathProgramCache]: Analyzing trace with hash -190241112, now seen corresponding path program 46 times [2021-06-05 07:58:19,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:19,075 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305501876] [2021-06-05 07:58:19,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:19,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:19,161 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:19,161 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:19,161 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305501876] [2021-06-05 07:58:19,161 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305501876] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:19,161 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174375760] [2021-06-05 07:58:19,161 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:19,212 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:58:19,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:19,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-05 07:58:19,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:19,328 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:19,329 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174375760] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:19,329 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:19,329 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-06-05 07:58:19,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820215222] [2021-06-05 07:58:19,329 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:58:19,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:19,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:58:19,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:58:19,329 INFO L87 Difference]: Start difference. First operand 2253 states and 6193 transitions. Second operand has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:19,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:19,664 INFO L93 Difference]: Finished difference Result 3121 states and 8132 transitions. [2021-06-05 07:58:19,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 07:58:19,664 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-06-05 07:58:19,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:19,667 INFO L225 Difference]: With dead ends: 3121 [2021-06-05 07:58:19,667 INFO L226 Difference]: Without dead ends: 2851 [2021-06-05 07:58:19,667 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 305.9ms TimeCoverageRelationStatistics Valid=324, Invalid=1008, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 07:58:19,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2851 states. [2021-06-05 07:58:19,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2851 to 2328. [2021-06-05 07:58:19,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2328 states, 2327 states have (on average 2.758057584873227) internal successors, (6418), 2327 states have internal predecessors, (6418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:19,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2328 states to 2328 states and 6418 transitions. [2021-06-05 07:58:19,691 INFO L78 Accepts]: Start accepts. Automaton has 2328 states and 6418 transitions. Word has length 80 [2021-06-05 07:58:19,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:19,691 INFO L482 AbstractCegarLoop]: Abstraction has 2328 states and 6418 transitions. [2021-06-05 07:58:19,691 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:19,691 INFO L276 IsEmpty]: Start isEmpty. Operand 2328 states and 6418 transitions. [2021-06-05 07:58:19,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-06-05 07:58:19,693 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:19,693 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:19,893 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-06-05 07:58:19,893 INFO L430 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:19,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:19,894 INFO L82 PathProgramCache]: Analyzing trace with hash 423998358, now seen corresponding path program 47 times [2021-06-05 07:58:19,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:19,894 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618592612] [2021-06-05 07:58:19,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:19,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:19,975 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:19,976 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:19,976 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618592612] [2021-06-05 07:58:19,976 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618592612] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:19,976 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967162154] [2021-06-05 07:58:19,976 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:20,026 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-06-05 07:58:20,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:20,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-05 07:58:20,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:20,134 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:20,134 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967162154] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:20,134 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:20,134 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-06-05 07:58:20,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522261315] [2021-06-05 07:58:20,134 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:58:20,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:20,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:58:20,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:58:20,135 INFO L87 Difference]: Start difference. First operand 2328 states and 6418 transitions. Second operand has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:20,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:20,410 INFO L93 Difference]: Finished difference Result 3191 states and 8377 transitions. [2021-06-05 07:58:20,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 07:58:20,410 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-06-05 07:58:20,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:20,413 INFO L225 Difference]: With dead ends: 3191 [2021-06-05 07:58:20,413 INFO L226 Difference]: Without dead ends: 2921 [2021-06-05 07:58:20,413 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 248.5ms TimeCoverageRelationStatistics Valid=305, Invalid=885, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 07:58:20,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2921 states. [2021-06-05 07:58:20,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2921 to 2403. [2021-06-05 07:58:20,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2403 states, 2402 states have (on average 2.7718567860116567) internal successors, (6658), 2402 states have internal predecessors, (6658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:20,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2403 states to 2403 states and 6658 transitions. [2021-06-05 07:58:20,446 INFO L78 Accepts]: Start accepts. Automaton has 2403 states and 6658 transitions. Word has length 80 [2021-06-05 07:58:20,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:20,446 INFO L482 AbstractCegarLoop]: Abstraction has 2403 states and 6658 transitions. [2021-06-05 07:58:20,446 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:20,446 INFO L276 IsEmpty]: Start isEmpty. Operand 2403 states and 6658 transitions. [2021-06-05 07:58:20,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-06-05 07:58:20,448 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:20,448 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:20,648 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:20,648 INFO L430 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:20,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:20,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1291243930, now seen corresponding path program 48 times [2021-06-05 07:58:20,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:20,649 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452696775] [2021-06-05 07:58:20,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:20,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:20,731 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:20,731 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:20,731 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452696775] [2021-06-05 07:58:20,732 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452696775] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:20,732 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701221160] [2021-06-05 07:58:20,732 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:20,787 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-06-05 07:58:20,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:20,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 19 conjunts are in the unsatisfiable core [2021-06-05 07:58:20,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:20,904 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:20,904 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701221160] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:20,904 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:20,904 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-06-05 07:58:20,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635155348] [2021-06-05 07:58:20,905 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:58:20,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:20,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:58:20,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:58:20,905 INFO L87 Difference]: Start difference. First operand 2403 states and 6658 transitions. Second operand has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:21,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:21,272 INFO L93 Difference]: Finished difference Result 3769 states and 10003 transitions. [2021-06-05 07:58:21,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 07:58:21,272 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-06-05 07:58:21,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:21,275 INFO L225 Difference]: With dead ends: 3769 [2021-06-05 07:58:21,275 INFO L226 Difference]: Without dead ends: 3146 [2021-06-05 07:58:21,276 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 318.5ms TimeCoverageRelationStatistics Valid=338, Invalid=1144, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 07:58:21,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3146 states. [2021-06-05 07:58:21,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3146 to 2478. [2021-06-05 07:58:21,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2478 states, 2477 states have (on average 2.7807832054905126) internal successors, (6888), 2477 states have internal predecessors, (6888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:21,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2478 states to 2478 states and 6888 transitions. [2021-06-05 07:58:21,298 INFO L78 Accepts]: Start accepts. Automaton has 2478 states and 6888 transitions. Word has length 80 [2021-06-05 07:58:21,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:21,298 INFO L482 AbstractCegarLoop]: Abstraction has 2478 states and 6888 transitions. [2021-06-05 07:58:21,298 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:21,298 INFO L276 IsEmpty]: Start isEmpty. Operand 2478 states and 6888 transitions. [2021-06-05 07:58:21,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-06-05 07:58:21,300 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:21,300 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:21,500 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-06-05 07:58:21,500 INFO L430 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:21,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:21,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1971075764, now seen corresponding path program 49 times [2021-06-05 07:58:21,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:21,501 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808266545] [2021-06-05 07:58:21,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:21,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:21,571 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:21,572 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:21,572 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808266545] [2021-06-05 07:58:21,572 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808266545] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:21,572 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623226157] [2021-06-05 07:58:21,572 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:21,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:21,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-05 07:58:21,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:21,715 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:21,715 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623226157] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:21,716 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:21,716 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-06-05 07:58:21,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526553603] [2021-06-05 07:58:21,716 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:58:21,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:21,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:58:21,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:58:21,716 INFO L87 Difference]: Start difference. First operand 2478 states and 6888 transitions. Second operand has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:21,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:21,987 INFO L93 Difference]: Finished difference Result 3998 states and 10721 transitions. [2021-06-05 07:58:21,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 07:58:21,987 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-06-05 07:58:21,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:21,991 INFO L225 Difference]: With dead ends: 3998 [2021-06-05 07:58:21,991 INFO L226 Difference]: Without dead ends: 3728 [2021-06-05 07:58:21,991 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 233.7ms TimeCoverageRelationStatistics Valid=368, Invalid=964, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 07:58:21,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3728 states. [2021-06-05 07:58:22,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3728 to 2658. [2021-06-05 07:58:22,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2658 states, 2657 states have (on average 2.8027850959729017) internal successors, (7447), 2657 states have internal predecessors, (7447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:22,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2658 states to 2658 states and 7447 transitions. [2021-06-05 07:58:22,022 INFO L78 Accepts]: Start accepts. Automaton has 2658 states and 7447 transitions. Word has length 80 [2021-06-05 07:58:22,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:22,022 INFO L482 AbstractCegarLoop]: Abstraction has 2658 states and 7447 transitions. [2021-06-05 07:58:22,022 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:22,022 INFO L276 IsEmpty]: Start isEmpty. Operand 2658 states and 7447 transitions. [2021-06-05 07:58:22,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-06-05 07:58:22,024 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:22,024 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:22,236 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-06-05 07:58:22,237 INFO L430 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:22,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:22,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1993419014, now seen corresponding path program 50 times [2021-06-05 07:58:22,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:22,237 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190540018] [2021-06-05 07:58:22,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:22,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:22,323 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:22,324 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:22,324 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190540018] [2021-06-05 07:58:22,324 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190540018] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:22,324 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678455657] [2021-06-05 07:58:22,324 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:22,392 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:58:22,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:22,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2021-06-05 07:58:22,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:22,497 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:22,497 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678455657] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:22,497 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:22,497 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-06-05 07:58:22,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332722916] [2021-06-05 07:58:22,497 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:58:22,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:22,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:58:22,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:58:22,498 INFO L87 Difference]: Start difference. First operand 2658 states and 7447 transitions. Second operand has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:22,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:22,901 INFO L93 Difference]: Finished difference Result 3821 states and 10221 transitions. [2021-06-05 07:58:22,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 07:58:22,902 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-06-05 07:58:22,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:22,905 INFO L225 Difference]: With dead ends: 3821 [2021-06-05 07:58:22,905 INFO L226 Difference]: Without dead ends: 3246 [2021-06-05 07:58:22,905 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 370.9ms TimeCoverageRelationStatistics Valid=405, Invalid=1317, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 07:58:22,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3246 states. [2021-06-05 07:58:22,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3246 to 2003. [2021-06-05 07:58:22,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2003 states, 2002 states have (on average 2.7312687312687314) internal successors, (5468), 2002 states have internal predecessors, (5468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:22,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2003 states to 2003 states and 5468 transitions. [2021-06-05 07:58:22,929 INFO L78 Accepts]: Start accepts. Automaton has 2003 states and 5468 transitions. Word has length 80 [2021-06-05 07:58:22,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:22,929 INFO L482 AbstractCegarLoop]: Abstraction has 2003 states and 5468 transitions. [2021-06-05 07:58:22,929 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:22,930 INFO L276 IsEmpty]: Start isEmpty. Operand 2003 states and 5468 transitions. [2021-06-05 07:58:22,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-06-05 07:58:22,931 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:22,931 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:23,132 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-06-05 07:58:23,133 INFO L430 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:23,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:23,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1150498713, now seen corresponding path program 51 times [2021-06-05 07:58:23,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:23,133 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818165451] [2021-06-05 07:58:23,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:23,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:23,228 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:23,228 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:23,228 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818165451] [2021-06-05 07:58:23,228 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818165451] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:23,228 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360449397] [2021-06-05 07:58:23,228 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:23,299 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-06-05 07:58:23,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:23,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 17 conjunts are in the unsatisfiable core [2021-06-05 07:58:23,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:23,401 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:23,401 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360449397] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:23,401 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:23,401 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2021-06-05 07:58:23,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315277383] [2021-06-05 07:58:23,401 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:58:23,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:23,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:58:23,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:58:23,402 INFO L87 Difference]: Start difference. First operand 2003 states and 5468 transitions. Second operand has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:23,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:23,619 INFO L93 Difference]: Finished difference Result 2921 states and 7507 transitions. [2021-06-05 07:58:23,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 07:58:23,619 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-06-05 07:58:23,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:23,622 INFO L225 Difference]: With dead ends: 2921 [2021-06-05 07:58:23,622 INFO L226 Difference]: Without dead ends: 2651 [2021-06-05 07:58:23,622 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 215.7ms TimeCoverageRelationStatistics Valid=262, Invalid=794, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 07:58:23,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2651 states. [2021-06-05 07:58:23,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2651 to 2078. [2021-06-05 07:58:23,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2078 states, 2077 states have (on average 2.740972556571979) internal successors, (5693), 2077 states have internal predecessors, (5693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:23,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2078 states to 2078 states and 5693 transitions. [2021-06-05 07:58:23,642 INFO L78 Accepts]: Start accepts. Automaton has 2078 states and 5693 transitions. Word has length 85 [2021-06-05 07:58:23,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:23,642 INFO L482 AbstractCegarLoop]: Abstraction has 2078 states and 5693 transitions. [2021-06-05 07:58:23,642 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:23,642 INFO L276 IsEmpty]: Start isEmpty. Operand 2078 states and 5693 transitions. [2021-06-05 07:58:23,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-06-05 07:58:23,643 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:23,643 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:23,844 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-06-05 07:58:23,844 INFO L430 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:23,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:23,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1817713047, now seen corresponding path program 52 times [2021-06-05 07:58:23,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:23,844 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886410413] [2021-06-05 07:58:23,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:23,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:23,986 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:23,986 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:23,986 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886410413] [2021-06-05 07:58:23,986 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886410413] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:23,986 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576287564] [2021-06-05 07:58:23,986 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:24,043 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:58:24,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:24,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 17 conjunts are in the unsatisfiable core [2021-06-05 07:58:24,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:24,163 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:24,164 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576287564] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:24,164 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:24,164 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-06-05 07:58:24,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82859381] [2021-06-05 07:58:24,164 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:58:24,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:24,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:58:24,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:58:24,164 INFO L87 Difference]: Start difference. First operand 2078 states and 5693 transitions. Second operand has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:24,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:24,447 INFO L93 Difference]: Finished difference Result 3191 states and 8122 transitions. [2021-06-05 07:58:24,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 07:58:24,447 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-06-05 07:58:24,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:24,450 INFO L225 Difference]: With dead ends: 3191 [2021-06-05 07:58:24,450 INFO L226 Difference]: Without dead ends: 2921 [2021-06-05 07:58:24,451 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 293.6ms TimeCoverageRelationStatistics Valid=305, Invalid=955, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 07:58:24,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2921 states. [2021-06-05 07:58:24,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2921 to 2153. [2021-06-05 07:58:24,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2153 states, 2152 states have (on average 2.75) internal successors, (5918), 2152 states have internal predecessors, (5918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:24,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 5918 transitions. [2021-06-05 07:58:24,473 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 5918 transitions. Word has length 85 [2021-06-05 07:58:24,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:24,474 INFO L482 AbstractCegarLoop]: Abstraction has 2153 states and 5918 transitions. [2021-06-05 07:58:24,474 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:24,474 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 5918 transitions. [2021-06-05 07:58:24,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-06-05 07:58:24,475 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:24,475 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:24,676 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:24,676 INFO L430 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:24,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:24,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1363496873, now seen corresponding path program 53 times [2021-06-05 07:58:24,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:24,676 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999755002] [2021-06-05 07:58:24,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:24,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:24,772 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:24,772 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:24,772 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999755002] [2021-06-05 07:58:24,772 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999755002] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:24,773 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256325303] [2021-06-05 07:58:24,773 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:24,825 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-06-05 07:58:24,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:24,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 17 conjunts are in the unsatisfiable core [2021-06-05 07:58:24,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:24,940 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:24,940 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256325303] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:24,940 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:24,940 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2021-06-05 07:58:24,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091952471] [2021-06-05 07:58:24,941 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:58:24,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:24,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:58:24,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:58:24,942 INFO L87 Difference]: Start difference. First operand 2153 states and 5918 transitions. Second operand has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:25,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:25,194 INFO L93 Difference]: Finished difference Result 3221 states and 8257 transitions. [2021-06-05 07:58:25,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 07:58:25,195 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-06-05 07:58:25,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:25,197 INFO L225 Difference]: With dead ends: 3221 [2021-06-05 07:58:25,197 INFO L226 Difference]: Without dead ends: 2951 [2021-06-05 07:58:25,198 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 245.1ms TimeCoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 07:58:25,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2021-06-05 07:58:25,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2228. [2021-06-05 07:58:25,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2228 states, 2227 states have (on average 2.7584193982936687) internal successors, (6143), 2227 states have internal predecessors, (6143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:25,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2228 states to 2228 states and 6143 transitions. [2021-06-05 07:58:25,220 INFO L78 Accepts]: Start accepts. Automaton has 2228 states and 6143 transitions. Word has length 85 [2021-06-05 07:58:25,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:25,221 INFO L482 AbstractCegarLoop]: Abstraction has 2228 states and 6143 transitions. [2021-06-05 07:58:25,221 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:25,221 INFO L276 IsEmpty]: Start isEmpty. Operand 2228 states and 6143 transitions. [2021-06-05 07:58:25,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-06-05 07:58:25,222 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:25,222 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:25,423 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,57 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:25,423 INFO L430 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:25,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:25,423 INFO L82 PathProgramCache]: Analyzing trace with hash -364600537, now seen corresponding path program 54 times [2021-06-05 07:58:25,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:25,424 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719582161] [2021-06-05 07:58:25,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:25,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:25,524 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:25,524 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:25,524 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719582161] [2021-06-05 07:58:25,525 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719582161] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:25,525 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307704728] [2021-06-05 07:58:25,525 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:25,587 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-06-05 07:58:25,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:25,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 17 conjunts are in the unsatisfiable core [2021-06-05 07:58:25,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:25,701 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:25,701 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307704728] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:25,701 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:25,701 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-06-05 07:58:25,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460611582] [2021-06-05 07:58:25,702 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:58:25,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:25,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:58:25,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:58:25,702 INFO L87 Difference]: Start difference. First operand 2228 states and 6143 transitions. Second operand has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:26,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:26,040 INFO L93 Difference]: Finished difference Result 3246 states and 8382 transitions. [2021-06-05 07:58:26,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 07:58:26,040 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-06-05 07:58:26,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:26,043 INFO L225 Difference]: With dead ends: 3246 [2021-06-05 07:58:26,043 INFO L226 Difference]: Without dead ends: 2976 [2021-06-05 07:58:26,044 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 328.2ms TimeCoverageRelationStatistics Valid=334, Invalid=1072, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 07:58:26,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2976 states. [2021-06-05 07:58:26,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2976 to 2303. [2021-06-05 07:58:26,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2303 states, 2302 states have (on average 2.7662901824500437) internal successors, (6368), 2302 states have internal predecessors, (6368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:26,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2303 states to 2303 states and 6368 transitions. [2021-06-05 07:58:26,067 INFO L78 Accepts]: Start accepts. Automaton has 2303 states and 6368 transitions. Word has length 85 [2021-06-05 07:58:26,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:26,068 INFO L482 AbstractCegarLoop]: Abstraction has 2303 states and 6368 transitions. [2021-06-05 07:58:26,068 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:26,068 INFO L276 IsEmpty]: Start isEmpty. Operand 2303 states and 6368 transitions. [2021-06-05 07:58:26,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-06-05 07:58:26,069 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:26,069 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:26,270 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:26,270 INFO L430 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:26,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:26,273 INFO L82 PathProgramCache]: Analyzing trace with hash 2051038869, now seen corresponding path program 55 times [2021-06-05 07:58:26,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:26,273 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022225624] [2021-06-05 07:58:26,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:26,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:26,375 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:26,375 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:26,375 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022225624] [2021-06-05 07:58:26,375 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022225624] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:26,375 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247976491] [2021-06-05 07:58:26,375 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:26,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:26,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 17 conjunts are in the unsatisfiable core [2021-06-05 07:58:26,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:26,549 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:26,550 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247976491] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:26,550 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:26,550 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2021-06-05 07:58:26,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756871058] [2021-06-05 07:58:26,550 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:58:26,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:26,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:58:26,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:58:26,552 INFO L87 Difference]: Start difference. First operand 2303 states and 6368 transitions. Second operand has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:26,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:26,824 INFO L93 Difference]: Finished difference Result 3271 states and 8507 transitions. [2021-06-05 07:58:26,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 07:58:26,825 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-06-05 07:58:26,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:26,827 INFO L225 Difference]: With dead ends: 3271 [2021-06-05 07:58:26,827 INFO L226 Difference]: Without dead ends: 3001 [2021-06-05 07:58:26,828 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 256.6ms TimeCoverageRelationStatistics Valid=354, Invalid=1052, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 07:58:26,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3001 states. [2021-06-05 07:58:26,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3001 to 2378. [2021-06-05 07:58:26,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2378 states, 2377 states have (on average 2.7736642827092974) internal successors, (6593), 2377 states have internal predecessors, (6593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:26,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2378 states to 2378 states and 6593 transitions. [2021-06-05 07:58:26,852 INFO L78 Accepts]: Start accepts. Automaton has 2378 states and 6593 transitions. Word has length 85 [2021-06-05 07:58:26,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:26,852 INFO L482 AbstractCegarLoop]: Abstraction has 2378 states and 6593 transitions. [2021-06-05 07:58:26,852 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:26,852 INFO L276 IsEmpty]: Start isEmpty. Operand 2378 states and 6593 transitions. [2021-06-05 07:58:26,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-06-05 07:58:26,854 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:26,854 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:27,054 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2021-06-05 07:58:27,054 INFO L430 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:27,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:27,055 INFO L82 PathProgramCache]: Analyzing trace with hash -213609115, now seen corresponding path program 56 times [2021-06-05 07:58:27,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:27,055 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417800481] [2021-06-05 07:58:27,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:27,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:27,153 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:27,154 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:27,154 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417800481] [2021-06-05 07:58:27,154 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417800481] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:27,154 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49397509] [2021-06-05 07:58:27,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:27,221 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:58:27,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:27,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 17 conjunts are in the unsatisfiable core [2021-06-05 07:58:27,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:27,341 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:27,342 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49397509] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:27,342 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:27,342 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-06-05 07:58:27,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487855077] [2021-06-05 07:58:27,342 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:58:27,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:27,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:58:27,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:58:27,342 INFO L87 Difference]: Start difference. First operand 2378 states and 6593 transitions. Second operand has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:27,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:27,712 INFO L93 Difference]: Finished difference Result 3296 states and 8632 transitions. [2021-06-05 07:58:27,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 07:58:27,712 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-06-05 07:58:27,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:27,715 INFO L225 Difference]: With dead ends: 3296 [2021-06-05 07:58:27,715 INFO L226 Difference]: Without dead ends: 3026 [2021-06-05 07:58:27,715 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 352.2ms TimeCoverageRelationStatistics Valid=379, Invalid=1181, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 07:58:27,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3026 states. [2021-06-05 07:58:27,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3026 to 2453. [2021-06-05 07:58:27,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2453 states, 2452 states have (on average 2.7805872756933114) internal successors, (6818), 2452 states have internal predecessors, (6818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:27,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2453 states to 2453 states and 6818 transitions. [2021-06-05 07:58:27,740 INFO L78 Accepts]: Start accepts. Automaton has 2453 states and 6818 transitions. Word has length 85 [2021-06-05 07:58:27,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:27,740 INFO L482 AbstractCegarLoop]: Abstraction has 2453 states and 6818 transitions. [2021-06-05 07:58:27,740 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:27,741 INFO L276 IsEmpty]: Start isEmpty. Operand 2453 states and 6818 transitions. [2021-06-05 07:58:27,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-06-05 07:58:27,742 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:27,742 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:27,943 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:27,943 INFO L430 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:27,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:27,943 INFO L82 PathProgramCache]: Analyzing trace with hash 400630355, now seen corresponding path program 57 times [2021-06-05 07:58:27,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:27,943 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162442992] [2021-06-05 07:58:27,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:27,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:28,026 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:28,026 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:28,026 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162442992] [2021-06-05 07:58:28,026 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162442992] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:28,027 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997307075] [2021-06-05 07:58:28,027 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:28,083 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-06-05 07:58:28,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:28,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 07:58:28,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:28,247 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:28,247 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [997307075] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:28,247 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:28,247 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2021-06-05 07:58:28,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848518994] [2021-06-05 07:58:28,247 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:58:28,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:28,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:58:28,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:58:28,248 INFO L87 Difference]: Start difference. First operand 2453 states and 6818 transitions. Second operand has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:28,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:28,548 INFO L93 Difference]: Finished difference Result 3366 states and 8877 transitions. [2021-06-05 07:58:28,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 07:58:28,548 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-06-05 07:58:28,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:28,551 INFO L225 Difference]: With dead ends: 3366 [2021-06-05 07:58:28,551 INFO L226 Difference]: Without dead ends: 3096 [2021-06-05 07:58:28,551 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 280.3ms TimeCoverageRelationStatistics Valid=413, Invalid=1147, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 07:58:28,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3096 states. [2021-06-05 07:58:28,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3096 to 2528. [2021-06-05 07:58:28,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2528 states, 2527 states have (on average 2.7930352196280173) internal successors, (7058), 2527 states have internal predecessors, (7058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:28,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2528 states to 2528 states and 7058 transitions. [2021-06-05 07:58:28,578 INFO L78 Accepts]: Start accepts. Automaton has 2528 states and 7058 transitions. Word has length 85 [2021-06-05 07:58:28,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:28,578 INFO L482 AbstractCegarLoop]: Abstraction has 2528 states and 7058 transitions. [2021-06-05 07:58:28,578 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:28,578 INFO L276 IsEmpty]: Start isEmpty. Operand 2528 states and 7058 transitions. [2021-06-05 07:58:28,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-06-05 07:58:28,580 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:28,580 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:28,780 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2021-06-05 07:58:28,780 INFO L430 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:28,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:28,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1314611933, now seen corresponding path program 58 times [2021-06-05 07:58:28,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:28,781 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754038518] [2021-06-05 07:58:28,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:28,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:28,874 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:28,874 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:28,874 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754038518] [2021-06-05 07:58:28,874 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754038518] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:28,874 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595329857] [2021-06-05 07:58:28,874 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:28,926 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:58:28,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:28,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 17 conjunts are in the unsatisfiable core [2021-06-05 07:58:28,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:29,048 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:29,048 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595329857] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:29,048 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:29,048 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-06-05 07:58:29,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139074427] [2021-06-05 07:58:29,049 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:58:29,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:29,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:58:29,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:58:29,049 INFO L87 Difference]: Start difference. First operand 2528 states and 7058 transitions. Second operand has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:29,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:29,484 INFO L93 Difference]: Finished difference Result 3944 states and 10503 transitions. [2021-06-05 07:58:29,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 07:58:29,484 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-06-05 07:58:29,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:29,488 INFO L225 Difference]: With dead ends: 3944 [2021-06-05 07:58:29,488 INFO L226 Difference]: Without dead ends: 3321 [2021-06-05 07:58:29,488 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 381.7ms TimeCoverageRelationStatistics Valid=463, Invalid=1429, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 07:58:29,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3321 states. [2021-06-05 07:58:29,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3321 to 2603. [2021-06-05 07:58:29,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2603 states, 2602 states have (on average 2.800922367409685) internal successors, (7288), 2602 states have internal predecessors, (7288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:29,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2603 states to 2603 states and 7288 transitions. [2021-06-05 07:58:29,512 INFO L78 Accepts]: Start accepts. Automaton has 2603 states and 7288 transitions. Word has length 85 [2021-06-05 07:58:29,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:29,512 INFO L482 AbstractCegarLoop]: Abstraction has 2603 states and 7288 transitions. [2021-06-05 07:58:29,512 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:29,512 INFO L276 IsEmpty]: Start isEmpty. Operand 2603 states and 7288 transitions. [2021-06-05 07:58:29,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-06-05 07:58:29,514 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:29,514 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:29,714 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:29,715 INFO L430 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:29,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:29,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1947707761, now seen corresponding path program 59 times [2021-06-05 07:58:29,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:29,715 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030848881] [2021-06-05 07:58:29,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:29,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:29,800 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:29,800 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:29,800 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030848881] [2021-06-05 07:58:29,800 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030848881] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:29,801 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074132197] [2021-06-05 07:58:29,801 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:29,853 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-06-05 07:58:29,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:29,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 17 conjunts are in the unsatisfiable core [2021-06-05 07:58:29,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:29,959 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:29,959 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074132197] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:29,959 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:29,959 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2021-06-05 07:58:29,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450391919] [2021-06-05 07:58:29,959 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:58:29,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:29,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:58:29,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:58:29,960 INFO L87 Difference]: Start difference. First operand 2603 states and 7288 transitions. Second operand has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:30,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:30,292 INFO L93 Difference]: Finished difference Result 4148 states and 11171 transitions. [2021-06-05 07:58:30,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 07:58:30,292 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-06-05 07:58:30,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:30,296 INFO L225 Difference]: With dead ends: 4148 [2021-06-05 07:58:30,296 INFO L226 Difference]: Without dead ends: 3878 [2021-06-05 07:58:30,297 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 299.7ms TimeCoverageRelationStatistics Valid=489, Invalid=1233, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 07:58:30,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3878 states. [2021-06-05 07:58:30,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3878 to 2783. [2021-06-05 07:58:30,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2783 states, 2782 states have (on average 2.8206326383896476) internal successors, (7847), 2782 states have internal predecessors, (7847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:30,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2783 states to 2783 states and 7847 transitions. [2021-06-05 07:58:30,327 INFO L78 Accepts]: Start accepts. Automaton has 2783 states and 7847 transitions. Word has length 85 [2021-06-05 07:58:30,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:30,327 INFO L482 AbstractCegarLoop]: Abstraction has 2783 states and 7847 transitions. [2021-06-05 07:58:30,327 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:30,327 INFO L276 IsEmpty]: Start isEmpty. Operand 2783 states and 7847 transitions. [2021-06-05 07:58:30,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-06-05 07:58:30,329 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:30,330 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:30,546 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2021-06-05 07:58:30,546 INFO L430 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:30,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:30,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1970051011, now seen corresponding path program 60 times [2021-06-05 07:58:30,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:30,546 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208622756] [2021-06-05 07:58:30,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:30,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:30,629 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:30,629 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:30,629 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208622756] [2021-06-05 07:58:30,629 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208622756] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:30,629 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101187065] [2021-06-05 07:58:30,630 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:30,684 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-06-05 07:58:30,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:30,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-05 07:58:30,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:30,798 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:30,798 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101187065] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:30,798 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:30,798 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-06-05 07:58:30,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474796712] [2021-06-05 07:58:30,799 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:58:30,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:30,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:58:30,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:58:30,799 INFO L87 Difference]: Start difference. First operand 2783 states and 7847 transitions. Second operand has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:31,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:31,253 INFO L93 Difference]: Finished difference Result 4016 states and 10836 transitions. [2021-06-05 07:58:31,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 07:58:31,254 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-06-05 07:58:31,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:31,257 INFO L225 Difference]: With dead ends: 4016 [2021-06-05 07:58:31,257 INFO L226 Difference]: Without dead ends: 3441 [2021-06-05 07:58:31,257 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 524 ImplicationChecksByTransitivity, 412.6ms TimeCoverageRelationStatistics Valid=521, Invalid=1641, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 07:58:31,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3441 states. [2021-06-05 07:58:31,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3441 to 1924. [2021-06-05 07:58:31,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1924 states, 1923 states have (on average 2.733229329173167) internal successors, (5256), 1923 states have internal predecessors, (5256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:31,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1924 states to 1924 states and 5256 transitions. [2021-06-05 07:58:31,278 INFO L78 Accepts]: Start accepts. Automaton has 1924 states and 5256 transitions. Word has length 85 [2021-06-05 07:58:31,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:31,278 INFO L482 AbstractCegarLoop]: Abstraction has 1924 states and 5256 transitions. [2021-06-05 07:58:31,278 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:31,278 INFO L276 IsEmpty]: Start isEmpty. Operand 1924 states and 5256 transitions. [2021-06-05 07:58:31,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-06-05 07:58:31,280 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:31,280 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:31,480 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:31,480 INFO L430 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:31,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:31,481 INFO L82 PathProgramCache]: Analyzing trace with hash 834350121, now seen corresponding path program 61 times [2021-06-05 07:58:31,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:31,481 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295001410] [2021-06-05 07:58:31,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:31,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:31,603 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:31,603 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:31,603 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295001410] [2021-06-05 07:58:31,603 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295001410] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:31,603 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591643000] [2021-06-05 07:58:31,603 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:31,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:31,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjunts are in the unsatisfiable core [2021-06-05 07:58:31,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:31,803 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:31,803 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591643000] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:31,803 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:31,803 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 20 [2021-06-05 07:58:31,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776580040] [2021-06-05 07:58:31,804 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 07:58:31,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:31,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 07:58:31,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2021-06-05 07:58:31,804 INFO L87 Difference]: Start difference. First operand 1924 states and 5256 transitions. Second operand has 20 states, 20 states have (on average 5.9) internal successors, (118), 20 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:32,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:32,086 INFO L93 Difference]: Finished difference Result 2864 states and 7456 transitions. [2021-06-05 07:58:32,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 07:58:32,087 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.9) internal successors, (118), 20 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-06-05 07:58:32,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:32,089 INFO L225 Difference]: With dead ends: 2864 [2021-06-05 07:58:32,089 INFO L226 Difference]: Without dead ends: 2530 [2021-06-05 07:58:32,089 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 307.0ms TimeCoverageRelationStatistics Valid=360, Invalid=1046, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 07:58:32,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2530 states. [2021-06-05 07:58:32,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2530 to 2009. [2021-06-05 07:58:32,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2009 states, 2008 states have (on average 2.702191235059761) internal successors, (5426), 2008 states have internal predecessors, (5426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:32,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 5426 transitions. [2021-06-05 07:58:32,107 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 5426 transitions. Word has length 90 [2021-06-05 07:58:32,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:32,111 INFO L482 AbstractCegarLoop]: Abstraction has 2009 states and 5426 transitions. [2021-06-05 07:58:32,111 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 5.9) internal successors, (118), 20 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:32,111 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 5426 transitions. [2021-06-05 07:58:32,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-06-05 07:58:32,113 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:32,113 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:32,328 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2021-06-05 07:58:32,329 INFO L430 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:32,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:32,329 INFO L82 PathProgramCache]: Analyzing trace with hash -207325971, now seen corresponding path program 62 times [2021-06-05 07:58:32,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:32,329 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742915165] [2021-06-05 07:58:32,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:32,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:32,459 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:32,459 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:32,459 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742915165] [2021-06-05 07:58:32,459 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742915165] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:32,459 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366702690] [2021-06-05 07:58:32,460 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:32,514 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:58:32,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:32,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-05 07:58:32,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:32,621 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:32,621 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366702690] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:32,621 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:32,621 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2021-06-05 07:58:32,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799577630] [2021-06-05 07:58:32,622 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:58:32,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:32,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:58:32,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:58:32,622 INFO L87 Difference]: Start difference. First operand 2009 states and 5426 transitions. Second operand has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:32,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:32,858 INFO L93 Difference]: Finished difference Result 3386 states and 8437 transitions. [2021-06-05 07:58:32,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 07:58:32,859 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-06-05 07:58:32,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:32,862 INFO L225 Difference]: With dead ends: 3386 [2021-06-05 07:58:32,862 INFO L226 Difference]: Without dead ends: 3116 [2021-06-05 07:58:32,862 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 263.8ms TimeCoverageRelationStatistics Valid=260, Invalid=732, Unknown=0, NotChecked=0, Total=992 [2021-06-05 07:58:32,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3116 states. [2021-06-05 07:58:32,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3116 to 2153. [2021-06-05 07:58:32,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2153 states, 2152 states have (on average 2.715148698884758) internal successors, (5843), 2152 states have internal predecessors, (5843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:32,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 5843 transitions. [2021-06-05 07:58:32,884 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 5843 transitions. Word has length 90 [2021-06-05 07:58:32,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:32,884 INFO L482 AbstractCegarLoop]: Abstraction has 2153 states and 5843 transitions. [2021-06-05 07:58:32,885 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:32,885 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 5843 transitions. [2021-06-05 07:58:32,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-06-05 07:58:32,886 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:32,886 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:33,086 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable70 [2021-06-05 07:58:33,087 INFO L430 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:33,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:33,087 INFO L82 PathProgramCache]: Analyzing trace with hash -452403267, now seen corresponding path program 63 times [2021-06-05 07:58:33,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:33,087 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862431447] [2021-06-05 07:58:33,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:33,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:33,197 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:33,198 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:33,198 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862431447] [2021-06-05 07:58:33,198 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862431447] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:33,198 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68776275] [2021-06-05 07:58:33,198 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:33,259 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-06-05 07:58:33,259 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:33,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-05 07:58:33,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:33,374 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:33,374 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68776275] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:33,374 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:33,374 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-06-05 07:58:33,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388233487] [2021-06-05 07:58:33,374 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:58:33,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:33,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:58:33,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:58:33,375 INFO L87 Difference]: Start difference. First operand 2153 states and 5843 transitions. Second operand has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:33,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:33,638 INFO L93 Difference]: Finished difference Result 3346 states and 8432 transitions. [2021-06-05 07:58:33,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 07:58:33,639 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-06-05 07:58:33,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:33,642 INFO L225 Difference]: With dead ends: 3346 [2021-06-05 07:58:33,642 INFO L226 Difference]: Without dead ends: 3076 [2021-06-05 07:58:33,642 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 270.8ms TimeCoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 07:58:33,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3076 states. [2021-06-05 07:58:33,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3076 to 2228. [2021-06-05 07:58:33,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2228 states, 2227 states have (on average 2.724741805118994) internal successors, (6068), 2227 states have internal predecessors, (6068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:33,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2228 states to 2228 states and 6068 transitions. [2021-06-05 07:58:33,663 INFO L78 Accepts]: Start accepts. Automaton has 2228 states and 6068 transitions. Word has length 90 [2021-06-05 07:58:33,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:33,663 INFO L482 AbstractCegarLoop]: Abstraction has 2228 states and 6068 transitions. [2021-06-05 07:58:33,663 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:33,664 INFO L276 IsEmpty]: Start isEmpty. Operand 2228 states and 6068 transitions. [2021-06-05 07:58:33,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-06-05 07:58:33,673 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:33,673 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:33,888 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,67 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:33,889 INFO L430 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:33,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:33,889 INFO L82 PathProgramCache]: Analyzing trace with hash -829253589, now seen corresponding path program 64 times [2021-06-05 07:58:33,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:33,889 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723928559] [2021-06-05 07:58:33,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:33,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:34,013 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:34,013 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:34,013 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723928559] [2021-06-05 07:58:34,013 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723928559] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:34,013 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039367712] [2021-06-05 07:58:34,014 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:34,065 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:58:34,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:34,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-05 07:58:34,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:34,170 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:34,170 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039367712] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:34,170 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:34,170 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2021-06-05 07:58:34,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241833679] [2021-06-05 07:58:34,170 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:58:34,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:34,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:58:34,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:58:34,171 INFO L87 Difference]: Start difference. First operand 2228 states and 6068 transitions. Second operand has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:34,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:34,401 INFO L93 Difference]: Finished difference Result 3396 states and 8607 transitions. [2021-06-05 07:58:34,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-05 07:58:34,401 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-06-05 07:58:34,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:34,404 INFO L225 Difference]: With dead ends: 3396 [2021-06-05 07:58:34,404 INFO L226 Difference]: Without dead ends: 3126 [2021-06-05 07:58:34,404 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 252.2ms TimeCoverageRelationStatistics Valid=273, Invalid=849, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 07:58:34,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3126 states. [2021-06-05 07:58:34,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3126 to 2303. [2021-06-05 07:58:34,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2303 states, 2302 states have (on average 2.7337098175499563) internal successors, (6293), 2302 states have internal predecessors, (6293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:34,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2303 states to 2303 states and 6293 transitions. [2021-06-05 07:58:34,427 INFO L78 Accepts]: Start accepts. Automaton has 2303 states and 6293 transitions. Word has length 90 [2021-06-05 07:58:34,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:34,428 INFO L482 AbstractCegarLoop]: Abstraction has 2303 states and 6293 transitions. [2021-06-05 07:58:34,428 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:34,428 INFO L276 IsEmpty]: Start isEmpty. Operand 2303 states and 6293 transitions. [2021-06-05 07:58:34,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-06-05 07:58:34,429 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:34,429 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:34,630 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:34,630 INFO L430 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:34,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:34,631 INFO L82 PathProgramCache]: Analyzing trace with hash 497501947, now seen corresponding path program 65 times [2021-06-05 07:58:34,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:34,631 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346155317] [2021-06-05 07:58:34,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:34,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:34,747 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:34,748 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:34,748 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346155317] [2021-06-05 07:58:34,748 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346155317] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:34,748 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625797387] [2021-06-05 07:58:34,748 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:34,801 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-06-05 07:58:34,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:34,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-05 07:58:34,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:34,915 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:34,915 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625797387] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:34,915 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:34,915 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-06-05 07:58:34,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836239907] [2021-06-05 07:58:34,915 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:58:34,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:34,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:58:34,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:58:34,916 INFO L87 Difference]: Start difference. First operand 2303 states and 6293 transitions. Second operand has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:35,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:35,234 INFO L93 Difference]: Finished difference Result 3421 states and 8732 transitions. [2021-06-05 07:58:35,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 07:58:35,234 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-06-05 07:58:35,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:35,237 INFO L225 Difference]: With dead ends: 3421 [2021-06-05 07:58:35,237 INFO L226 Difference]: Without dead ends: 3151 [2021-06-05 07:58:35,238 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 315.2ms TimeCoverageRelationStatistics Valid=332, Invalid=1074, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 07:58:35,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3151 states. [2021-06-05 07:58:35,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3151 to 2378. [2021-06-05 07:58:35,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2378 states, 2377 states have (on average 2.7421119057635677) internal successors, (6518), 2377 states have internal predecessors, (6518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:35,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2378 states to 2378 states and 6518 transitions. [2021-06-05 07:58:35,262 INFO L78 Accepts]: Start accepts. Automaton has 2378 states and 6518 transitions. Word has length 90 [2021-06-05 07:58:35,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:35,262 INFO L482 AbstractCegarLoop]: Abstraction has 2378 states and 6518 transitions. [2021-06-05 07:58:35,262 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:35,262 INFO L276 IsEmpty]: Start isEmpty. Operand 2378 states and 6518 transitions. [2021-06-05 07:58:35,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-06-05 07:58:35,264 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:35,264 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:35,468 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73 [2021-06-05 07:58:35,469 INFO L430 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:35,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:35,469 INFO L82 PathProgramCache]: Analyzing trace with hash 951718121, now seen corresponding path program 66 times [2021-06-05 07:58:35,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:35,469 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909572502] [2021-06-05 07:58:35,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:35,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:35,568 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:35,568 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:35,568 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909572502] [2021-06-05 07:58:35,568 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909572502] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:35,568 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050493499] [2021-06-05 07:58:35,569 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:35,628 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-06-05 07:58:35,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:35,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-05 07:58:35,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:35,745 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:35,745 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050493499] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:35,745 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:35,745 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2021-06-05 07:58:35,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763845911] [2021-06-05 07:58:35,745 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:58:35,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:35,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:58:35,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:58:35,746 INFO L87 Difference]: Start difference. First operand 2378 states and 6518 transitions. Second operand has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:36,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:36,007 INFO L93 Difference]: Finished difference Result 3446 states and 8857 transitions. [2021-06-05 07:58:36,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 07:58:36,007 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-06-05 07:58:36,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:36,010 INFO L225 Difference]: With dead ends: 3446 [2021-06-05 07:58:36,010 INFO L226 Difference]: Without dead ends: 3176 [2021-06-05 07:58:36,010 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 248.3ms TimeCoverageRelationStatistics Valid=302, Invalid=958, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 07:58:36,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3176 states. [2021-06-05 07:58:36,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3176 to 2453. [2021-06-05 07:58:36,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2453 states, 2452 states have (on average 2.75) internal successors, (6743), 2452 states have internal predecessors, (6743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:36,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2453 states to 2453 states and 6743 transitions. [2021-06-05 07:58:36,035 INFO L78 Accepts]: Start accepts. Automaton has 2453 states and 6743 transitions. Word has length 90 [2021-06-05 07:58:36,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:36,035 INFO L482 AbstractCegarLoop]: Abstraction has 2453 states and 6743 transitions. [2021-06-05 07:58:36,035 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:36,035 INFO L276 IsEmpty]: Start isEmpty. Operand 2453 states and 6743 transitions. [2021-06-05 07:58:36,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-06-05 07:58:36,037 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:36,037 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:36,237 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:36,238 INFO L430 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:36,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:36,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1950614457, now seen corresponding path program 67 times [2021-06-05 07:58:36,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:36,238 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983815048] [2021-06-05 07:58:36,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:36,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:36,334 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:36,335 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:36,335 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983815048] [2021-06-05 07:58:36,335 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983815048] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:36,335 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162336333] [2021-06-05 07:58:36,335 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:36,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:36,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-05 07:58:36,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:36,498 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:36,498 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162336333] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:36,498 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:36,498 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-06-05 07:58:36,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243321445] [2021-06-05 07:58:36,499 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:58:36,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:36,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:58:36,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:58:36,499 INFO L87 Difference]: Start difference. First operand 2453 states and 6743 transitions. Second operand has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:36,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:36,870 INFO L93 Difference]: Finished difference Result 3471 states and 8982 transitions. [2021-06-05 07:58:36,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 07:58:36,870 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-06-05 07:58:36,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:36,873 INFO L225 Difference]: With dead ends: 3471 [2021-06-05 07:58:36,873 INFO L226 Difference]: Without dead ends: 3201 [2021-06-05 07:58:36,873 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 338.2ms TimeCoverageRelationStatistics Valid=369, Invalid=1191, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 07:58:36,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3201 states. [2021-06-05 07:58:36,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3201 to 2528. [2021-06-05 07:58:36,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2528 states, 2527 states have (on average 2.7574198654531066) internal successors, (6968), 2527 states have internal predecessors, (6968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:36,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2528 states to 2528 states and 6968 transitions. [2021-06-05 07:58:36,900 INFO L78 Accepts]: Start accepts. Automaton has 2528 states and 6968 transitions. Word has length 90 [2021-06-05 07:58:36,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:36,900 INFO L482 AbstractCegarLoop]: Abstraction has 2528 states and 6968 transitions. [2021-06-05 07:58:36,900 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:36,900 INFO L276 IsEmpty]: Start isEmpty. Operand 2528 states and 6968 transitions. [2021-06-05 07:58:36,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-06-05 07:58:36,902 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:36,902 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:37,116 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2021-06-05 07:58:37,117 INFO L430 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:37,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:37,117 INFO L82 PathProgramCache]: Analyzing trace with hash 71286567, now seen corresponding path program 68 times [2021-06-05 07:58:37,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:37,117 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992559666] [2021-06-05 07:58:37,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:37,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:37,220 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:37,220 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:37,220 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992559666] [2021-06-05 07:58:37,221 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992559666] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:37,221 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005922862] [2021-06-05 07:58:37,221 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:37,277 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:58:37,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:37,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-05 07:58:37,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:37,368 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:37,368 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005922862] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:37,368 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:37,368 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2021-06-05 07:58:37,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742887695] [2021-06-05 07:58:37,368 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:58:37,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:37,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:58:37,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:58:37,369 INFO L87 Difference]: Start difference. First operand 2528 states and 6968 transitions. Second operand has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:37,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:37,677 INFO L93 Difference]: Finished difference Result 3496 states and 9107 transitions. [2021-06-05 07:58:37,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 07:58:37,677 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-06-05 07:58:37,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:37,680 INFO L225 Difference]: With dead ends: 3496 [2021-06-05 07:58:37,680 INFO L226 Difference]: Without dead ends: 3226 [2021-06-05 07:58:37,680 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 289.9ms TimeCoverageRelationStatistics Valid=347, Invalid=1059, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 07:58:37,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3226 states. [2021-06-05 07:58:37,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3226 to 2603. [2021-06-05 07:58:37,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2603 states, 2602 states have (on average 2.764411990776326) internal successors, (7193), 2602 states have internal predecessors, (7193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:37,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2603 states to 2603 states and 7193 transitions. [2021-06-05 07:58:37,705 INFO L78 Accepts]: Start accepts. Automaton has 2603 states and 7193 transitions. Word has length 90 [2021-06-05 07:58:37,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:37,706 INFO L482 AbstractCegarLoop]: Abstraction has 2603 states and 7193 transitions. [2021-06-05 07:58:37,706 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:37,706 INFO L276 IsEmpty]: Start isEmpty. Operand 2603 states and 7193 transitions. [2021-06-05 07:58:37,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-06-05 07:58:37,707 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:37,708 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:37,909 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,72 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:37,909 INFO L430 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:37,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:37,909 INFO L82 PathProgramCache]: Analyzing trace with hash 2101605879, now seen corresponding path program 69 times [2021-06-05 07:58:37,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:37,909 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197025477] [2021-06-05 07:58:37,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:37,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:38,002 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:38,002 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:38,002 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197025477] [2021-06-05 07:58:38,003 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197025477] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:38,003 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290756826] [2021-06-05 07:58:38,003 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:38,058 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-06-05 07:58:38,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:38,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 07:58:38,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:38,167 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:38,167 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290756826] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:38,167 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:38,167 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-06-05 07:58:38,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073920745] [2021-06-05 07:58:38,168 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:58:38,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:38,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:58:38,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:58:38,168 INFO L87 Difference]: Start difference. First operand 2603 states and 7193 transitions. Second operand has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:38,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:38,545 INFO L93 Difference]: Finished difference Result 3521 states and 9232 transitions. [2021-06-05 07:58:38,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 07:58:38,545 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-06-05 07:58:38,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:38,548 INFO L225 Difference]: With dead ends: 3521 [2021-06-05 07:58:38,548 INFO L226 Difference]: Without dead ends: 3251 [2021-06-05 07:58:38,548 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 344.0ms TimeCoverageRelationStatistics Valid=356, Invalid=1204, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 07:58:38,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3251 states. [2021-06-05 07:58:38,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3251 to 2678. [2021-06-05 07:58:38,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2678 states, 2677 states have (on average 2.771012327231976) internal successors, (7418), 2677 states have internal predecessors, (7418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:38,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2678 states to 2678 states and 7418 transitions. [2021-06-05 07:58:38,574 INFO L78 Accepts]: Start accepts. Automaton has 2678 states and 7418 transitions. Word has length 90 [2021-06-05 07:58:38,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:38,574 INFO L482 AbstractCegarLoop]: Abstraction has 2678 states and 7418 transitions. [2021-06-05 07:58:38,574 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:38,574 INFO L276 IsEmpty]: Start isEmpty. Operand 2678 states and 7418 transitions. [2021-06-05 07:58:38,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-06-05 07:58:38,576 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:38,576 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:38,776 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2021-06-05 07:58:38,777 INFO L430 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:38,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:38,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1579121947, now seen corresponding path program 70 times [2021-06-05 07:58:38,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:38,777 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405660660] [2021-06-05 07:58:38,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:38,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:38,870 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:38,870 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:38,870 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405660660] [2021-06-05 07:58:38,870 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405660660] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:38,870 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794995471] [2021-06-05 07:58:38,870 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:38,922 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:58:38,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:38,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-05 07:58:38,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:39,020 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:39,020 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794995471] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:39,020 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:39,020 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2021-06-05 07:58:39,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192708476] [2021-06-05 07:58:39,020 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:58:39,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:39,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:58:39,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:58:39,021 INFO L87 Difference]: Start difference. First operand 2678 states and 7418 transitions. Second operand has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:39,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:39,343 INFO L93 Difference]: Finished difference Result 3591 states and 9477 transitions. [2021-06-05 07:58:39,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 07:58:39,343 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-06-05 07:58:39,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:39,347 INFO L225 Difference]: With dead ends: 3591 [2021-06-05 07:58:39,347 INFO L226 Difference]: Without dead ends: 3321 [2021-06-05 07:58:39,347 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 292.0ms TimeCoverageRelationStatistics Valid=408, Invalid=1152, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 07:58:39,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3321 states. [2021-06-05 07:58:39,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3321 to 2753. [2021-06-05 07:58:39,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2753 states, 2752 states have (on average 2.782703488372093) internal successors, (7658), 2752 states have internal predecessors, (7658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:39,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2753 states to 2753 states and 7658 transitions. [2021-06-05 07:58:39,385 INFO L78 Accepts]: Start accepts. Automaton has 2753 states and 7658 transitions. Word has length 90 [2021-06-05 07:58:39,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:39,385 INFO L482 AbstractCegarLoop]: Abstraction has 2753 states and 7658 transitions. [2021-06-05 07:58:39,385 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:39,385 INFO L276 IsEmpty]: Start isEmpty. Operand 2753 states and 7658 transitions. [2021-06-05 07:58:39,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-06-05 07:58:39,387 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:39,387 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:39,587 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:39,588 INFO L430 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:39,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:39,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1000603061, now seen corresponding path program 71 times [2021-06-05 07:58:39,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:39,588 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395931606] [2021-06-05 07:58:39,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:39,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:39,683 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:39,684 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:39,684 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395931606] [2021-06-05 07:58:39,684 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395931606] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:39,684 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094563837] [2021-06-05 07:58:39,684 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:39,738 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-06-05 07:58:39,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:39,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-05 07:58:39,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:39,838 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:39,838 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094563837] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:39,838 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:39,838 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-06-05 07:58:39,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378238806] [2021-06-05 07:58:39,839 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:58:39,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:39,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:58:39,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:58:39,839 INFO L87 Difference]: Start difference. First operand 2753 states and 7658 transitions. Second operand has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:40,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:40,345 INFO L93 Difference]: Finished difference Result 4169 states and 11103 transitions. [2021-06-05 07:58:40,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 07:58:40,345 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-06-05 07:58:40,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:40,349 INFO L225 Difference]: With dead ends: 4169 [2021-06-05 07:58:40,349 INFO L226 Difference]: Without dead ends: 3546 [2021-06-05 07:58:40,350 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 435.3ms TimeCoverageRelationStatistics Valid=512, Invalid=1558, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 07:58:40,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3546 states. [2021-06-05 07:58:40,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3546 to 2828. [2021-06-05 07:58:40,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2828 states, 2827 states have (on average 2.790237000353732) internal successors, (7888), 2827 states have internal predecessors, (7888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:40,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2828 states to 2828 states and 7888 transitions. [2021-06-05 07:58:40,378 INFO L78 Accepts]: Start accepts. Automaton has 2828 states and 7888 transitions. Word has length 90 [2021-06-05 07:58:40,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:40,378 INFO L482 AbstractCegarLoop]: Abstraction has 2828 states and 7888 transitions. [2021-06-05 07:58:40,378 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:40,378 INFO L276 IsEmpty]: Start isEmpty. Operand 2828 states and 7888 transitions. [2021-06-05 07:58:40,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-06-05 07:58:40,380 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:40,380 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:40,581 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2021-06-05 07:58:40,581 INFO L430 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:40,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:40,581 INFO L82 PathProgramCache]: Analyzing trace with hash -32044541, now seen corresponding path program 72 times [2021-06-05 07:58:40,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:40,581 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261928592] [2021-06-05 07:58:40,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:40,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:40,677 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:40,677 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:40,677 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261928592] [2021-06-05 07:58:40,677 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261928592] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:40,677 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436523752] [2021-06-05 07:58:40,678 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:40,734 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-06-05 07:58:40,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:40,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjunts are in the unsatisfiable core [2021-06-05 07:58:40,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:40,825 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:40,825 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436523752] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:40,825 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:40,826 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2021-06-05 07:58:40,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983335729] [2021-06-05 07:58:40,826 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 07:58:40,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:40,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 07:58:40,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:58:40,826 INFO L87 Difference]: Start difference. First operand 2828 states and 7888 transitions. Second operand has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:41,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:41,178 INFO L93 Difference]: Finished difference Result 4398 states and 11821 transitions. [2021-06-05 07:58:41,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 07:58:41,179 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-06-05 07:58:41,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:41,183 INFO L225 Difference]: With dead ends: 4398 [2021-06-05 07:58:41,183 INFO L226 Difference]: Without dead ends: 4128 [2021-06-05 07:58:41,183 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 313.9ms TimeCoverageRelationStatistics Valid=486, Invalid=1236, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 07:58:41,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4128 states. [2021-06-05 07:58:41,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4128 to 3008. [2021-06-05 07:58:41,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3008 states, 3007 states have (on average 2.809112071832391) internal successors, (8447), 3007 states have internal predecessors, (8447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:41,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3008 states to 3008 states and 8447 transitions. [2021-06-05 07:58:41,224 INFO L78 Accepts]: Start accepts. Automaton has 3008 states and 8447 transitions. Word has length 90 [2021-06-05 07:58:41,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:41,224 INFO L482 AbstractCegarLoop]: Abstraction has 3008 states and 8447 transitions. [2021-06-05 07:58:41,224 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:41,224 INFO L276 IsEmpty]: Start isEmpty. Operand 3008 states and 8447 transitions. [2021-06-05 07:58:41,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-06-05 07:58:41,226 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:41,226 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:41,426 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:41,427 INFO L430 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:41,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:41,427 INFO L82 PathProgramCache]: Analyzing trace with hash -9701291, now seen corresponding path program 73 times [2021-06-05 07:58:41,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:41,427 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073343531] [2021-06-05 07:58:41,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:41,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:41,519 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:41,519 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:41,519 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073343531] [2021-06-05 07:58:41,519 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073343531] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:41,519 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340879985] [2021-06-05 07:58:41,519 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:41,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:41,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-05 07:58:41,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:41,682 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:41,682 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340879985] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:41,682 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:41,682 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-06-05 07:58:41,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802493564] [2021-06-05 07:58:41,682 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:58:41,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:41,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:58:41,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:58:41,683 INFO L87 Difference]: Start difference. First operand 3008 states and 8447 transitions. Second operand has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:42,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:42,158 INFO L93 Difference]: Finished difference Result 3885 states and 10521 transitions. [2021-06-05 07:58:42,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 07:58:42,158 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-06-05 07:58:42,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:42,162 INFO L225 Difference]: With dead ends: 3885 [2021-06-05 07:58:42,162 INFO L226 Difference]: Without dead ends: 3306 [2021-06-05 07:58:42,162 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 483 ImplicationChecksByTransitivity, 438.1ms TimeCoverageRelationStatistics Valid=579, Invalid=1491, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 07:58:42,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3306 states. [2021-06-05 07:58:42,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3306 to 2113. [2021-06-05 07:58:42,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2113 states, 2112 states have (on average 2.7357954545454546) internal successors, (5778), 2112 states have internal predecessors, (5778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:42,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2113 states to 2113 states and 5778 transitions. [2021-06-05 07:58:42,184 INFO L78 Accepts]: Start accepts. Automaton has 2113 states and 5778 transitions. Word has length 90 [2021-06-05 07:58:42,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:42,184 INFO L482 AbstractCegarLoop]: Abstraction has 2113 states and 5778 transitions. [2021-06-05 07:58:42,184 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:42,184 INFO L276 IsEmpty]: Start isEmpty. Operand 2113 states and 5778 transitions. [2021-06-05 07:58:42,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-06-05 07:58:42,185 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:42,185 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:42,386 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:42,386 INFO L430 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:42,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:42,386 INFO L82 PathProgramCache]: Analyzing trace with hash -567911574, now seen corresponding path program 74 times [2021-06-05 07:58:42,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:42,386 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098111823] [2021-06-05 07:58:42,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:42,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:42,499 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:42,499 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:42,499 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098111823] [2021-06-05 07:58:42,499 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098111823] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:42,499 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513663570] [2021-06-05 07:58:42,499 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:42,561 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:58:42,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:42,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 19 conjunts are in the unsatisfiable core [2021-06-05 07:58:42,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:42,657 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:42,657 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513663570] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:42,658 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:42,658 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2021-06-05 07:58:42,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252760658] [2021-06-05 07:58:42,658 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:58:42,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:42,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:58:42,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:58:42,658 INFO L87 Difference]: Start difference. First operand 2113 states and 5778 transitions. Second operand has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:42,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:42,896 INFO L93 Difference]: Finished difference Result 3131 states and 8017 transitions. [2021-06-05 07:58:42,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 07:58:42,897 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-06-05 07:58:42,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:42,899 INFO L225 Difference]: With dead ends: 3131 [2021-06-05 07:58:42,899 INFO L226 Difference]: Without dead ends: 2861 [2021-06-05 07:58:42,900 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 247.8ms TimeCoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 07:58:42,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2861 states. [2021-06-05 07:58:42,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2861 to 2188. [2021-06-05 07:58:42,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2188 states, 2187 states have (on average 2.7448559670781894) internal successors, (6003), 2187 states have internal predecessors, (6003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:42,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2188 states to 2188 states and 6003 transitions. [2021-06-05 07:58:42,921 INFO L78 Accepts]: Start accepts. Automaton has 2188 states and 6003 transitions. Word has length 95 [2021-06-05 07:58:42,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:42,921 INFO L482 AbstractCegarLoop]: Abstraction has 2188 states and 6003 transitions. [2021-06-05 07:58:42,921 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:42,921 INFO L276 IsEmpty]: Start isEmpty. Operand 2188 states and 6003 transitions. [2021-06-05 07:58:42,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-06-05 07:58:42,922 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:42,922 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:43,123 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,78 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:43,123 INFO L430 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:43,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:43,123 INFO L82 PathProgramCache]: Analyzing trace with hash -812988870, now seen corresponding path program 75 times [2021-06-05 07:58:43,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:43,123 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672911016] [2021-06-05 07:58:43,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:43,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:43,257 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:43,257 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:43,257 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672911016] [2021-06-05 07:58:43,257 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672911016] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:43,257 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888379957] [2021-06-05 07:58:43,258 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:43,314 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-06-05 07:58:43,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:43,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 19 conjunts are in the unsatisfiable core [2021-06-05 07:58:43,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:43,437 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:43,437 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888379957] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:43,437 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:43,437 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-06-05 07:58:43,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682988300] [2021-06-05 07:58:43,437 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 07:58:43,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:43,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 07:58:43,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2021-06-05 07:58:43,438 INFO L87 Difference]: Start difference. First operand 2188 states and 6003 transitions. Second operand has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:43,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:43,750 INFO L93 Difference]: Finished difference Result 3451 states and 8732 transitions. [2021-06-05 07:58:43,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 07:58:43,750 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-06-05 07:58:43,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:43,753 INFO L225 Difference]: With dead ends: 3451 [2021-06-05 07:58:43,753 INFO L226 Difference]: Without dead ends: 3181 [2021-06-05 07:58:43,753 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 311.5ms TimeCoverageRelationStatistics Valid=355, Invalid=1127, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 07:58:43,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3181 states. [2021-06-05 07:58:43,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3181 to 2263. [2021-06-05 07:58:43,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2263 states, 2262 states have (on average 2.753315649867374) internal successors, (6228), 2262 states have internal predecessors, (6228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:43,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2263 states to 2263 states and 6228 transitions. [2021-06-05 07:58:43,778 INFO L78 Accepts]: Start accepts. Automaton has 2263 states and 6228 transitions. Word has length 95 [2021-06-05 07:58:43,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:43,778 INFO L482 AbstractCegarLoop]: Abstraction has 2263 states and 6228 transitions. [2021-06-05 07:58:43,779 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:43,779 INFO L276 IsEmpty]: Start isEmpty. Operand 2263 states and 6228 transitions. [2021-06-05 07:58:43,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-06-05 07:58:43,780 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:43,780 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:43,980 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,79 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:43,981 INFO L430 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:43,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:43,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1189839192, now seen corresponding path program 76 times [2021-06-05 07:58:43,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:43,981 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307408623] [2021-06-05 07:58:43,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:43,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:44,091 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:44,092 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:44,092 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307408623] [2021-06-05 07:58:44,092 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307408623] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:44,092 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780582535] [2021-06-05 07:58:44,092 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:44,143 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:58:44,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:44,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 19 conjunts are in the unsatisfiable core [2021-06-05 07:58:44,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:44,256 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:44,258 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780582535] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:44,258 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:44,258 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2021-06-05 07:58:44,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965391314] [2021-06-05 07:58:44,258 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:58:44,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:44,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:58:44,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:58:44,258 INFO L87 Difference]: Start difference. First operand 2263 states and 6228 transitions. Second operand has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:44,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:44,533 INFO L93 Difference]: Finished difference Result 3481 states and 8867 transitions. [2021-06-05 07:58:44,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 07:58:44,533 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-06-05 07:58:44,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:44,537 INFO L225 Difference]: With dead ends: 3481 [2021-06-05 07:58:44,537 INFO L226 Difference]: Without dead ends: 3211 [2021-06-05 07:58:44,537 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 273.5ms TimeCoverageRelationStatistics Valid=361, Invalid=1121, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 07:58:44,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3211 states. [2021-06-05 07:58:44,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3211 to 2338. [2021-06-05 07:58:44,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2338 states, 2337 states have (on average 2.761232349165597) internal successors, (6453), 2337 states have internal predecessors, (6453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:44,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2338 states to 2338 states and 6453 transitions. [2021-06-05 07:58:44,566 INFO L78 Accepts]: Start accepts. Automaton has 2338 states and 6453 transitions. Word has length 95 [2021-06-05 07:58:44,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:44,567 INFO L482 AbstractCegarLoop]: Abstraction has 2338 states and 6453 transitions. [2021-06-05 07:58:44,567 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:44,567 INFO L276 IsEmpty]: Start isEmpty. Operand 2338 states and 6453 transitions. [2021-06-05 07:58:44,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-06-05 07:58:44,568 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:44,568 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:44,769 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:44,769 INFO L430 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:44,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:44,769 INFO L82 PathProgramCache]: Analyzing trace with hash 136916344, now seen corresponding path program 77 times [2021-06-05 07:58:44,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:44,769 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65566962] [2021-06-05 07:58:44,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:44,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:44,888 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:44,888 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:44,888 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65566962] [2021-06-05 07:58:44,888 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65566962] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:44,888 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421731380] [2021-06-05 07:58:44,888 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:44,964 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-06-05 07:58:44,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:44,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 19 conjunts are in the unsatisfiable core [2021-06-05 07:58:44,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:45,101 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:45,101 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421731380] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:45,102 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:45,102 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-06-05 07:58:45,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842902697] [2021-06-05 07:58:45,102 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 07:58:45,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:45,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 07:58:45,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-06-05 07:58:45,103 INFO L87 Difference]: Start difference. First operand 2338 states and 6453 transitions. Second operand has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:45,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:45,471 INFO L93 Difference]: Finished difference Result 3506 states and 8992 transitions. [2021-06-05 07:58:45,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 07:58:45,471 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-06-05 07:58:45,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:45,474 INFO L225 Difference]: With dead ends: 3506 [2021-06-05 07:58:45,475 INFO L226 Difference]: Without dead ends: 3236 [2021-06-05 07:58:45,475 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 350.5ms TimeCoverageRelationStatistics Valid=383, Invalid=1257, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 07:58:45,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3236 states. [2021-06-05 07:58:45,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3236 to 2413. [2021-06-05 07:58:45,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2413 states, 2412 states have (on average 2.7686567164179103) internal successors, (6678), 2412 states have internal predecessors, (6678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:45,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2413 states to 2413 states and 6678 transitions. [2021-06-05 07:58:45,503 INFO L78 Accepts]: Start accepts. Automaton has 2413 states and 6678 transitions. Word has length 95 [2021-06-05 07:58:45,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:45,503 INFO L482 AbstractCegarLoop]: Abstraction has 2413 states and 6678 transitions. [2021-06-05 07:58:45,503 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:45,503 INFO L276 IsEmpty]: Start isEmpty. Operand 2413 states and 6678 transitions. [2021-06-05 07:58:45,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-06-05 07:58:45,505 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:45,505 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:45,712 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,81 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:45,713 INFO L430 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:45,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:45,713 INFO L82 PathProgramCache]: Analyzing trace with hash 591132518, now seen corresponding path program 78 times [2021-06-05 07:58:45,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:45,713 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364862235] [2021-06-05 07:58:45,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:45,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:45,815 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:45,816 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:45,816 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364862235] [2021-06-05 07:58:45,816 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364862235] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:45,816 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134808192] [2021-06-05 07:58:45,816 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:45,872 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-06-05 07:58:45,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:45,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 19 conjunts are in the unsatisfiable core [2021-06-05 07:58:45,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:45,981 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:45,982 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134808192] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:45,982 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:45,982 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2021-06-05 07:58:45,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404025724] [2021-06-05 07:58:45,982 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:58:45,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:45,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:58:45,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:58:45,982 INFO L87 Difference]: Start difference. First operand 2413 states and 6678 transitions. Second operand has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:46,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:46,326 INFO L93 Difference]: Finished difference Result 3531 states and 9117 transitions. [2021-06-05 07:58:46,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 07:58:46,326 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-06-05 07:58:46,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:46,329 INFO L225 Difference]: With dead ends: 3531 [2021-06-05 07:58:46,329 INFO L226 Difference]: Without dead ends: 3261 [2021-06-05 07:58:46,330 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 322.0ms TimeCoverageRelationStatistics Valid=403, Invalid=1237, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 07:58:46,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3261 states. [2021-06-05 07:58:46,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3261 to 2488. [2021-06-05 07:58:46,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2488 states, 2487 states have (on average 2.7756332931242462) internal successors, (6903), 2487 states have internal predecessors, (6903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:46,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2488 states to 2488 states and 6903 transitions. [2021-06-05 07:58:46,357 INFO L78 Accepts]: Start accepts. Automaton has 2488 states and 6903 transitions. Word has length 95 [2021-06-05 07:58:46,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:46,358 INFO L482 AbstractCegarLoop]: Abstraction has 2488 states and 6903 transitions. [2021-06-05 07:58:46,358 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:46,358 INFO L276 IsEmpty]: Start isEmpty. Operand 2488 states and 6903 transitions. [2021-06-05 07:58:46,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-06-05 07:58:46,359 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:46,359 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:46,560 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:46,560 INFO L430 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:46,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:46,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1590028854, now seen corresponding path program 79 times [2021-06-05 07:58:46,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:46,560 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36174277] [2021-06-05 07:58:46,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:46,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:46,677 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:46,678 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:46,678 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36174277] [2021-06-05 07:58:46,678 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36174277] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:46,678 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532284359] [2021-06-05 07:58:46,678 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:46,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:46,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 19 conjunts are in the unsatisfiable core [2021-06-05 07:58:46,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:46,862 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:46,862 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532284359] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:46,862 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:46,862 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-06-05 07:58:46,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644011371] [2021-06-05 07:58:46,862 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 07:58:46,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:46,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 07:58:46,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2021-06-05 07:58:46,863 INFO L87 Difference]: Start difference. First operand 2488 states and 6903 transitions. Second operand has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:47,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:47,286 INFO L93 Difference]: Finished difference Result 3556 states and 9242 transitions. [2021-06-05 07:58:47,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 07:58:47,286 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-06-05 07:58:47,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:47,289 INFO L225 Difference]: With dead ends: 3556 [2021-06-05 07:58:47,289 INFO L226 Difference]: Without dead ends: 3286 [2021-06-05 07:58:47,289 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 409.1ms TimeCoverageRelationStatistics Valid=427, Invalid=1379, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 07:58:47,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3286 states. [2021-06-05 07:58:47,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3286 to 2563. [2021-06-05 07:58:47,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2563 states, 2562 states have (on average 2.782201405152225) internal successors, (7128), 2562 states have internal predecessors, (7128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:47,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2563 states to 2563 states and 7128 transitions. [2021-06-05 07:58:47,318 INFO L78 Accepts]: Start accepts. Automaton has 2563 states and 7128 transitions. Word has length 95 [2021-06-05 07:58:47,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:47,318 INFO L482 AbstractCegarLoop]: Abstraction has 2563 states and 7128 transitions. [2021-06-05 07:58:47,318 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:47,318 INFO L276 IsEmpty]: Start isEmpty. Operand 2563 states and 7128 transitions. [2021-06-05 07:58:47,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-06-05 07:58:47,320 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:47,320 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:47,521 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2021-06-05 07:58:47,521 INFO L430 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:47,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:47,522 INFO L82 PathProgramCache]: Analyzing trace with hash -289299036, now seen corresponding path program 80 times [2021-06-05 07:58:47,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:47,522 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262073563] [2021-06-05 07:58:47,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:47,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:47,622 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:47,622 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:47,622 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262073563] [2021-06-05 07:58:47,622 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262073563] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:47,622 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357734804] [2021-06-05 07:58:47,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:47,681 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:58:47,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:47,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 19 conjunts are in the unsatisfiable core [2021-06-05 07:58:47,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:47,775 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:47,775 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357734804] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:47,775 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:47,775 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2021-06-05 07:58:47,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033013258] [2021-06-05 07:58:47,775 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:58:47,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:47,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:58:47,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:58:47,776 INFO L87 Difference]: Start difference. First operand 2563 states and 7128 transitions. Second operand has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:48,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:48,105 INFO L93 Difference]: Finished difference Result 3581 states and 9367 transitions. [2021-06-05 07:58:48,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 07:58:48,106 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-06-05 07:58:48,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:48,109 INFO L225 Difference]: With dead ends: 3581 [2021-06-05 07:58:48,109 INFO L226 Difference]: Without dead ends: 3311 [2021-06-05 07:58:48,109 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 304.1ms TimeCoverageRelationStatistics Valid=461, Invalid=1345, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 07:58:48,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3311 states. [2021-06-05 07:58:48,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3311 to 2638. [2021-06-05 07:58:48,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2638 states, 2637 states have (on average 2.78839590443686) internal successors, (7353), 2637 states have internal predecessors, (7353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:48,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2638 states to 2638 states and 7353 transitions. [2021-06-05 07:58:48,136 INFO L78 Accepts]: Start accepts. Automaton has 2638 states and 7353 transitions. Word has length 95 [2021-06-05 07:58:48,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:48,136 INFO L482 AbstractCegarLoop]: Abstraction has 2638 states and 7353 transitions. [2021-06-05 07:58:48,137 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:48,137 INFO L276 IsEmpty]: Start isEmpty. Operand 2638 states and 7353 transitions. [2021-06-05 07:58:48,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-06-05 07:58:48,138 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:48,138 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:48,339 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,84 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:48,339 INFO L430 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:48,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:48,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1741020276, now seen corresponding path program 81 times [2021-06-05 07:58:48,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:48,339 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80955544] [2021-06-05 07:58:48,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:48,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:48,462 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:48,463 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:48,463 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80955544] [2021-06-05 07:58:48,463 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80955544] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:48,463 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952010837] [2021-06-05 07:58:48,463 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:48,519 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-06-05 07:58:48,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:48,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 07:58:48,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:48,664 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:48,664 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952010837] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:48,664 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:48,664 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-06-05 07:58:48,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543330955] [2021-06-05 07:58:48,665 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 07:58:48,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:48,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 07:58:48,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-06-05 07:58:48,665 INFO L87 Difference]: Start difference. First operand 2638 states and 7353 transitions. Second operand has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:49,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:49,126 INFO L93 Difference]: Finished difference Result 3606 states and 9492 transitions. [2021-06-05 07:58:49,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 07:58:49,126 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-06-05 07:58:49,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:49,129 INFO L225 Difference]: With dead ends: 3606 [2021-06-05 07:58:49,130 INFO L226 Difference]: Without dead ends: 3336 [2021-06-05 07:58:49,130 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 423.7ms TimeCoverageRelationStatistics Valid=466, Invalid=1514, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 07:58:49,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3336 states. [2021-06-05 07:58:49,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3336 to 2713. [2021-06-05 07:58:49,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2713 states, 2712 states have (on average 2.7942477876106193) internal successors, (7578), 2712 states have internal predecessors, (7578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:49,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2713 states to 2713 states and 7578 transitions. [2021-06-05 07:58:49,159 INFO L78 Accepts]: Start accepts. Automaton has 2713 states and 7578 transitions. Word has length 95 [2021-06-05 07:58:49,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:49,159 INFO L482 AbstractCegarLoop]: Abstraction has 2713 states and 7578 transitions. [2021-06-05 07:58:49,159 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:49,159 INFO L276 IsEmpty]: Start isEmpty. Operand 2713 states and 7578 transitions. [2021-06-05 07:58:49,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-06-05 07:58:49,161 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:49,161 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:49,361 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2021-06-05 07:58:49,361 INFO L430 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:49,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:49,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1939707550, now seen corresponding path program 82 times [2021-06-05 07:58:49,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:49,362 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345047365] [2021-06-05 07:58:49,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:49,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:49,462 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:49,462 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:49,462 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345047365] [2021-06-05 07:58:49,463 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345047365] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:49,463 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790210] [2021-06-05 07:58:49,463 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:49,514 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:58:49,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:49,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 19 conjunts are in the unsatisfiable core [2021-06-05 07:58:49,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:49,616 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:49,617 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790210] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:49,617 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:49,617 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2021-06-05 07:58:49,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466486268] [2021-06-05 07:58:49,617 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:58:49,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:49,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:58:49,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:58:49,617 INFO L87 Difference]: Start difference. First operand 2713 states and 7578 transitions. Second operand has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:50,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:50,011 INFO L93 Difference]: Finished difference Result 3631 states and 9617 transitions. [2021-06-05 07:58:50,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 07:58:50,012 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-06-05 07:58:50,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:50,015 INFO L225 Difference]: With dead ends: 3631 [2021-06-05 07:58:50,015 INFO L226 Difference]: Without dead ends: 3361 [2021-06-05 07:58:50,015 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 497 ImplicationChecksByTransitivity, 355.2ms TimeCoverageRelationStatistics Valid=535, Invalid=1445, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 07:58:50,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3361 states. [2021-06-05 07:58:50,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3361 to 2788. [2021-06-05 07:58:50,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2788 states, 2787 states have (on average 2.79978471474704) internal successors, (7803), 2787 states have internal predecessors, (7803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:50,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2788 states to 2788 states and 7803 transitions. [2021-06-05 07:58:50,042 INFO L78 Accepts]: Start accepts. Automaton has 2788 states and 7803 transitions. Word has length 95 [2021-06-05 07:58:50,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:50,042 INFO L482 AbstractCegarLoop]: Abstraction has 2788 states and 7803 transitions. [2021-06-05 07:58:50,042 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:50,042 INFO L276 IsEmpty]: Start isEmpty. Operand 2788 states and 7803 transitions. [2021-06-05 07:58:50,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-06-05 07:58:50,044 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:50,044 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:50,244 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:50,245 INFO L430 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:50,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:50,245 INFO L82 PathProgramCache]: Analyzing trace with hash 640017458, now seen corresponding path program 83 times [2021-06-05 07:58:50,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:50,245 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317372832] [2021-06-05 07:58:50,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:50,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:50,348 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:50,349 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:50,349 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317372832] [2021-06-05 07:58:50,349 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317372832] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:50,349 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412097621] [2021-06-05 07:58:50,349 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:50,402 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-06-05 07:58:50,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:50,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 19 conjunts are in the unsatisfiable core [2021-06-05 07:58:50,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:50,541 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:50,541 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412097621] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:50,541 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:50,541 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-06-05 07:58:50,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177833523] [2021-06-05 07:58:50,541 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 07:58:50,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:50,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 07:58:50,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2021-06-05 07:58:50,542 INFO L87 Difference]: Start difference. First operand 2788 states and 7803 transitions. Second operand has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:51,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:51,019 INFO L93 Difference]: Finished difference Result 3716 states and 9907 transitions. [2021-06-05 07:58:51,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 07:58:51,019 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-06-05 07:58:51,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:51,022 INFO L225 Difference]: With dead ends: 3716 [2021-06-05 07:58:51,022 INFO L226 Difference]: Without dead ends: 3446 [2021-06-05 07:58:51,022 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 520 ImplicationChecksByTransitivity, 434.7ms TimeCoverageRelationStatistics Valid=563, Invalid=1599, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 07:58:51,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3446 states. [2021-06-05 07:58:51,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3446 to 2863. [2021-06-05 07:58:51,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2863 states, 2862 states have (on average 2.8120195667365477) internal successors, (8048), 2862 states have internal predecessors, (8048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:51,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2863 states to 2863 states and 8048 transitions. [2021-06-05 07:58:51,050 INFO L78 Accepts]: Start accepts. Automaton has 2863 states and 8048 transitions. Word has length 95 [2021-06-05 07:58:51,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:51,050 INFO L482 AbstractCegarLoop]: Abstraction has 2863 states and 8048 transitions. [2021-06-05 07:58:51,050 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:51,050 INFO L276 IsEmpty]: Start isEmpty. Operand 2863 states and 8048 transitions. [2021-06-05 07:58:51,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-06-05 07:58:51,052 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:51,052 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:51,253 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,87 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:51,253 INFO L430 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:51,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:51,253 INFO L82 PathProgramCache]: Analyzing trace with hash -392630144, now seen corresponding path program 84 times [2021-06-05 07:58:51,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:51,253 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040437008] [2021-06-05 07:58:51,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:51,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:51,352 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:51,352 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:51,352 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040437008] [2021-06-05 07:58:51,352 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040437008] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:51,352 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773563714] [2021-06-05 07:58:51,352 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:51,408 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-06-05 07:58:51,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:51,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 07:58:51,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:51,510 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:51,511 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773563714] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:51,511 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:51,511 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2021-06-05 07:58:51,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194951486] [2021-06-05 07:58:51,511 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:58:51,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:51,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:58:51,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:58:51,511 INFO L87 Difference]: Start difference. First operand 2863 states and 8048 transitions. Second operand has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:51,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:51,918 INFO L93 Difference]: Finished difference Result 4458 states and 12031 transitions. [2021-06-05 07:58:51,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 07:58:51,918 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-06-05 07:58:51,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:51,922 INFO L225 Difference]: With dead ends: 4458 [2021-06-05 07:58:51,922 INFO L226 Difference]: Without dead ends: 4188 [2021-06-05 07:58:51,923 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 569 ImplicationChecksByTransitivity, 357.2ms TimeCoverageRelationStatistics Valid=626, Invalid=1536, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 07:58:51,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4188 states. [2021-06-05 07:58:51,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4188 to 3043. [2021-06-05 07:58:51,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3043 states, 3042 states have (on average 2.829388560157791) internal successors, (8607), 3042 states have internal predecessors, (8607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:51,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3043 states to 3043 states and 8607 transitions. [2021-06-05 07:58:51,954 INFO L78 Accepts]: Start accepts. Automaton has 3043 states and 8607 transitions. Word has length 95 [2021-06-05 07:58:51,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:51,954 INFO L482 AbstractCegarLoop]: Abstraction has 3043 states and 8607 transitions. [2021-06-05 07:58:51,954 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:51,954 INFO L276 IsEmpty]: Start isEmpty. Operand 3043 states and 8607 transitions. [2021-06-05 07:58:51,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-06-05 07:58:51,956 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:51,956 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:52,156 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,88 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:52,156 INFO L430 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:52,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:52,156 INFO L82 PathProgramCache]: Analyzing trace with hash -370286894, now seen corresponding path program 85 times [2021-06-05 07:58:52,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:52,156 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727066729] [2021-06-05 07:58:52,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:52,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:52,257 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:52,257 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:52,257 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727066729] [2021-06-05 07:58:52,257 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727066729] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:52,257 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687830486] [2021-06-05 07:58:52,257 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:52,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:52,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 19 conjunts are in the unsatisfiable core [2021-06-05 07:58:52,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:52,435 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:52,436 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687830486] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:52,436 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:52,436 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-06-05 07:58:52,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231092763] [2021-06-05 07:58:52,436 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 07:58:52,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:52,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 07:58:52,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2021-06-05 07:58:52,436 INFO L87 Difference]: Start difference. First operand 3043 states and 8607 transitions. Second operand has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:52,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:52,924 INFO L93 Difference]: Finished difference Result 3920 states and 10681 transitions. [2021-06-05 07:58:52,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 07:58:52,925 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-06-05 07:58:52,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:52,929 INFO L225 Difference]: With dead ends: 3920 [2021-06-05 07:58:52,929 INFO L226 Difference]: Without dead ends: 3431 [2021-06-05 07:58:52,929 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 455.2ms TimeCoverageRelationStatistics Valid=658, Invalid=1694, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 07:58:52,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3431 states. [2021-06-05 07:58:52,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3431 to 2034. [2021-06-05 07:58:52,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2034 states, 2033 states have (on average 2.73782587309395) internal successors, (5566), 2033 states have internal predecessors, (5566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:52,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2034 states to 2034 states and 5566 transitions. [2021-06-05 07:58:52,953 INFO L78 Accepts]: Start accepts. Automaton has 2034 states and 5566 transitions. Word has length 95 [2021-06-05 07:58:52,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:52,953 INFO L482 AbstractCegarLoop]: Abstraction has 2034 states and 5566 transitions. [2021-06-05 07:58:52,953 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:52,953 INFO L276 IsEmpty]: Start isEmpty. Operand 2034 states and 5566 transitions. [2021-06-05 07:58:52,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-06-05 07:58:52,955 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:52,955 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:53,155 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:53,155 INFO L430 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:53,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:53,156 INFO L82 PathProgramCache]: Analyzing trace with hash -2121147398, now seen corresponding path program 86 times [2021-06-05 07:58:53,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:53,156 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892735769] [2021-06-05 07:58:53,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:53,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:53,296 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:53,297 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:53,297 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892735769] [2021-06-05 07:58:53,297 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892735769] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:53,297 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539794457] [2021-06-05 07:58:53,297 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:53,351 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:58:53,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:53,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2021-06-05 07:58:53,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:53,489 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:53,489 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539794457] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:53,489 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:53,489 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2021-06-05 07:58:53,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227781263] [2021-06-05 07:58:53,489 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 07:58:53,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:53,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 07:58:53,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2021-06-05 07:58:53,490 INFO L87 Difference]: Start difference. First operand 2034 states and 5566 transitions. Second operand has 22 states, 22 states have (on average 5.818181818181818) internal successors, (128), 22 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:53,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:53,792 INFO L93 Difference]: Finished difference Result 3024 states and 7866 transitions. [2021-06-05 07:58:53,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 07:58:53,793 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.818181818181818) internal successors, (128), 22 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-06-05 07:58:53,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:53,795 INFO L225 Difference]: With dead ends: 3024 [2021-06-05 07:58:53,795 INFO L226 Difference]: Without dead ends: 2690 [2021-06-05 07:58:53,795 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 339.5ms TimeCoverageRelationStatistics Valid=445, Invalid=1277, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 07:58:53,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2690 states. [2021-06-05 07:58:53,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2690 to 2119. [2021-06-05 07:58:53,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2119 states, 2118 states have (on average 2.7082152974504248) internal successors, (5736), 2118 states have internal predecessors, (5736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:53,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2119 states to 2119 states and 5736 transitions. [2021-06-05 07:58:53,816 INFO L78 Accepts]: Start accepts. Automaton has 2119 states and 5736 transitions. Word has length 100 [2021-06-05 07:58:53,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:53,816 INFO L482 AbstractCegarLoop]: Abstraction has 2119 states and 5736 transitions. [2021-06-05 07:58:53,816 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.818181818181818) internal successors, (128), 22 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:53,816 INFO L276 IsEmpty]: Start isEmpty. Operand 2119 states and 5736 transitions. [2021-06-05 07:58:53,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-06-05 07:58:53,817 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:53,817 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:54,017 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:54,018 INFO L430 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:54,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:54,020 INFO L82 PathProgramCache]: Analyzing trace with hash 93978558, now seen corresponding path program 87 times [2021-06-05 07:58:54,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:54,021 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737758208] [2021-06-05 07:58:54,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:54,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:54,177 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:54,177 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:54,177 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737758208] [2021-06-05 07:58:54,177 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737758208] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:54,177 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649083736] [2021-06-05 07:58:54,177 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:54,235 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-06-05 07:58:54,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:54,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 07:58:54,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:54,346 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:54,347 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649083736] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:54,347 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:54,347 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-06-05 07:58:54,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382422347] [2021-06-05 07:58:54,347 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 07:58:54,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:54,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 07:58:54,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2021-06-05 07:58:54,348 INFO L87 Difference]: Start difference. First operand 2119 states and 5736 transitions. Second operand has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:54,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:54,579 INFO L93 Difference]: Finished difference Result 3646 states and 9047 transitions. [2021-06-05 07:58:54,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 07:58:54,579 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-06-05 07:58:54,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:54,583 INFO L225 Difference]: With dead ends: 3646 [2021-06-05 07:58:54,583 INFO L226 Difference]: Without dead ends: 3376 [2021-06-05 07:58:54,583 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 286.0ms TimeCoverageRelationStatistics Valid=334, Invalid=926, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 07:58:54,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3376 states. [2021-06-05 07:58:54,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3376 to 2263. [2021-06-05 07:58:54,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2263 states, 2262 states have (on average 2.720159151193634) internal successors, (6153), 2262 states have internal predecessors, (6153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:54,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2263 states to 2263 states and 6153 transitions. [2021-06-05 07:58:54,606 INFO L78 Accepts]: Start accepts. Automaton has 2263 states and 6153 transitions. Word has length 100 [2021-06-05 07:58:54,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:54,606 INFO L482 AbstractCegarLoop]: Abstraction has 2263 states and 6153 transitions. [2021-06-05 07:58:54,606 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:54,606 INFO L276 IsEmpty]: Start isEmpty. Operand 2263 states and 6153 transitions. [2021-06-05 07:58:54,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-06-05 07:58:54,607 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:54,607 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:54,815 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:54,816 INFO L430 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:54,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:54,816 INFO L82 PathProgramCache]: Analyzing trace with hash 903030414, now seen corresponding path program 88 times [2021-06-05 07:58:54,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:54,816 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862110803] [2021-06-05 07:58:54,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:54,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:54,967 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:54,967 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:54,968 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862110803] [2021-06-05 07:58:54,968 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862110803] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:54,968 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369493983] [2021-06-05 07:58:54,968 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:55,020 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:58:55,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:55,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 07:58:55,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:55,144 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:55,144 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369493983] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:55,145 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:55,145 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-06-05 07:58:55,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713000840] [2021-06-05 07:58:55,145 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 07:58:55,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:55,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 07:58:55,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2021-06-05 07:58:55,145 INFO L87 Difference]: Start difference. First operand 2263 states and 6153 transitions. Second operand has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:55,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:55,449 INFO L93 Difference]: Finished difference Result 3606 states and 9042 transitions. [2021-06-05 07:58:55,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 07:58:55,449 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-06-05 07:58:55,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:55,452 INFO L225 Difference]: With dead ends: 3606 [2021-06-05 07:58:55,452 INFO L226 Difference]: Without dead ends: 3336 [2021-06-05 07:58:55,453 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 341.2ms TimeCoverageRelationStatistics Valid=389, Invalid=1171, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 07:58:55,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3336 states. [2021-06-05 07:58:55,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3336 to 2338. [2021-06-05 07:58:55,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2338 states, 2337 states have (on average 2.729139922978177) internal successors, (6378), 2337 states have internal predecessors, (6378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:55,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2338 states to 2338 states and 6378 transitions. [2021-06-05 07:58:55,477 INFO L78 Accepts]: Start accepts. Automaton has 2338 states and 6378 transitions. Word has length 100 [2021-06-05 07:58:55,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:55,477 INFO L482 AbstractCegarLoop]: Abstraction has 2338 states and 6378 transitions. [2021-06-05 07:58:55,477 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:55,478 INFO L276 IsEmpty]: Start isEmpty. Operand 2338 states and 6378 transitions. [2021-06-05 07:58:55,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-06-05 07:58:55,479 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:55,479 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:55,679 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96 [2021-06-05 07:58:55,680 INFO L430 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:55,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:55,680 INFO L82 PathProgramCache]: Analyzing trace with hash -488919684, now seen corresponding path program 89 times [2021-06-05 07:58:55,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:55,680 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983834505] [2021-06-05 07:58:55,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:55,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:55,818 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:55,818 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:55,818 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983834505] [2021-06-05 07:58:55,818 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983834505] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:55,818 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128078423] [2021-06-05 07:58:55,818 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:55,871 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-06-05 07:58:55,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:55,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 07:58:55,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:55,995 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:55,995 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128078423] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:55,995 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:55,995 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-06-05 07:58:55,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010113329] [2021-06-05 07:58:55,995 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 07:58:55,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:55,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 07:58:55,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2021-06-05 07:58:55,996 INFO L87 Difference]: Start difference. First operand 2338 states and 6378 transitions. Second operand has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:56,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:56,270 INFO L93 Difference]: Finished difference Result 3656 states and 9217 transitions. [2021-06-05 07:58:56,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 07:58:56,270 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-06-05 07:58:56,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:56,273 INFO L225 Difference]: With dead ends: 3656 [2021-06-05 07:58:56,273 INFO L226 Difference]: Without dead ends: 3386 [2021-06-05 07:58:56,273 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 287.1ms TimeCoverageRelationStatistics Valid=345, Invalid=1061, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 07:58:56,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3386 states. [2021-06-05 07:58:56,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3386 to 2413. [2021-06-05 07:58:56,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2413 states, 2412 states have (on average 2.737562189054726) internal successors, (6603), 2412 states have internal predecessors, (6603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:56,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2413 states to 2413 states and 6603 transitions. [2021-06-05 07:58:56,296 INFO L78 Accepts]: Start accepts. Automaton has 2413 states and 6603 transitions. Word has length 100 [2021-06-05 07:58:56,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:56,296 INFO L482 AbstractCegarLoop]: Abstraction has 2413 states and 6603 transitions. [2021-06-05 07:58:56,296 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:56,296 INFO L276 IsEmpty]: Start isEmpty. Operand 2413 states and 6603 transitions. [2021-06-05 07:58:56,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-06-05 07:58:56,298 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:56,298 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:56,499 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,93 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:56,499 INFO L430 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:56,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:56,499 INFO L82 PathProgramCache]: Analyzing trace with hash -733996980, now seen corresponding path program 90 times [2021-06-05 07:58:56,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:56,499 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840770108] [2021-06-05 07:58:56,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:56,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:56,635 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:56,635 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:56,635 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840770108] [2021-06-05 07:58:56,635 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840770108] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:56,635 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679537091] [2021-06-05 07:58:56,635 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:56,695 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-06-05 07:58:56,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:56,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 07:58:56,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:56,823 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:56,824 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679537091] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:56,824 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:56,824 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-06-05 07:58:56,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766123679] [2021-06-05 07:58:56,824 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 07:58:56,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:56,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 07:58:56,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2021-06-05 07:58:56,824 INFO L87 Difference]: Start difference. First operand 2413 states and 6603 transitions. Second operand has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:57,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:57,175 INFO L93 Difference]: Finished difference Result 3681 states and 9342 transitions. [2021-06-05 07:58:57,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 07:58:57,176 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-06-05 07:58:57,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:57,179 INFO L225 Difference]: With dead ends: 3681 [2021-06-05 07:58:57,179 INFO L226 Difference]: Without dead ends: 3411 [2021-06-05 07:58:57,180 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 361.0ms TimeCoverageRelationStatistics Valid=408, Invalid=1314, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 07:58:57,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3411 states. [2021-06-05 07:58:57,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3411 to 2488. [2021-06-05 07:58:57,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2488 states, 2487 states have (on average 2.7454764776839564) internal successors, (6828), 2487 states have internal predecessors, (6828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:57,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2488 states to 2488 states and 6828 transitions. [2021-06-05 07:58:57,206 INFO L78 Accepts]: Start accepts. Automaton has 2488 states and 6828 transitions. Word has length 100 [2021-06-05 07:58:57,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:57,206 INFO L482 AbstractCegarLoop]: Abstraction has 2488 states and 6828 transitions. [2021-06-05 07:58:57,206 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:57,206 INFO L276 IsEmpty]: Start isEmpty. Operand 2488 states and 6828 transitions. [2021-06-05 07:58:57,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-06-05 07:58:57,208 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:57,208 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Forcibly destroying the process [2021-06-05 07:58:57,409 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2021-06-05 07:58:57,410 INFO L430 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:57,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:57,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1110847302, now seen corresponding path program 91 times [2021-06-05 07:58:57,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:57,410 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089790915] [2021-06-05 07:58:57,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:57,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:57,546 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:57,546 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:57,547 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089790915] [2021-06-05 07:58:57,547 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089790915] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:57,547 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755048163] [2021-06-05 07:58:57,547 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:57,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:57,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 07:58:57,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:57,753 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:57,753 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755048163] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:57,753 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:57,753 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-06-05 07:58:57,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862979518] [2021-06-05 07:58:57,754 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 07:58:57,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:57,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 07:58:57,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2021-06-05 07:58:57,754 INFO L87 Difference]: Start difference. First operand 2488 states and 6828 transitions. Second operand has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:58,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:58,057 INFO L93 Difference]: Finished difference Result 3706 states and 9467 transitions. [2021-06-05 07:58:58,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 07:58:58,057 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-06-05 07:58:58,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:58,061 INFO L225 Difference]: With dead ends: 3706 [2021-06-05 07:58:58,061 INFO L226 Difference]: Without dead ends: 3436 [2021-06-05 07:58:58,061 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 316.8ms TimeCoverageRelationStatistics Valid=372, Invalid=1188, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 07:58:58,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3436 states. [2021-06-05 07:58:58,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3436 to 2563. [2021-06-05 07:58:58,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2563 states, 2562 states have (on average 2.752927400468384) internal successors, (7053), 2562 states have internal predecessors, (7053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:58,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2563 states to 2563 states and 7053 transitions. [2021-06-05 07:58:58,087 INFO L78 Accepts]: Start accepts. Automaton has 2563 states and 7053 transitions. Word has length 100 [2021-06-05 07:58:58,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:58,087 INFO L482 AbstractCegarLoop]: Abstraction has 2563 states and 7053 transitions. [2021-06-05 07:58:58,087 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:58,087 INFO L276 IsEmpty]: Start isEmpty. Operand 2563 states and 7053 transitions. [2021-06-05 07:58:58,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-06-05 07:58:58,089 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:58,089 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:58,293 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,95 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:58,293 INFO L430 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:58,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:58,293 INFO L82 PathProgramCache]: Analyzing trace with hash 215908234, now seen corresponding path program 92 times [2021-06-05 07:58:58,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:58,294 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463208053] [2021-06-05 07:58:58,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:58,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:58,419 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:58,420 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:58,420 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463208053] [2021-06-05 07:58:58,420 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463208053] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:58,420 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246899449] [2021-06-05 07:58:58,420 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:58,472 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:58:58,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:58,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 07:58:58,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:58,592 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:58,592 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246899449] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:58,592 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:58,592 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-06-05 07:58:58,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005354219] [2021-06-05 07:58:58,592 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 07:58:58,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:58,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 07:58:58,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2021-06-05 07:58:58,593 INFO L87 Difference]: Start difference. First operand 2563 states and 7053 transitions. Second operand has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:58,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:58,993 INFO L93 Difference]: Finished difference Result 3731 states and 9592 transitions. [2021-06-05 07:58:58,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 07:58:58,993 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-06-05 07:58:58,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:58,997 INFO L225 Difference]: With dead ends: 3731 [2021-06-05 07:58:58,997 INFO L226 Difference]: Without dead ends: 3461 [2021-06-05 07:58:58,997 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 391.4ms TimeCoverageRelationStatistics Valid=443, Invalid=1449, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 07:58:59,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3461 states. [2021-06-05 07:58:59,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3461 to 2638. [2021-06-05 07:58:59,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2638 states, 2637 states have (on average 2.7599544937428897) internal successors, (7278), 2637 states have internal predecessors, (7278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:59,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2638 states to 2638 states and 7278 transitions. [2021-06-05 07:58:59,023 INFO L78 Accepts]: Start accepts. Automaton has 2638 states and 7278 transitions. Word has length 100 [2021-06-05 07:58:59,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:59,023 INFO L482 AbstractCegarLoop]: Abstraction has 2638 states and 7278 transitions. [2021-06-05 07:58:59,024 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:59,024 INFO L276 IsEmpty]: Start isEmpty. Operand 2638 states and 7278 transitions. [2021-06-05 07:58:59,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-06-05 07:58:59,025 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:59,025 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:58:59,226 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2021-06-05 07:58:59,227 INFO L430 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:58:59,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:58:59,227 INFO L82 PathProgramCache]: Analyzing trace with hash 670124408, now seen corresponding path program 93 times [2021-06-05 07:58:59,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:58:59,227 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804903882] [2021-06-05 07:58:59,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:58:59,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:58:59,343 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:59,343 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:58:59,343 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804903882] [2021-06-05 07:58:59,343 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804903882] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:59,343 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146973642] [2021-06-05 07:58:59,343 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:58:59,400 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-06-05 07:58:59,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:58:59,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 07:58:59,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:58:59,518 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:58:59,518 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146973642] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:58:59,518 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:58:59,518 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-06-05 07:58:59,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5177546] [2021-06-05 07:58:59,518 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 07:58:59,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:58:59,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 07:58:59,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2021-06-05 07:58:59,519 INFO L87 Difference]: Start difference. First operand 2638 states and 7278 transitions. Second operand has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:59,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:58:59,876 INFO L93 Difference]: Finished difference Result 3756 states and 9717 transitions. [2021-06-05 07:58:59,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 07:58:59,876 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-06-05 07:58:59,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:58:59,880 INFO L225 Difference]: With dead ends: 3756 [2021-06-05 07:58:59,880 INFO L226 Difference]: Without dead ends: 3486 [2021-06-05 07:58:59,880 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 334.4ms TimeCoverageRelationStatistics Valid=415, Invalid=1307, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 07:58:59,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3486 states. [2021-06-05 07:58:59,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3486 to 2713. [2021-06-05 07:58:59,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2713 states, 2712 states have (on average 2.7665929203539825) internal successors, (7503), 2712 states have internal predecessors, (7503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:59,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2713 states to 2713 states and 7503 transitions. [2021-06-05 07:58:59,907 INFO L78 Accepts]: Start accepts. Automaton has 2713 states and 7503 transitions. Word has length 100 [2021-06-05 07:58:59,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:58:59,907 INFO L482 AbstractCegarLoop]: Abstraction has 2713 states and 7503 transitions. [2021-06-05 07:58:59,907 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:58:59,907 INFO L276 IsEmpty]: Start isEmpty. Operand 2713 states and 7503 transitions. [2021-06-05 07:58:59,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-06-05 07:58:59,909 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:58:59,909 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:00,110 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2021-06-05 07:59:00,110 INFO L430 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:00,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:00,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1669020744, now seen corresponding path program 94 times [2021-06-05 07:59:00,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:00,110 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658217178] [2021-06-05 07:59:00,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:00,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:00,231 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:00,231 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:00,231 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658217178] [2021-06-05 07:59:00,231 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658217178] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:00,231 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791053331] [2021-06-05 07:59:00,231 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:00,284 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:59:00,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:00,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 07:59:00,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:00,402 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:00,402 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791053331] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:00,402 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:00,402 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-06-05 07:59:00,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119595982] [2021-06-05 07:59:00,403 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 07:59:00,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:00,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 07:59:00,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2021-06-05 07:59:00,403 INFO L87 Difference]: Start difference. First operand 2713 states and 7503 transitions. Second operand has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:00,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:00,856 INFO L93 Difference]: Finished difference Result 3781 states and 9842 transitions. [2021-06-05 07:59:00,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 07:59:00,856 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-06-05 07:59:00,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:00,859 INFO L225 Difference]: With dead ends: 3781 [2021-06-05 07:59:00,859 INFO L226 Difference]: Without dead ends: 3511 [2021-06-05 07:59:00,859 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 424.4ms TimeCoverageRelationStatistics Valid=494, Invalid=1576, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 07:59:00,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3511 states. [2021-06-05 07:59:00,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3511 to 2788. [2021-06-05 07:59:00,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2788 states, 2787 states have (on average 2.772874058127018) internal successors, (7728), 2787 states have internal predecessors, (7728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:00,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2788 states to 2788 states and 7728 transitions. [2021-06-05 07:59:00,886 INFO L78 Accepts]: Start accepts. Automaton has 2788 states and 7728 transitions. Word has length 100 [2021-06-05 07:59:00,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:00,886 INFO L482 AbstractCegarLoop]: Abstraction has 2788 states and 7728 transitions. [2021-06-05 07:59:00,886 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:00,886 INFO L276 IsEmpty]: Start isEmpty. Operand 2788 states and 7728 transitions. [2021-06-05 07:59:00,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-06-05 07:59:00,888 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:00,888 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:01,088 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2021-06-05 07:59:01,088 INFO L430 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:01,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:01,089 INFO L82 PathProgramCache]: Analyzing trace with hash -210307146, now seen corresponding path program 95 times [2021-06-05 07:59:01,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:01,089 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929112818] [2021-06-05 07:59:01,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:01,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:01,202 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:01,202 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:01,202 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929112818] [2021-06-05 07:59:01,202 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929112818] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:01,202 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106170785] [2021-06-05 07:59:01,202 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:01,269 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-06-05 07:59:01,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:01,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 07:59:01,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:01,376 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:01,377 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106170785] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:01,377 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:01,377 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-06-05 07:59:01,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619049262] [2021-06-05 07:59:01,377 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 07:59:01,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:01,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 07:59:01,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2021-06-05 07:59:01,377 INFO L87 Difference]: Start difference. First operand 2788 states and 7728 transitions. Second operand has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:01,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:01,750 INFO L93 Difference]: Finished difference Result 3806 states and 9967 transitions. [2021-06-05 07:59:01,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 07:59:01,751 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-06-05 07:59:01,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:01,754 INFO L225 Difference]: With dead ends: 3806 [2021-06-05 07:59:01,754 INFO L226 Difference]: Without dead ends: 3536 [2021-06-05 07:59:01,754 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 345.1ms TimeCoverageRelationStatistics Valid=474, Invalid=1418, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 07:59:01,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3536 states. [2021-06-05 07:59:01,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3536 to 2863. [2021-06-05 07:59:01,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2863 states, 2862 states have (on average 2.7788259958071277) internal successors, (7953), 2862 states have internal predecessors, (7953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:01,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2863 states to 2863 states and 7953 transitions. [2021-06-05 07:59:01,783 INFO L78 Accepts]: Start accepts. Automaton has 2863 states and 7953 transitions. Word has length 100 [2021-06-05 07:59:01,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:01,783 INFO L482 AbstractCegarLoop]: Abstraction has 2863 states and 7953 transitions. [2021-06-05 07:59:01,784 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:01,784 INFO L276 IsEmpty]: Start isEmpty. Operand 2863 states and 7953 transitions. [2021-06-05 07:59:01,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-06-05 07:59:01,785 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:01,786 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:01,986 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:01,986 INFO L430 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:01,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:01,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1820012166, now seen corresponding path program 96 times [2021-06-05 07:59:01,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:01,986 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19773544] [2021-06-05 07:59:01,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:01,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:02,101 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:02,101 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:02,101 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19773544] [2021-06-05 07:59:02,101 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19773544] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:02,101 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578604707] [2021-06-05 07:59:02,101 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:02,159 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-06-05 07:59:02,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:02,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 07:59:02,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:02,273 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:02,274 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578604707] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:02,274 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:02,274 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-06-05 07:59:02,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365627068] [2021-06-05 07:59:02,274 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 07:59:02,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:02,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 07:59:02,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2021-06-05 07:59:02,274 INFO L87 Difference]: Start difference. First operand 2863 states and 7953 transitions. Second operand has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:02,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:02,726 INFO L93 Difference]: Finished difference Result 3831 states and 10092 transitions. [2021-06-05 07:59:02,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 07:59:02,727 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-06-05 07:59:02,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:02,730 INFO L225 Difference]: With dead ends: 3831 [2021-06-05 07:59:02,730 INFO L226 Difference]: Without dead ends: 3561 [2021-06-05 07:59:02,730 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 420.5ms TimeCoverageRelationStatistics Valid=476, Invalid=1594, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 07:59:02,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3561 states. [2021-06-05 07:59:02,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3561 to 2938. [2021-06-05 07:59:02,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2938 states, 2937 states have (on average 2.7844739530132787) internal successors, (8178), 2937 states have internal predecessors, (8178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:02,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2938 states to 2938 states and 8178 transitions. [2021-06-05 07:59:02,760 INFO L78 Accepts]: Start accepts. Automaton has 2938 states and 8178 transitions. Word has length 100 [2021-06-05 07:59:02,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:02,760 INFO L482 AbstractCegarLoop]: Abstraction has 2938 states and 8178 transitions. [2021-06-05 07:59:02,760 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:02,760 INFO L276 IsEmpty]: Start isEmpty. Operand 2938 states and 8178 transitions. [2021-06-05 07:59:02,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-06-05 07:59:02,762 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:02,762 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:02,962 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable104 [2021-06-05 07:59:02,963 INFO L430 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:02,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:02,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1860715660, now seen corresponding path program 97 times [2021-06-05 07:59:02,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:02,963 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044814783] [2021-06-05 07:59:02,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:02,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:03,086 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:03,086 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:03,086 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044814783] [2021-06-05 07:59:03,086 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044814783] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:03,087 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385333762] [2021-06-05 07:59:03,087 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:03,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:03,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 07:59:03,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:03,241 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:03,242 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385333762] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:03,242 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:03,242 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-06-05 07:59:03,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039205295] [2021-06-05 07:59:03,242 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 07:59:03,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:03,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 07:59:03,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2021-06-05 07:59:03,242 INFO L87 Difference]: Start difference. First operand 2938 states and 8178 transitions. Second operand has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:03,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:03,647 INFO L93 Difference]: Finished difference Result 3856 states and 10217 transitions. [2021-06-05 07:59:03,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 07:59:03,648 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-06-05 07:59:03,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:03,651 INFO L225 Difference]: With dead ends: 3856 [2021-06-05 07:59:03,651 INFO L226 Difference]: Without dead ends: 3586 [2021-06-05 07:59:03,651 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 388.9ms TimeCoverageRelationStatistics Valid=549, Invalid=1521, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 07:59:03,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3586 states. [2021-06-05 07:59:03,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3586 to 3013. [2021-06-05 07:59:03,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3013 states, 3012 states have (on average 2.789840637450199) internal successors, (8403), 3012 states have internal predecessors, (8403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:03,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3013 states to 3013 states and 8403 transitions. [2021-06-05 07:59:03,682 INFO L78 Accepts]: Start accepts. Automaton has 3013 states and 8403 transitions. Word has length 100 [2021-06-05 07:59:03,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:03,683 INFO L482 AbstractCegarLoop]: Abstraction has 3013 states and 8403 transitions. [2021-06-05 07:59:03,683 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:03,683 INFO L276 IsEmpty]: Start isEmpty. Operand 3013 states and 8403 transitions. [2021-06-05 07:59:03,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-06-05 07:59:03,685 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:03,685 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:03,892 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,101 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:03,893 INFO L430 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:03,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:03,893 INFO L82 PathProgramCache]: Analyzing trace with hash 719009348, now seen corresponding path program 98 times [2021-06-05 07:59:03,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:03,893 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258012162] [2021-06-05 07:59:03,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:03,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:04,005 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:04,006 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:04,006 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258012162] [2021-06-05 07:59:04,006 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258012162] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:04,006 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451146711] [2021-06-05 07:59:04,006 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:04,059 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:59:04,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:04,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 07:59:04,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:04,175 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:04,175 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451146711] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:04,175 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:04,175 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-06-05 07:59:04,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49073106] [2021-06-05 07:59:04,176 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 07:59:04,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:04,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 07:59:04,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2021-06-05 07:59:04,176 INFO L87 Difference]: Start difference. First operand 3013 states and 8403 transitions. Second operand has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:04,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:04,707 INFO L93 Difference]: Finished difference Result 3941 states and 10507 transitions. [2021-06-05 07:59:04,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 07:59:04,707 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-06-05 07:59:04,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:04,721 INFO L225 Difference]: With dead ends: 3941 [2021-06-05 07:59:04,722 INFO L226 Difference]: Without dead ends: 3671 [2021-06-05 07:59:04,722 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 496.0ms TimeCoverageRelationStatistics Valid=644, Invalid=1806, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 07:59:04,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3671 states. [2021-06-05 07:59:04,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3671 to 3088. [2021-06-05 07:59:04,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3088 states, 3087 states have (on average 2.801425332037577) internal successors, (8648), 3087 states have internal predecessors, (8648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:04,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3088 states to 3088 states and 8648 transitions. [2021-06-05 07:59:04,752 INFO L78 Accepts]: Start accepts. Automaton has 3088 states and 8648 transitions. Word has length 100 [2021-06-05 07:59:04,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:04,752 INFO L482 AbstractCegarLoop]: Abstraction has 3088 states and 8648 transitions. [2021-06-05 07:59:04,752 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:04,753 INFO L276 IsEmpty]: Start isEmpty. Operand 3088 states and 8648 transitions. [2021-06-05 07:59:04,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-06-05 07:59:04,754 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:04,755 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:04,955 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2021-06-05 07:59:04,956 INFO L430 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:04,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:04,956 INFO L82 PathProgramCache]: Analyzing trace with hash -313638254, now seen corresponding path program 99 times [2021-06-05 07:59:04,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:04,956 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920381898] [2021-06-05 07:59:04,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:04,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:05,066 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:05,067 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:05,067 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920381898] [2021-06-05 07:59:05,067 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920381898] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:05,067 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16284063] [2021-06-05 07:59:05,067 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:05,131 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-06-05 07:59:05,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:05,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2021-06-05 07:59:05,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:05,232 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:05,232 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16284063] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:05,232 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:05,232 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-06-05 07:59:05,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170098644] [2021-06-05 07:59:05,233 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 07:59:05,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:05,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 07:59:05,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2021-06-05 07:59:05,233 INFO L87 Difference]: Start difference. First operand 3088 states and 8648 transitions. Second operand has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:05,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:05,669 INFO L93 Difference]: Finished difference Result 4708 states and 12681 transitions. [2021-06-05 07:59:05,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 07:59:05,669 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-06-05 07:59:05,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:05,674 INFO L225 Difference]: With dead ends: 4708 [2021-06-05 07:59:05,674 INFO L226 Difference]: Without dead ends: 4438 [2021-06-05 07:59:05,675 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 395.6ms TimeCoverageRelationStatistics Valid=641, Invalid=1615, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 07:59:05,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4438 states. [2021-06-05 07:59:05,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4438 to 3268. [2021-06-05 07:59:05,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3268 states, 3267 states have (on average 2.8181818181818183) internal successors, (9207), 3267 states have internal predecessors, (9207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:05,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3268 states to 3268 states and 9207 transitions. [2021-06-05 07:59:05,711 INFO L78 Accepts]: Start accepts. Automaton has 3268 states and 9207 transitions. Word has length 100 [2021-06-05 07:59:05,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:05,711 INFO L482 AbstractCegarLoop]: Abstraction has 3268 states and 9207 transitions. [2021-06-05 07:59:05,712 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:05,712 INFO L276 IsEmpty]: Start isEmpty. Operand 3268 states and 9207 transitions. [2021-06-05 07:59:05,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-06-05 07:59:05,714 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:05,714 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:05,914 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107,103 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:05,914 INFO L430 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:05,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:05,915 INFO L82 PathProgramCache]: Analyzing trace with hash -291295004, now seen corresponding path program 100 times [2021-06-05 07:59:05,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:05,915 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774681567] [2021-06-05 07:59:05,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:05,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:06,025 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:06,025 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:06,025 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774681567] [2021-06-05 07:59:06,025 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774681567] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:06,025 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216730336] [2021-06-05 07:59:06,025 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:06,078 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:59:06,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:06,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 07:59:06,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:06,202 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:06,203 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216730336] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:06,203 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:06,203 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2021-06-05 07:59:06,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849556796] [2021-06-05 07:59:06,203 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-05 07:59:06,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:06,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-05 07:59:06,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2021-06-05 07:59:06,203 INFO L87 Difference]: Start difference. First operand 3268 states and 9207 transitions. Second operand has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:06,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:06,829 INFO L93 Difference]: Finished difference Result 4651 states and 12541 transitions. [2021-06-05 07:59:06,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 07:59:06,830 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-06-05 07:59:06,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:06,834 INFO L225 Difference]: With dead ends: 4651 [2021-06-05 07:59:06,834 INFO L226 Difference]: Without dead ends: 4076 [2021-06-05 07:59:06,834 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 770 ImplicationChecksByTransitivity, 591.5ms TimeCoverageRelationStatistics Valid=804, Invalid=2276, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 07:59:06,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4076 states. [2021-06-05 07:59:06,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4076 to 3303. [2021-06-05 07:59:06,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3303 states, 3302 states have (on average 2.811326468806784) internal successors, (9283), 3302 states have internal predecessors, (9283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:06,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3303 states to 3303 states and 9283 transitions. [2021-06-05 07:59:06,865 INFO L78 Accepts]: Start accepts. Automaton has 3303 states and 9283 transitions. Word has length 100 [2021-06-05 07:59:06,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:06,865 INFO L482 AbstractCegarLoop]: Abstraction has 3303 states and 9283 transitions. [2021-06-05 07:59:06,866 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:06,866 INFO L276 IsEmpty]: Start isEmpty. Operand 3303 states and 9283 transitions. [2021-06-05 07:59:06,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-06-05 07:59:06,868 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:06,868 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:07,068 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,104 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:07,068 INFO L430 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:07,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:07,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1356878341, now seen corresponding path program 101 times [2021-06-05 07:59:07,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:07,069 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090211259] [2021-06-05 07:59:07,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:07,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:07,214 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:07,214 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:07,214 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090211259] [2021-06-05 07:59:07,214 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090211259] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:07,215 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669979104] [2021-06-05 07:59:07,215 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:07,269 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-06-05 07:59:07,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:07,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 21 conjunts are in the unsatisfiable core [2021-06-05 07:59:07,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:07,407 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:07,407 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669979104] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:07,407 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:07,408 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-06-05 07:59:07,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030789470] [2021-06-05 07:59:07,408 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-05 07:59:07,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:07,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-05 07:59:07,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2021-06-05 07:59:07,408 INFO L87 Difference]: Start difference. First operand 3303 states and 9283 transitions. Second operand has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:07,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:07,700 INFO L93 Difference]: Finished difference Result 4346 states and 11497 transitions. [2021-06-05 07:59:07,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 07:59:07,701 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-06-05 07:59:07,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:07,705 INFO L225 Difference]: With dead ends: 4346 [2021-06-05 07:59:07,705 INFO L226 Difference]: Without dead ends: 4076 [2021-06-05 07:59:07,705 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 323.7ms TimeCoverageRelationStatistics Valid=416, Invalid=1224, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 07:59:07,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4076 states. [2021-06-05 07:59:07,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4076 to 3303. [2021-06-05 07:59:07,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3303 states, 3302 states have (on average 2.811326468806784) internal successors, (9283), 3302 states have internal predecessors, (9283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:07,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3303 states to 3303 states and 9283 transitions. [2021-06-05 07:59:07,741 INFO L78 Accepts]: Start accepts. Automaton has 3303 states and 9283 transitions. Word has length 105 [2021-06-05 07:59:07,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:07,742 INFO L482 AbstractCegarLoop]: Abstraction has 3303 states and 9283 transitions. [2021-06-05 07:59:07,742 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:07,742 INFO L276 IsEmpty]: Start isEmpty. Operand 3303 states and 9283 transitions. [2021-06-05 07:59:07,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-06-05 07:59:07,744 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:07,744 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:07,944 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable109 [2021-06-05 07:59:07,944 INFO L430 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:07,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:07,945 INFO L82 PathProgramCache]: Analyzing trace with hash -547826485, now seen corresponding path program 102 times [2021-06-05 07:59:07,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:07,945 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458305494] [2021-06-05 07:59:07,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:07,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:08,095 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:08,095 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:08,095 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458305494] [2021-06-05 07:59:08,095 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458305494] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:08,095 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857918781] [2021-06-05 07:59:08,095 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:08,154 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-06-05 07:59:08,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:08,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 21 conjunts are in the unsatisfiable core [2021-06-05 07:59:08,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:08,322 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:08,322 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857918781] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:08,322 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:08,322 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2021-06-05 07:59:08,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896933321] [2021-06-05 07:59:08,323 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 07:59:08,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:08,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 07:59:08,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2021-06-05 07:59:08,323 INFO L87 Difference]: Start difference. First operand 3303 states and 9283 transitions. Second operand has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:08,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:08,662 INFO L93 Difference]: Finished difference Result 4641 states and 12087 transitions. [2021-06-05 07:59:08,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 07:59:08,663 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-06-05 07:59:08,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:08,667 INFO L225 Difference]: With dead ends: 4641 [2021-06-05 07:59:08,667 INFO L226 Difference]: Without dead ends: 4371 [2021-06-05 07:59:08,667 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 376.2ms TimeCoverageRelationStatistics Valid=465, Invalid=1427, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 07:59:08,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4371 states. [2021-06-05 07:59:08,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4371 to 3303. [2021-06-05 07:59:08,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3303 states, 3302 states have (on average 2.811326468806784) internal successors, (9283), 3302 states have internal predecessors, (9283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:08,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3303 states to 3303 states and 9283 transitions. [2021-06-05 07:59:08,700 INFO L78 Accepts]: Start accepts. Automaton has 3303 states and 9283 transitions. Word has length 105 [2021-06-05 07:59:08,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:08,701 INFO L482 AbstractCegarLoop]: Abstraction has 3303 states and 9283 transitions. [2021-06-05 07:59:08,701 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:08,701 INFO L276 IsEmpty]: Start isEmpty. Operand 3303 states and 9283 transitions. [2021-06-05 07:59:08,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-06-05 07:59:08,703 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:08,703 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:08,903 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,106 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:08,903 INFO L430 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:08,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:08,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1939776583, now seen corresponding path program 103 times [2021-06-05 07:59:08,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:08,904 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007026081] [2021-06-05 07:59:08,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:08,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:09,047 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:09,047 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:09,047 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007026081] [2021-06-05 07:59:09,047 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007026081] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:09,048 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062215483] [2021-06-05 07:59:09,048 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:09,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:09,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 21 conjunts are in the unsatisfiable core [2021-06-05 07:59:09,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:09,228 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:09,228 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062215483] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:09,228 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:09,228 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-06-05 07:59:09,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828470766] [2021-06-05 07:59:09,229 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-05 07:59:09,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:09,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-05 07:59:09,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2021-06-05 07:59:09,229 INFO L87 Difference]: Start difference. First operand 3303 states and 9283 transitions. Second operand has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:09,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:09,550 INFO L93 Difference]: Finished difference Result 4596 states and 11997 transitions. [2021-06-05 07:59:09,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 07:59:09,551 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-06-05 07:59:09,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:09,555 INFO L225 Difference]: With dead ends: 4596 [2021-06-05 07:59:09,555 INFO L226 Difference]: Without dead ends: 4326 [2021-06-05 07:59:09,555 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 352.7ms TimeCoverageRelationStatistics Valid=467, Invalid=1425, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 07:59:09,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4326 states. [2021-06-05 07:59:09,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4326 to 3303. [2021-06-05 07:59:09,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3303 states, 3302 states have (on average 2.811326468806784) internal successors, (9283), 3302 states have internal predecessors, (9283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:09,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3303 states to 3303 states and 9283 transitions. [2021-06-05 07:59:09,588 INFO L78 Accepts]: Start accepts. Automaton has 3303 states and 9283 transitions. Word has length 105 [2021-06-05 07:59:09,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:09,588 INFO L482 AbstractCegarLoop]: Abstraction has 3303 states and 9283 transitions. [2021-06-05 07:59:09,588 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:09,588 INFO L276 IsEmpty]: Start isEmpty. Operand 3303 states and 9283 transitions. [2021-06-05 07:59:09,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-06-05 07:59:09,590 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:09,590 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:09,790 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111,107 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:09,791 INFO L430 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:09,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:09,791 INFO L82 PathProgramCache]: Analyzing trace with hash 2110113417, now seen corresponding path program 104 times [2021-06-05 07:59:09,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:09,791 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864356466] [2021-06-05 07:59:09,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:09,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:09,936 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:09,936 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:09,936 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864356466] [2021-06-05 07:59:09,936 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864356466] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:09,936 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738213965] [2021-06-05 07:59:09,936 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:09,990 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:59:09,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:09,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 21 conjunts are in the unsatisfiable core [2021-06-05 07:59:10,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:10,143 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:10,143 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738213965] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:10,144 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:10,144 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2021-06-05 07:59:10,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665757715] [2021-06-05 07:59:10,144 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 07:59:10,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:10,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 07:59:10,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2021-06-05 07:59:10,144 INFO L87 Difference]: Start difference. First operand 3303 states and 9283 transitions. Second operand has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:10,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:10,521 INFO L93 Difference]: Finished difference Result 4546 states and 11897 transitions. [2021-06-05 07:59:10,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 07:59:10,521 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-06-05 07:59:10,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:10,525 INFO L225 Difference]: With dead ends: 4546 [2021-06-05 07:59:10,525 INFO L226 Difference]: Without dead ends: 4276 [2021-06-05 07:59:10,525 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 405.2ms TimeCoverageRelationStatistics Valid=490, Invalid=1580, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 07:59:10,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4276 states. [2021-06-05 07:59:10,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4276 to 3303. [2021-06-05 07:59:10,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3303 states, 3302 states have (on average 2.811326468806784) internal successors, (9283), 3302 states have internal predecessors, (9283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:10,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3303 states to 3303 states and 9283 transitions. [2021-06-05 07:59:10,557 INFO L78 Accepts]: Start accepts. Automaton has 3303 states and 9283 transitions. Word has length 105 [2021-06-05 07:59:10,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:10,557 INFO L482 AbstractCegarLoop]: Abstraction has 3303 states and 9283 transitions. [2021-06-05 07:59:10,557 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:10,557 INFO L276 IsEmpty]: Start isEmpty. Operand 3303 states and 9283 transitions. [2021-06-05 07:59:10,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-06-05 07:59:10,559 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:10,559 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:10,760 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2021-06-05 07:59:10,760 INFO L430 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:10,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:10,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1733263095, now seen corresponding path program 105 times [2021-06-05 07:59:10,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:10,760 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685351878] [2021-06-05 07:59:10,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:10,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:10,901 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:10,901 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:10,901 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685351878] [2021-06-05 07:59:10,902 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685351878] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:10,902 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913487363] [2021-06-05 07:59:10,902 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:10,962 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-06-05 07:59:10,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:10,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 07:59:10,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:11,082 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:11,083 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913487363] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:11,083 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:11,083 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-06-05 07:59:11,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302032723] [2021-06-05 07:59:11,083 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-05 07:59:11,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:11,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-05 07:59:11,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2021-06-05 07:59:11,083 INFO L87 Difference]: Start difference. First operand 3303 states and 9283 transitions. Second operand has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:11,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:11,431 INFO L93 Difference]: Finished difference Result 4496 states and 11797 transitions. [2021-06-05 07:59:11,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 07:59:11,431 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-06-05 07:59:11,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:11,435 INFO L225 Difference]: With dead ends: 4496 [2021-06-05 07:59:11,435 INFO L226 Difference]: Without dead ends: 4226 [2021-06-05 07:59:11,435 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 359.9ms TimeCoverageRelationStatistics Valid=506, Invalid=1564, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 07:59:11,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4226 states. [2021-06-05 07:59:11,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4226 to 3303. [2021-06-05 07:59:11,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3303 states, 3302 states have (on average 2.811326468806784) internal successors, (9283), 3302 states have internal predecessors, (9283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:11,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3303 states to 3303 states and 9283 transitions. [2021-06-05 07:59:11,469 INFO L78 Accepts]: Start accepts. Automaton has 3303 states and 9283 transitions. Word has length 105 [2021-06-05 07:59:11,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:11,469 INFO L482 AbstractCegarLoop]: Abstraction has 3303 states and 9283 transitions. [2021-06-05 07:59:11,469 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:11,469 INFO L276 IsEmpty]: Start isEmpty. Operand 3303 states and 9283 transitions. [2021-06-05 07:59:11,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-06-05 07:59:11,471 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:11,471 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:11,671 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 109 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2021-06-05 07:59:11,672 INFO L430 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:11,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:11,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1234948665, now seen corresponding path program 106 times [2021-06-05 07:59:11,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:11,672 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753454202] [2021-06-05 07:59:11,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:11,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:11,816 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:11,816 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:11,816 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753454202] [2021-06-05 07:59:11,816 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753454202] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:11,816 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205462575] [2021-06-05 07:59:11,816 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:11,871 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:59:11,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:11,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 21 conjunts are in the unsatisfiable core [2021-06-05 07:59:11,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:12,006 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:12,007 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205462575] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:12,007 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:12,007 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2021-06-05 07:59:12,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700255333] [2021-06-05 07:59:12,007 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 07:59:12,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:12,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 07:59:12,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2021-06-05 07:59:12,007 INFO L87 Difference]: Start difference. First operand 3303 states and 9283 transitions. Second operand has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:12,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:12,434 INFO L93 Difference]: Finished difference Result 4446 states and 11697 transitions. [2021-06-05 07:59:12,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 07:59:12,435 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-06-05 07:59:12,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:12,438 INFO L225 Difference]: With dead ends: 4446 [2021-06-05 07:59:12,438 INFO L226 Difference]: Without dead ends: 4176 [2021-06-05 07:59:12,439 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 445.1ms TimeCoverageRelationStatistics Valid=531, Invalid=1725, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 07:59:12,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4176 states. [2021-06-05 07:59:12,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4176 to 3303. [2021-06-05 07:59:12,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3303 states, 3302 states have (on average 2.811326468806784) internal successors, (9283), 3302 states have internal predecessors, (9283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:12,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3303 states to 3303 states and 9283 transitions. [2021-06-05 07:59:12,470 INFO L78 Accepts]: Start accepts. Automaton has 3303 states and 9283 transitions. Word has length 105 [2021-06-05 07:59:12,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:12,470 INFO L482 AbstractCegarLoop]: Abstraction has 3303 states and 9283 transitions. [2021-06-05 07:59:12,470 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:12,470 INFO L276 IsEmpty]: Start isEmpty. Operand 3303 states and 9283 transitions. [2021-06-05 07:59:12,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-06-05 07:59:12,473 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:12,473 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:12,673 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2021-06-05 07:59:12,673 INFO L430 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:12,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:12,673 INFO L82 PathProgramCache]: Analyzing trace with hash -780732491, now seen corresponding path program 107 times [2021-06-05 07:59:12,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:12,674 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561285445] [2021-06-05 07:59:12,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:12,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:12,800 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:12,800 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:12,800 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561285445] [2021-06-05 07:59:12,800 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561285445] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:12,801 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605133052] [2021-06-05 07:59:12,801 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:12,855 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-06-05 07:59:12,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:12,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 21 conjunts are in the unsatisfiable core [2021-06-05 07:59:12,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:12,982 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:12,982 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605133052] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:12,983 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:12,983 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-06-05 07:59:12,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313175168] [2021-06-05 07:59:12,983 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-05 07:59:12,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:12,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-05 07:59:12,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2021-06-05 07:59:12,983 INFO L87 Difference]: Start difference. First operand 3303 states and 9283 transitions. Second operand has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:13,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:13,376 INFO L93 Difference]: Finished difference Result 4396 states and 11597 transitions. [2021-06-05 07:59:13,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 07:59:13,376 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-06-05 07:59:13,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:13,379 INFO L225 Difference]: With dead ends: 4396 [2021-06-05 07:59:13,379 INFO L226 Difference]: Without dead ends: 4126 [2021-06-05 07:59:13,379 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 530 ImplicationChecksByTransitivity, 375.5ms TimeCoverageRelationStatistics Valid=561, Invalid=1695, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 07:59:13,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4126 states. [2021-06-05 07:59:13,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4126 to 3303. [2021-06-05 07:59:13,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3303 states, 3302 states have (on average 2.811326468806784) internal successors, (9283), 3302 states have internal predecessors, (9283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:13,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3303 states to 3303 states and 9283 transitions. [2021-06-05 07:59:13,410 INFO L78 Accepts]: Start accepts. Automaton has 3303 states and 9283 transitions. Word has length 105 [2021-06-05 07:59:13,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:13,410 INFO L482 AbstractCegarLoop]: Abstraction has 3303 states and 9283 transitions. [2021-06-05 07:59:13,410 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:13,410 INFO L276 IsEmpty]: Start isEmpty. Operand 3303 states and 9283 transitions. [2021-06-05 07:59:13,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-06-05 07:59:13,412 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:13,412 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:13,613 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115,111 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:13,614 INFO L430 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:13,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:13,614 INFO L82 PathProgramCache]: Analyzing trace with hash 218163845, now seen corresponding path program 108 times [2021-06-05 07:59:13,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:13,614 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800242074] [2021-06-05 07:59:13,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:13,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:13,754 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:13,754 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:13,754 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800242074] [2021-06-05 07:59:13,755 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800242074] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:13,755 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125398587] [2021-06-05 07:59:13,755 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:13,813 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-06-05 07:59:13,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:13,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 21 conjunts are in the unsatisfiable core [2021-06-05 07:59:13,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:13,956 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:13,956 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125398587] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:13,956 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:13,956 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2021-06-05 07:59:13,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690932173] [2021-06-05 07:59:13,957 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 07:59:13,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:13,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 07:59:13,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2021-06-05 07:59:13,957 INFO L87 Difference]: Start difference. First operand 3303 states and 9283 transitions. Second operand has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:14,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:14,444 INFO L93 Difference]: Finished difference Result 4346 states and 11497 transitions. [2021-06-05 07:59:14,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 07:59:14,444 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-06-05 07:59:14,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:14,448 INFO L225 Difference]: With dead ends: 4346 [2021-06-05 07:59:14,448 INFO L226 Difference]: Without dead ends: 4076 [2021-06-05 07:59:14,448 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 550 ImplicationChecksByTransitivity, 470.1ms TimeCoverageRelationStatistics Valid=588, Invalid=1862, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 07:59:14,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4076 states. [2021-06-05 07:59:14,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4076 to 3303. [2021-06-05 07:59:14,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3303 states, 3302 states have (on average 2.811326468806784) internal successors, (9283), 3302 states have internal predecessors, (9283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:14,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3303 states to 3303 states and 9283 transitions. [2021-06-05 07:59:14,479 INFO L78 Accepts]: Start accepts. Automaton has 3303 states and 9283 transitions. Word has length 105 [2021-06-05 07:59:14,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:14,479 INFO L482 AbstractCegarLoop]: Abstraction has 3303 states and 9283 transitions. [2021-06-05 07:59:14,479 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:14,479 INFO L276 IsEmpty]: Start isEmpty. Operand 3303 states and 9283 transitions. [2021-06-05 07:59:14,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-06-05 07:59:14,481 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:14,482 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:14,682 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable116 [2021-06-05 07:59:14,682 INFO L430 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:14,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:14,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1661164045, now seen corresponding path program 109 times [2021-06-05 07:59:14,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:14,682 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033471759] [2021-06-05 07:59:14,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:14,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:14,804 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:14,805 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:14,805 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033471759] [2021-06-05 07:59:14,805 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033471759] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:14,805 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678730567] [2021-06-05 07:59:14,805 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:14,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:14,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 21 conjunts are in the unsatisfiable core [2021-06-05 07:59:14,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:14,980 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:14,980 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678730567] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:14,980 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:14,980 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-06-05 07:59:14,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072046717] [2021-06-05 07:59:14,981 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-05 07:59:14,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:14,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-05 07:59:14,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2021-06-05 07:59:14,981 INFO L87 Difference]: Start difference. First operand 3303 states and 9283 transitions. Second operand has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:15,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:15,413 INFO L93 Difference]: Finished difference Result 4296 states and 11397 transitions. [2021-06-05 07:59:15,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 07:59:15,414 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-06-05 07:59:15,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:15,417 INFO L225 Difference]: With dead ends: 4296 [2021-06-05 07:59:15,417 INFO L226 Difference]: Without dead ends: 4026 [2021-06-05 07:59:15,418 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 608 ImplicationChecksByTransitivity, 407.9ms TimeCoverageRelationStatistics Valid=632, Invalid=1818, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 07:59:15,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4026 states. [2021-06-05 07:59:15,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4026 to 3303. [2021-06-05 07:59:15,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3303 states, 3302 states have (on average 2.811326468806784) internal successors, (9283), 3302 states have internal predecessors, (9283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:15,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3303 states to 3303 states and 9283 transitions. [2021-06-05 07:59:15,449 INFO L78 Accepts]: Start accepts. Automaton has 3303 states and 9283 transitions. Word has length 105 [2021-06-05 07:59:15,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:15,449 INFO L482 AbstractCegarLoop]: Abstraction has 3303 states and 9283 transitions. [2021-06-05 07:59:15,449 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:15,449 INFO L276 IsEmpty]: Start isEmpty. Operand 3303 states and 9283 transitions. [2021-06-05 07:59:15,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-06-05 07:59:15,451 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:15,451 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:15,651 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2021-06-05 07:59:15,651 INFO L430 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:15,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:15,652 INFO L82 PathProgramCache]: Analyzing trace with hash 369155267, now seen corresponding path program 110 times [2021-06-05 07:59:15,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:15,652 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138604584] [2021-06-05 07:59:15,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:15,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:15,771 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:15,771 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:15,771 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138604584] [2021-06-05 07:59:15,771 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138604584] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:15,771 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144895053] [2021-06-05 07:59:15,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:15,825 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:59:15,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:15,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 21 conjunts are in the unsatisfiable core [2021-06-05 07:59:15,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:15,964 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:15,964 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144895053] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:15,964 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:15,964 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2021-06-05 07:59:15,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461709229] [2021-06-05 07:59:15,965 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 07:59:15,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:15,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 07:59:15,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2021-06-05 07:59:15,965 INFO L87 Difference]: Start difference. First operand 3303 states and 9283 transitions. Second operand has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:16,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:16,493 INFO L93 Difference]: Finished difference Result 4246 states and 11297 transitions. [2021-06-05 07:59:16,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 07:59:16,493 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-06-05 07:59:16,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:16,497 INFO L225 Difference]: With dead ends: 4246 [2021-06-05 07:59:16,497 INFO L226 Difference]: Without dead ends: 3976 [2021-06-05 07:59:16,497 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 631 ImplicationChecksByTransitivity, 498.0ms TimeCoverageRelationStatistics Valid=661, Invalid=1991, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 07:59:16,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3976 states. [2021-06-05 07:59:16,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3976 to 3303. [2021-06-05 07:59:16,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3303 states, 3302 states have (on average 2.811326468806784) internal successors, (9283), 3302 states have internal predecessors, (9283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:16,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3303 states to 3303 states and 9283 transitions. [2021-06-05 07:59:16,529 INFO L78 Accepts]: Start accepts. Automaton has 3303 states and 9283 transitions. Word has length 105 [2021-06-05 07:59:16,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:16,529 INFO L482 AbstractCegarLoop]: Abstraction has 3303 states and 9283 transitions. [2021-06-05 07:59:16,529 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:16,529 INFO L276 IsEmpty]: Start isEmpty. Operand 3303 states and 9283 transitions. [2021-06-05 07:59:16,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-06-05 07:59:16,531 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:16,531 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:16,732 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 114 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2021-06-05 07:59:16,732 INFO L430 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:16,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:16,733 INFO L82 PathProgramCache]: Analyzing trace with hash 983394737, now seen corresponding path program 111 times [2021-06-05 07:59:16,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:16,733 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517371284] [2021-06-05 07:59:16,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:16,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:16,852 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:16,852 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:16,852 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517371284] [2021-06-05 07:59:16,852 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517371284] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:16,852 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646442394] [2021-06-05 07:59:16,852 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:16,926 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-06-05 07:59:16,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:16,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 07:59:16,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:17,043 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:17,043 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646442394] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:17,043 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:17,043 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-06-05 07:59:17,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022499276] [2021-06-05 07:59:17,043 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-05 07:59:17,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:17,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-05 07:59:17,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2021-06-05 07:59:17,044 INFO L87 Difference]: Start difference. First operand 3303 states and 9283 transitions. Second operand has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:17,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:17,497 INFO L93 Difference]: Finished difference Result 4196 states and 11197 transitions. [2021-06-05 07:59:17,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 07:59:17,497 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-06-05 07:59:17,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:17,501 INFO L225 Difference]: With dead ends: 4196 [2021-06-05 07:59:17,501 INFO L226 Difference]: Without dead ends: 3926 [2021-06-05 07:59:17,502 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 423.2ms TimeCoverageRelationStatistics Valid=719, Invalid=1933, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 07:59:17,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3926 states. [2021-06-05 07:59:17,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3926 to 3303. [2021-06-05 07:59:17,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3303 states, 3302 states have (on average 2.811326468806784) internal successors, (9283), 3302 states have internal predecessors, (9283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:17,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3303 states to 3303 states and 9283 transitions. [2021-06-05 07:59:17,535 INFO L78 Accepts]: Start accepts. Automaton has 3303 states and 9283 transitions. Word has length 105 [2021-06-05 07:59:17,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:17,535 INFO L482 AbstractCegarLoop]: Abstraction has 3303 states and 9283 transitions. [2021-06-05 07:59:17,535 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:17,535 INFO L276 IsEmpty]: Start isEmpty. Operand 3303 states and 9283 transitions. [2021-06-05 07:59:17,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-06-05 07:59:17,537 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:17,537 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:17,744 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,115 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:17,745 INFO L430 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:17,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:17,745 INFO L82 PathProgramCache]: Analyzing trace with hash -731847551, now seen corresponding path program 112 times [2021-06-05 07:59:17,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:17,745 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640277439] [2021-06-05 07:59:17,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:17,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:17,877 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:17,877 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:17,877 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640277439] [2021-06-05 07:59:17,877 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640277439] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:17,877 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601642048] [2021-06-05 07:59:17,877 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:17,935 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:59:17,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:17,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 21 conjunts are in the unsatisfiable core [2021-06-05 07:59:17,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:18,063 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:18,063 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601642048] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:18,063 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:18,064 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2021-06-05 07:59:18,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193046212] [2021-06-05 07:59:18,064 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 07:59:18,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:18,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 07:59:18,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2021-06-05 07:59:18,064 INFO L87 Difference]: Start difference. First operand 3303 states and 9283 transitions. Second operand has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:18,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:18,678 INFO L93 Difference]: Finished difference Result 4206 states and 11247 transitions. [2021-06-05 07:59:18,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 07:59:18,679 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-06-05 07:59:18,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:18,682 INFO L225 Difference]: With dead ends: 4206 [2021-06-05 07:59:18,682 INFO L226 Difference]: Without dead ends: 3936 [2021-06-05 07:59:18,682 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 548.9ms TimeCoverageRelationStatistics Valid=750, Invalid=2112, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 07:59:18,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3936 states. [2021-06-05 07:59:18,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3936 to 3303. [2021-06-05 07:59:18,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3303 states, 3302 states have (on average 2.812840702604482) internal successors, (9288), 3302 states have internal predecessors, (9288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:18,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3303 states to 3303 states and 9288 transitions. [2021-06-05 07:59:18,710 INFO L78 Accepts]: Start accepts. Automaton has 3303 states and 9288 transitions. Word has length 105 [2021-06-05 07:59:18,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:18,710 INFO L482 AbstractCegarLoop]: Abstraction has 3303 states and 9288 transitions. [2021-06-05 07:59:18,710 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:18,710 INFO L276 IsEmpty]: Start isEmpty. Operand 3303 states and 9288 transitions. [2021-06-05 07:59:18,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-06-05 07:59:18,712 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:18,712 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:18,912 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,116 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:18,913 INFO L430 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:18,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:18,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1764495153, now seen corresponding path program 113 times [2021-06-05 07:59:18,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:18,913 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095828527] [2021-06-05 07:59:18,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:18,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:19,030 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:19,030 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:19,030 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095828527] [2021-06-05 07:59:19,031 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095828527] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:19,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405649350] [2021-06-05 07:59:19,031 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:19,084 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-06-05 07:59:19,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:19,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 21 conjunts are in the unsatisfiable core [2021-06-05 07:59:19,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:19,201 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:19,201 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405649350] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:19,201 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:19,201 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-06-05 07:59:19,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251748898] [2021-06-05 07:59:19,201 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-05 07:59:19,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:19,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-05 07:59:19,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2021-06-05 07:59:19,202 INFO L87 Difference]: Start difference. First operand 3303 states and 9288 transitions. Second operand has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:19,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:19,687 INFO L93 Difference]: Finished difference Result 4948 states and 13371 transitions. [2021-06-05 07:59:19,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 07:59:19,688 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-06-05 07:59:19,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:19,692 INFO L225 Difference]: With dead ends: 4948 [2021-06-05 07:59:19,692 INFO L226 Difference]: Without dead ends: 4678 [2021-06-05 07:59:19,693 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 775 ImplicationChecksByTransitivity, 443.3ms TimeCoverageRelationStatistics Valid=823, Invalid=2039, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 07:59:19,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4678 states. [2021-06-05 07:59:19,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4678 to 3483. [2021-06-05 07:59:19,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3483 states, 3482 states have (on average 2.827972429638139) internal successors, (9847), 3482 states have internal predecessors, (9847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:19,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3483 states to 3483 states and 9847 transitions. [2021-06-05 07:59:19,728 INFO L78 Accepts]: Start accepts. Automaton has 3483 states and 9847 transitions. Word has length 105 [2021-06-05 07:59:19,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:19,728 INFO L482 AbstractCegarLoop]: Abstraction has 3483 states and 9847 transitions. [2021-06-05 07:59:19,729 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:19,729 INFO L276 IsEmpty]: Start isEmpty. Operand 3483 states and 9847 transitions. [2021-06-05 07:59:19,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-06-05 07:59:19,731 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:19,731 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:19,931 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,117 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:19,931 INFO L430 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:19,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:19,931 INFO L82 PathProgramCache]: Analyzing trace with hash -1742151903, now seen corresponding path program 114 times [2021-06-05 07:59:19,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:19,932 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904285092] [2021-06-05 07:59:19,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:19,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:20,051 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:20,051 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:20,051 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904285092] [2021-06-05 07:59:20,051 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904285092] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:20,051 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25586990] [2021-06-05 07:59:20,051 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:20,110 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-06-05 07:59:20,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:20,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2021-06-05 07:59:20,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:20,240 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:20,240 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25586990] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:20,240 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:20,240 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2021-06-05 07:59:20,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11060088] [2021-06-05 07:59:20,240 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 07:59:20,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:20,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 07:59:20,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2021-06-05 07:59:20,241 INFO L87 Difference]: Start difference. First operand 3483 states and 9847 transitions. Second operand has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:20,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:20,915 INFO L93 Difference]: Finished difference Result 4816 states and 13036 transitions. [2021-06-05 07:59:20,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 07:59:20,916 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-06-05 07:59:20,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:20,920 INFO L225 Difference]: With dead ends: 4816 [2021-06-05 07:59:20,920 INFO L226 Difference]: Without dead ends: 4241 [2021-06-05 07:59:20,920 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 879 ImplicationChecksByTransitivity, 596.1ms TimeCoverageRelationStatistics Valid=830, Invalid=2592, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 07:59:20,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4241 states. [2021-06-05 07:59:20,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4241 to 2324. [2021-06-05 07:59:20,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2324 states, 2323 states have (on average 2.7361170899698664) internal successors, (6356), 2323 states have internal predecessors, (6356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:20,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2324 states to 2324 states and 6356 transitions. [2021-06-05 07:59:20,946 INFO L78 Accepts]: Start accepts. Automaton has 2324 states and 6356 transitions. Word has length 105 [2021-06-05 07:59:20,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:20,946 INFO L482 AbstractCegarLoop]: Abstraction has 2324 states and 6356 transitions. [2021-06-05 07:59:20,946 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:20,946 INFO L276 IsEmpty]: Start isEmpty. Operand 2324 states and 6356 transitions. [2021-06-05 07:59:20,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-06-05 07:59:20,948 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:20,948 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:21,148 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 118 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2021-06-05 07:59:21,148 INFO L430 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:21,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:21,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1657780875, now seen corresponding path program 115 times [2021-06-05 07:59:21,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:21,149 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312419233] [2021-06-05 07:59:21,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:21,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:21,320 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:21,321 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:21,321 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312419233] [2021-06-05 07:59:21,321 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312419233] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:21,321 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017525793] [2021-06-05 07:59:21,321 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:21,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:21,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 07:59:21,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:21,538 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:21,538 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017525793] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:21,539 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:21,539 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 25 [2021-06-05 07:59:21,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227500262] [2021-06-05 07:59:21,539 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 07:59:21,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:21,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 07:59:21,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=467, Unknown=0, NotChecked=0, Total=600 [2021-06-05 07:59:21,539 INFO L87 Difference]: Start difference. First operand 2324 states and 6356 transitions. Second operand has 25 states, 25 states have (on average 5.6) internal successors, (140), 25 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:21,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:21,912 INFO L93 Difference]: Finished difference Result 3364 states and 8756 transitions. [2021-06-05 07:59:21,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 07:59:21,917 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.6) internal successors, (140), 25 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-06-05 07:59:21,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:21,920 INFO L225 Difference]: With dead ends: 3364 [2021-06-05 07:59:21,920 INFO L226 Difference]: Without dead ends: 3030 [2021-06-05 07:59:21,921 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 425 ImplicationChecksByTransitivity, 425.3ms TimeCoverageRelationStatistics Valid=572, Invalid=1590, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 07:59:21,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3030 states. [2021-06-05 07:59:21,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3030 to 2409. [2021-06-05 07:59:21,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2409 states, 2408 states have (on average 2.7101328903654487) internal successors, (6526), 2408 states have internal predecessors, (6526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:21,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2409 states to 2409 states and 6526 transitions. [2021-06-05 07:59:21,947 INFO L78 Accepts]: Start accepts. Automaton has 2409 states and 6526 transitions. Word has length 110 [2021-06-05 07:59:21,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:21,947 INFO L482 AbstractCegarLoop]: Abstraction has 2409 states and 6526 transitions. [2021-06-05 07:59:21,947 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.6) internal successors, (140), 25 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:21,948 INFO L276 IsEmpty]: Start isEmpty. Operand 2409 states and 6526 transitions. [2021-06-05 07:59:21,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-06-05 07:59:21,949 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:21,949 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:22,166 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2021-06-05 07:59:22,166 INFO L430 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:22,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:22,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1067386545, now seen corresponding path program 116 times [2021-06-05 07:59:22,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:22,166 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963012861] [2021-06-05 07:59:22,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:22,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:22,340 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:22,340 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:22,340 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963012861] [2021-06-05 07:59:22,340 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963012861] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:22,340 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865822957] [2021-06-05 07:59:22,340 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:22,395 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:59:22,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:22,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 22 conjunts are in the unsatisfiable core [2021-06-05 07:59:22,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:22,531 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:22,532 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865822957] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:22,532 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:22,532 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-06-05 07:59:22,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533271182] [2021-06-05 07:59:22,532 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 07:59:22,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:22,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 07:59:22,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2021-06-05 07:59:22,532 INFO L87 Difference]: Start difference. First operand 2409 states and 6526 transitions. Second operand has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:22,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:22,833 INFO L93 Difference]: Finished difference Result 4086 states and 10137 transitions. [2021-06-05 07:59:22,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 07:59:22,834 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-06-05 07:59:22,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:22,838 INFO L225 Difference]: With dead ends: 4086 [2021-06-05 07:59:22,838 INFO L226 Difference]: Without dead ends: 3816 [2021-06-05 07:59:22,839 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 346.4ms TimeCoverageRelationStatistics Valid=446, Invalid=1194, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 07:59:22,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3816 states. [2021-06-05 07:59:22,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3816 to 2553. [2021-06-05 07:59:22,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2553 states, 2552 states have (on average 2.720611285266458) internal successors, (6943), 2552 states have internal predecessors, (6943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:22,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2553 states to 2553 states and 6943 transitions. [2021-06-05 07:59:22,867 INFO L78 Accepts]: Start accepts. Automaton has 2553 states and 6943 transitions. Word has length 110 [2021-06-05 07:59:22,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:22,867 INFO L482 AbstractCegarLoop]: Abstraction has 2553 states and 6943 transitions. [2021-06-05 07:59:22,867 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:22,867 INFO L276 IsEmpty]: Start isEmpty. Operand 2553 states and 6943 transitions. [2021-06-05 07:59:22,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-06-05 07:59:22,869 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:22,869 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:23,083 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2021-06-05 07:59:23,083 INFO L430 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:23,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:23,083 INFO L82 PathProgramCache]: Analyzing trace with hash -1447830497, now seen corresponding path program 117 times [2021-06-05 07:59:23,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:23,083 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219628852] [2021-06-05 07:59:23,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:23,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:23,244 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:23,244 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:23,244 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219628852] [2021-06-05 07:59:23,244 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219628852] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:23,244 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254221470] [2021-06-05 07:59:23,245 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:23,304 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-06-05 07:59:23,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:23,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 22 conjunts are in the unsatisfiable core [2021-06-05 07:59:23,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:23,453 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:23,453 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254221470] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:23,454 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:23,454 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-06-05 07:59:23,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829127360] [2021-06-05 07:59:23,454 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 07:59:23,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:23,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 07:59:23,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2021-06-05 07:59:23,454 INFO L87 Difference]: Start difference. First operand 2553 states and 6943 transitions. Second operand has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:23,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:23,822 INFO L93 Difference]: Finished difference Result 4046 states and 10132 transitions. [2021-06-05 07:59:23,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 07:59:23,822 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-06-05 07:59:23,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:23,826 INFO L225 Difference]: With dead ends: 4046 [2021-06-05 07:59:23,826 INFO L226 Difference]: Without dead ends: 3776 [2021-06-05 07:59:23,826 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 397.0ms TimeCoverageRelationStatistics Valid=507, Invalid=1473, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 07:59:23,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3776 states. [2021-06-05 07:59:23,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3776 to 2628. [2021-06-05 07:59:23,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2628 states, 2627 states have (on average 2.7285877426722496) internal successors, (7168), 2627 states have internal predecessors, (7168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:23,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2628 states to 2628 states and 7168 transitions. [2021-06-05 07:59:23,853 INFO L78 Accepts]: Start accepts. Automaton has 2628 states and 7168 transitions. Word has length 110 [2021-06-05 07:59:23,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:23,853 INFO L482 AbstractCegarLoop]: Abstraction has 2628 states and 7168 transitions. [2021-06-05 07:59:23,853 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:23,853 INFO L276 IsEmpty]: Start isEmpty. Operand 2628 states and 7168 transitions. [2021-06-05 07:59:23,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-06-05 07:59:23,855 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:23,855 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:24,055 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 121 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2021-06-05 07:59:24,055 INFO L430 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:24,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:24,056 INFO L82 PathProgramCache]: Analyzing trace with hash -823455347, now seen corresponding path program 118 times [2021-06-05 07:59:24,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:24,056 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365734763] [2021-06-05 07:59:24,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:24,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:24,238 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:24,238 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:24,238 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365734763] [2021-06-05 07:59:24,239 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365734763] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:24,239 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410365108] [2021-06-05 07:59:24,239 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:24,295 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:59:24,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:24,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 22 conjunts are in the unsatisfiable core [2021-06-05 07:59:24,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:24,433 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:24,433 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410365108] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:24,433 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:24,433 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-06-05 07:59:24,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757120466] [2021-06-05 07:59:24,433 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 07:59:24,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:24,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 07:59:24,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2021-06-05 07:59:24,434 INFO L87 Difference]: Start difference. First operand 2628 states and 7168 transitions. Second operand has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:24,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:24,767 INFO L93 Difference]: Finished difference Result 4096 states and 10307 transitions. [2021-06-05 07:59:24,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 07:59:24,767 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-06-05 07:59:24,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:24,771 INFO L225 Difference]: With dead ends: 4096 [2021-06-05 07:59:24,771 INFO L226 Difference]: Without dead ends: 3826 [2021-06-05 07:59:24,771 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 351.7ms TimeCoverageRelationStatistics Valid=454, Invalid=1352, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 07:59:24,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3826 states. [2021-06-05 07:59:24,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3826 to 2703. [2021-06-05 07:59:24,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2703 states, 2702 states have (on average 2.736121391561806) internal successors, (7393), 2702 states have internal predecessors, (7393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:24,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2703 states to 2703 states and 7393 transitions. [2021-06-05 07:59:24,799 INFO L78 Accepts]: Start accepts. Automaton has 2703 states and 7393 transitions. Word has length 110 [2021-06-05 07:59:24,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:24,800 INFO L482 AbstractCegarLoop]: Abstraction has 2703 states and 7393 transitions. [2021-06-05 07:59:24,800 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:24,800 INFO L276 IsEmpty]: Start isEmpty. Operand 2703 states and 7393 transitions. [2021-06-05 07:59:24,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-06-05 07:59:24,802 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:24,802 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:25,003 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable126 [2021-06-05 07:59:25,003 INFO L430 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:25,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:25,004 INFO L82 PathProgramCache]: Analyzing trace with hash -14403491, now seen corresponding path program 119 times [2021-06-05 07:59:25,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:25,005 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121560589] [2021-06-05 07:59:25,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:25,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:25,171 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:25,171 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:25,171 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121560589] [2021-06-05 07:59:25,171 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121560589] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:25,171 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102618527] [2021-06-05 07:59:25,172 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:25,229 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-06-05 07:59:25,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:25,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 22 conjunts are in the unsatisfiable core [2021-06-05 07:59:25,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:25,391 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:25,391 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102618527] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:25,391 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:25,392 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-06-05 07:59:25,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869062723] [2021-06-05 07:59:25,392 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 07:59:25,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:25,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 07:59:25,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2021-06-05 07:59:25,392 INFO L87 Difference]: Start difference. First operand 2703 states and 7393 transitions. Second operand has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:25,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:25,822 INFO L93 Difference]: Finished difference Result 4121 states and 10432 transitions. [2021-06-05 07:59:25,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 07:59:25,822 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-06-05 07:59:25,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:25,825 INFO L225 Difference]: With dead ends: 4121 [2021-06-05 07:59:25,825 INFO L226 Difference]: Without dead ends: 3851 [2021-06-05 07:59:25,825 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 444.5ms TimeCoverageRelationStatistics Valid=523, Invalid=1639, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 07:59:25,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3851 states. [2021-06-05 07:59:25,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3851 to 2778. [2021-06-05 07:59:25,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2778 states, 2777 states have (on average 2.7432481094706516) internal successors, (7618), 2777 states have internal predecessors, (7618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:25,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2778 states to 2778 states and 7618 transitions. [2021-06-05 07:59:25,853 INFO L78 Accepts]: Start accepts. Automaton has 2778 states and 7618 transitions. Word has length 110 [2021-06-05 07:59:25,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:25,854 INFO L482 AbstractCegarLoop]: Abstraction has 2778 states and 7618 transitions. [2021-06-05 07:59:25,854 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:25,854 INFO L276 IsEmpty]: Start isEmpty. Operand 2778 states and 7618 transitions. [2021-06-05 07:59:25,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-06-05 07:59:25,856 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:25,856 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:26,060 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,123 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:26,061 INFO L430 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:26,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:26,061 INFO L82 PathProgramCache]: Analyzing trace with hash -1406353589, now seen corresponding path program 120 times [2021-06-05 07:59:26,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:26,061 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401681273] [2021-06-05 07:59:26,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:26,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:26,206 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:26,206 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:26,206 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401681273] [2021-06-05 07:59:26,206 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401681273] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:26,206 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489302801] [2021-06-05 07:59:26,206 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:26,267 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-06-05 07:59:26,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:26,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 22 conjunts are in the unsatisfiable core [2021-06-05 07:59:26,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:26,405 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:26,405 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489302801] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:26,405 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:26,405 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-06-05 07:59:26,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514089741] [2021-06-05 07:59:26,405 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 07:59:26,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:26,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 07:59:26,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2021-06-05 07:59:26,406 INFO L87 Difference]: Start difference. First operand 2778 states and 7618 transitions. Second operand has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:26,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:26,778 INFO L93 Difference]: Finished difference Result 4146 states and 10557 transitions. [2021-06-05 07:59:26,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 07:59:26,778 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-06-05 07:59:26,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:26,782 INFO L225 Difference]: With dead ends: 4146 [2021-06-05 07:59:26,782 INFO L226 Difference]: Without dead ends: 3876 [2021-06-05 07:59:26,782 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 370.1ms TimeCoverageRelationStatistics Valid=478, Invalid=1502, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 07:59:26,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3876 states. [2021-06-05 07:59:26,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3876 to 2853. [2021-06-05 07:59:26,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2853 states, 2852 states have (on average 2.75) internal successors, (7843), 2852 states have internal predecessors, (7843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:26,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2853 states to 2853 states and 7843 transitions. [2021-06-05 07:59:26,810 INFO L78 Accepts]: Start accepts. Automaton has 2853 states and 7843 transitions. Word has length 110 [2021-06-05 07:59:26,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:26,810 INFO L482 AbstractCegarLoop]: Abstraction has 2853 states and 7843 transitions. [2021-06-05 07:59:26,810 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:26,810 INFO L276 IsEmpty]: Start isEmpty. Operand 2853 states and 7843 transitions. [2021-06-05 07:59:26,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-06-05 07:59:26,812 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:26,812 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:27,012 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2021-06-05 07:59:27,012 INFO L430 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:27,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:27,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1651430885, now seen corresponding path program 121 times [2021-06-05 07:59:27,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:27,013 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282089842] [2021-06-05 07:59:27,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:27,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:27,163 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:27,164 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:27,164 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282089842] [2021-06-05 07:59:27,164 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282089842] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:27,164 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622974217] [2021-06-05 07:59:27,164 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:27,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:27,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 22 conjunts are in the unsatisfiable core [2021-06-05 07:59:27,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:27,365 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:27,365 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622974217] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:27,365 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:27,365 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-06-05 07:59:27,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009083109] [2021-06-05 07:59:27,366 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 07:59:27,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:27,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 07:59:27,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2021-06-05 07:59:27,366 INFO L87 Difference]: Start difference. First operand 2853 states and 7843 transitions. Second operand has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:27,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:27,864 INFO L93 Difference]: Finished difference Result 4171 states and 10682 transitions. [2021-06-05 07:59:27,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 07:59:27,864 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-06-05 07:59:27,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:27,868 INFO L225 Difference]: With dead ends: 4171 [2021-06-05 07:59:27,868 INFO L226 Difference]: Without dead ends: 3901 [2021-06-05 07:59:27,868 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 498.2ms TimeCoverageRelationStatistics Valid=555, Invalid=1797, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 07:59:27,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3901 states. [2021-06-05 07:59:27,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3901 to 2928. [2021-06-05 07:59:27,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2928 states, 2927 states have (on average 2.756405876323881) internal successors, (8068), 2927 states have internal predecessors, (8068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:27,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 8068 transitions. [2021-06-05 07:59:27,898 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 8068 transitions. Word has length 110 [2021-06-05 07:59:27,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:27,898 INFO L482 AbstractCegarLoop]: Abstraction has 2928 states and 8068 transitions. [2021-06-05 07:59:27,898 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:27,898 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 8068 transitions. [2021-06-05 07:59:27,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-06-05 07:59:27,900 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:27,900 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:28,100 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 125 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2021-06-05 07:59:28,101 INFO L430 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:28,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:28,101 INFO L82 PathProgramCache]: Analyzing trace with hash -2028281207, now seen corresponding path program 122 times [2021-06-05 07:59:28,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:28,101 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804454797] [2021-06-05 07:59:28,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:28,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:28,241 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:28,241 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:28,241 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804454797] [2021-06-05 07:59:28,241 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804454797] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:28,241 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360343228] [2021-06-05 07:59:28,241 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:28,300 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:59:28,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:28,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 22 conjunts are in the unsatisfiable core [2021-06-05 07:59:28,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:28,449 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:28,449 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360343228] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:28,449 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:28,450 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-06-05 07:59:28,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953488559] [2021-06-05 07:59:28,450 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 07:59:28,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:28,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 07:59:28,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2021-06-05 07:59:28,450 INFO L87 Difference]: Start difference. First operand 2928 states and 8068 transitions. Second operand has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:28,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:28,833 INFO L93 Difference]: Finished difference Result 4196 states and 10807 transitions. [2021-06-05 07:59:28,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 07:59:28,834 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-06-05 07:59:28,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:28,838 INFO L225 Difference]: With dead ends: 4196 [2021-06-05 07:59:28,838 INFO L226 Difference]: Without dead ends: 3926 [2021-06-05 07:59:28,838 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 392.3ms TimeCoverageRelationStatistics Valid=518, Invalid=1644, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 07:59:28,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3926 states. [2021-06-05 07:59:28,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3926 to 3003. [2021-06-05 07:59:28,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3003 states, 3002 states have (on average 2.762491672218521) internal successors, (8293), 3002 states have internal predecessors, (8293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:28,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3003 states to 3003 states and 8293 transitions. [2021-06-05 07:59:28,869 INFO L78 Accepts]: Start accepts. Automaton has 3003 states and 8293 transitions. Word has length 110 [2021-06-05 07:59:28,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:28,869 INFO L482 AbstractCegarLoop]: Abstraction has 3003 states and 8293 transitions. [2021-06-05 07:59:28,869 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:28,869 INFO L276 IsEmpty]: Start isEmpty. Operand 3003 states and 8293 transitions. [2021-06-05 07:59:28,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-06-05 07:59:28,871 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:28,871 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:29,072 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,126 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:29,072 INFO L430 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:29,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:29,073 INFO L82 PathProgramCache]: Analyzing trace with hash -701525671, now seen corresponding path program 123 times [2021-06-05 07:59:29,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:29,073 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665950257] [2021-06-05 07:59:29,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:29,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:29,219 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:29,219 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:29,219 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665950257] [2021-06-05 07:59:29,219 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665950257] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:29,219 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980198397] [2021-06-05 07:59:29,219 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:29,282 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-06-05 07:59:29,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:29,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 31 conjunts are in the unsatisfiable core [2021-06-05 07:59:29,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:29,436 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:29,436 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980198397] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:29,436 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:29,436 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-06-05 07:59:29,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651045595] [2021-06-05 07:59:29,436 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 07:59:29,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:29,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 07:59:29,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2021-06-05 07:59:29,437 INFO L87 Difference]: Start difference. First operand 3003 states and 8293 transitions. Second operand has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:29,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:29,933 INFO L93 Difference]: Finished difference Result 4221 states and 10932 transitions. [2021-06-05 07:59:29,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 07:59:29,933 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-06-05 07:59:29,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:29,937 INFO L225 Difference]: With dead ends: 4221 [2021-06-05 07:59:29,937 INFO L226 Difference]: Without dead ends: 3951 [2021-06-05 07:59:29,937 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 491.1ms TimeCoverageRelationStatistics Valid=528, Invalid=1824, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 07:59:29,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3951 states. [2021-06-05 07:59:29,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3951 to 3078. [2021-06-05 07:59:29,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3078 states, 3077 states have (on average 2.7682807929801756) internal successors, (8518), 3077 states have internal predecessors, (8518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:29,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3078 states to 3078 states and 8518 transitions. [2021-06-05 07:59:29,971 INFO L78 Accepts]: Start accepts. Automaton has 3078 states and 8518 transitions. Word has length 110 [2021-06-05 07:59:29,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:29,971 INFO L482 AbstractCegarLoop]: Abstraction has 3078 states and 8518 transitions. [2021-06-05 07:59:29,972 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:29,972 INFO L276 IsEmpty]: Start isEmpty. Operand 3078 states and 8518 transitions. [2021-06-05 07:59:29,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-06-05 07:59:29,974 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:29,974 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:30,174 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,127 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:30,174 INFO L430 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:30,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:30,175 INFO L82 PathProgramCache]: Analyzing trace with hash -247309497, now seen corresponding path program 124 times [2021-06-05 07:59:30,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:30,175 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171925834] [2021-06-05 07:59:30,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:30,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:30,310 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:30,311 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:30,311 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171925834] [2021-06-05 07:59:30,311 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171925834] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:30,311 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760235183] [2021-06-05 07:59:30,311 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:30,382 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:59:30,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:30,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 22 conjunts are in the unsatisfiable core [2021-06-05 07:59:30,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:30,510 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:30,510 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760235183] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:30,510 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:30,510 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-06-05 07:59:30,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536308355] [2021-06-05 07:59:30,510 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 07:59:30,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:30,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 07:59:30,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2021-06-05 07:59:30,511 INFO L87 Difference]: Start difference. First operand 3078 states and 8518 transitions. Second operand has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:30,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:30,929 INFO L93 Difference]: Finished difference Result 4246 states and 11057 transitions. [2021-06-05 07:59:30,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 07:59:30,929 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-06-05 07:59:30,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:30,932 INFO L225 Difference]: With dead ends: 4246 [2021-06-05 07:59:30,933 INFO L226 Difference]: Without dead ends: 3976 [2021-06-05 07:59:30,933 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 412.0ms TimeCoverageRelationStatistics Valid=574, Invalid=1778, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 07:59:30,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3976 states. [2021-06-05 07:59:30,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3976 to 3153. [2021-06-05 07:59:30,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3153 states, 3152 states have (on average 2.7737944162436547) internal successors, (8743), 3152 states have internal predecessors, (8743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:30,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3153 states to 3153 states and 8743 transitions. [2021-06-05 07:59:30,979 INFO L78 Accepts]: Start accepts. Automaton has 3153 states and 8743 transitions. Word has length 110 [2021-06-05 07:59:30,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:30,979 INFO L482 AbstractCegarLoop]: Abstraction has 3153 states and 8743 transitions. [2021-06-05 07:59:30,979 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:30,979 INFO L276 IsEmpty]: Start isEmpty. Operand 3153 states and 8743 transitions. [2021-06-05 07:59:30,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-06-05 07:59:30,981 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:30,981 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:31,181 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,128 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:31,182 INFO L430 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:31,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:31,182 INFO L82 PathProgramCache]: Analyzing trace with hash 751586839, now seen corresponding path program 125 times [2021-06-05 07:59:31,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:31,182 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695804441] [2021-06-05 07:59:31,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:31,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:31,322 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:31,322 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:31,322 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695804441] [2021-06-05 07:59:31,322 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695804441] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:31,322 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26223611] [2021-06-05 07:59:31,322 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:31,382 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-06-05 07:59:31,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:31,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 22 conjunts are in the unsatisfiable core [2021-06-05 07:59:31,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:31,525 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:31,525 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26223611] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:31,525 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:31,525 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-06-05 07:59:31,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522917333] [2021-06-05 07:59:31,525 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 07:59:31,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:31,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 07:59:31,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2021-06-05 07:59:31,525 INFO L87 Difference]: Start difference. First operand 3153 states and 8743 transitions. Second operand has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:32,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:32,068 INFO L93 Difference]: Finished difference Result 4271 states and 11182 transitions. [2021-06-05 07:59:32,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 07:59:32,068 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-06-05 07:59:32,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:32,072 INFO L225 Difference]: With dead ends: 4271 [2021-06-05 07:59:32,072 INFO L226 Difference]: Without dead ends: 4001 [2021-06-05 07:59:32,073 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 537.2ms TimeCoverageRelationStatistics Valid=667, Invalid=2089, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 07:59:32,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4001 states. [2021-06-05 07:59:32,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4001 to 3228. [2021-06-05 07:59:32,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3228 states, 3227 states have (on average 2.779051750852185) internal successors, (8968), 3227 states have internal predecessors, (8968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:32,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3228 states to 3228 states and 8968 transitions. [2021-06-05 07:59:32,110 INFO L78 Accepts]: Start accepts. Automaton has 3228 states and 8968 transitions. Word has length 110 [2021-06-05 07:59:32,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:32,110 INFO L482 AbstractCegarLoop]: Abstraction has 3228 states and 8968 transitions. [2021-06-05 07:59:32,110 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:32,111 INFO L276 IsEmpty]: Start isEmpty. Operand 3228 states and 8968 transitions. [2021-06-05 07:59:32,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-06-05 07:59:32,113 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:32,113 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:32,313 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2021-06-05 07:59:32,313 INFO L430 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:32,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:32,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1127741051, now seen corresponding path program 126 times [2021-06-05 07:59:32,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:32,314 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044842645] [2021-06-05 07:59:32,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:32,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:32,448 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:32,448 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:32,448 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044842645] [2021-06-05 07:59:32,448 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044842645] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:32,448 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855050149] [2021-06-05 07:59:32,448 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:32,508 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-06-05 07:59:32,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:32,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 07:59:32,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:32,632 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:32,632 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855050149] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:32,632 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:32,632 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-06-05 07:59:32,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090556481] [2021-06-05 07:59:32,632 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 07:59:32,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:32,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 07:59:32,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2021-06-05 07:59:32,633 INFO L87 Difference]: Start difference. First operand 3228 states and 8968 transitions. Second operand has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:33,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:33,126 INFO L93 Difference]: Finished difference Result 4296 states and 11307 transitions. [2021-06-05 07:59:33,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 07:59:33,127 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-06-05 07:59:33,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:33,130 INFO L225 Difference]: With dead ends: 4296 [2021-06-05 07:59:33,130 INFO L226 Difference]: Without dead ends: 4026 [2021-06-05 07:59:33,131 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 588 ImplicationChecksByTransitivity, 464.4ms TimeCoverageRelationStatistics Valid=646, Invalid=1904, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 07:59:33,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4026 states. [2021-06-05 07:59:33,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4026 to 3303. [2021-06-05 07:59:33,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3303 states, 3302 states have (on average 2.784070260448213) internal successors, (9193), 3302 states have internal predecessors, (9193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:33,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3303 states to 3303 states and 9193 transitions. [2021-06-05 07:59:33,165 INFO L78 Accepts]: Start accepts. Automaton has 3303 states and 9193 transitions. Word has length 110 [2021-06-05 07:59:33,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:33,165 INFO L482 AbstractCegarLoop]: Abstraction has 3303 states and 9193 transitions. [2021-06-05 07:59:33,165 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:33,165 INFO L276 IsEmpty]: Start isEmpty. Operand 3303 states and 9193 transitions. [2021-06-05 07:59:33,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-06-05 07:59:33,167 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:33,167 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:33,367 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2021-06-05 07:59:33,368 INFO L430 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:33,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:33,368 INFO L82 PathProgramCache]: Analyzing trace with hash 902578261, now seen corresponding path program 127 times [2021-06-05 07:59:33,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:33,368 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887833211] [2021-06-05 07:59:33,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:33,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:33,505 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:33,505 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:33,505 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887833211] [2021-06-05 07:59:33,505 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887833211] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:33,505 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856594812] [2021-06-05 07:59:33,505 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:33,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:33,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 22 conjunts are in the unsatisfiable core [2021-06-05 07:59:33,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:33,699 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:33,699 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856594812] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:33,699 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:33,699 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-06-05 07:59:33,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202893876] [2021-06-05 07:59:33,700 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 07:59:33,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:33,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 07:59:33,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2021-06-05 07:59:33,700 INFO L87 Difference]: Start difference. First operand 3303 states and 9193 transitions. Second operand has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:34,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:34,290 INFO L93 Difference]: Finished difference Result 4321 states and 11432 transitions. [2021-06-05 07:59:34,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 07:59:34,291 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-06-05 07:59:34,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:34,295 INFO L225 Difference]: With dead ends: 4321 [2021-06-05 07:59:34,295 INFO L226 Difference]: Without dead ends: 4051 [2021-06-05 07:59:34,295 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 683 ImplicationChecksByTransitivity, 572.0ms TimeCoverageRelationStatistics Valid=747, Invalid=2223, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 07:59:34,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4051 states. [2021-06-05 07:59:34,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4051 to 3378. [2021-06-05 07:59:34,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3378 states, 3377 states have (on average 2.788865857269766) internal successors, (9418), 3377 states have internal predecessors, (9418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:34,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3378 states to 3378 states and 9418 transitions. [2021-06-05 07:59:34,330 INFO L78 Accepts]: Start accepts. Automaton has 3378 states and 9418 transitions. Word has length 110 [2021-06-05 07:59:34,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:34,330 INFO L482 AbstractCegarLoop]: Abstraction has 3378 states and 9418 transitions. [2021-06-05 07:59:34,330 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:34,330 INFO L276 IsEmpty]: Start isEmpty. Operand 3378 states and 9418 transitions. [2021-06-05 07:59:34,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-06-05 07:59:34,332 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:34,332 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:34,533 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135,131 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:34,533 INFO L430 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:34,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:34,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1516817731, now seen corresponding path program 128 times [2021-06-05 07:59:34,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:34,533 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926758764] [2021-06-05 07:59:34,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:34,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:34,679 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:34,680 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:34,680 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926758764] [2021-06-05 07:59:34,680 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926758764] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:34,680 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259206543] [2021-06-05 07:59:34,680 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:34,734 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:59:34,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:34,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 22 conjunts are in the unsatisfiable core [2021-06-05 07:59:34,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:34,857 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:34,857 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259206543] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:34,857 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:34,857 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-06-05 07:59:34,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878870930] [2021-06-05 07:59:34,857 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 07:59:34,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:34,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 07:59:34,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2021-06-05 07:59:34,858 INFO L87 Difference]: Start difference. First operand 3378 states and 9418 transitions. Second operand has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:35,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:35,335 INFO L93 Difference]: Finished difference Result 4391 states and 11677 transitions. [2021-06-05 07:59:35,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 07:59:35,335 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-06-05 07:59:35,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:35,339 INFO L225 Difference]: With dead ends: 4391 [2021-06-05 07:59:35,339 INFO L226 Difference]: Without dead ends: 4121 [2021-06-05 07:59:35,339 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 663 ImplicationChecksByTransitivity, 477.8ms TimeCoverageRelationStatistics Valid=734, Invalid=2022, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 07:59:35,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4121 states. [2021-06-05 07:59:35,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4121 to 3453. [2021-06-05 07:59:35,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3453 states, 3452 states have (on average 2.7977983777520277) internal successors, (9658), 3452 states have internal predecessors, (9658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:35,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3453 states to 3453 states and 9658 transitions. [2021-06-05 07:59:35,375 INFO L78 Accepts]: Start accepts. Automaton has 3453 states and 9658 transitions. Word has length 110 [2021-06-05 07:59:35,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:35,375 INFO L482 AbstractCegarLoop]: Abstraction has 3453 states and 9658 transitions. [2021-06-05 07:59:35,375 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:35,375 INFO L276 IsEmpty]: Start isEmpty. Operand 3453 states and 9658 transitions. [2021-06-05 07:59:35,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-06-05 07:59:35,377 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:35,377 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:35,578 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 132 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2021-06-05 07:59:35,578 INFO L430 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:35,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:35,578 INFO L82 PathProgramCache]: Analyzing trace with hash -198424557, now seen corresponding path program 129 times [2021-06-05 07:59:35,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:35,578 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520709811] [2021-06-05 07:59:35,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:35,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:35,705 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:35,706 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:35,706 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520709811] [2021-06-05 07:59:35,706 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520709811] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:35,706 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166250533] [2021-06-05 07:59:35,706 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:35,770 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-06-05 07:59:35,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:35,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 07:59:35,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:35,904 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:35,904 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166250533] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:35,904 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:35,904 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-06-05 07:59:35,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139784140] [2021-06-05 07:59:35,909 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 07:59:35,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:35,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 07:59:35,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2021-06-05 07:59:35,909 INFO L87 Difference]: Start difference. First operand 3453 states and 9658 transitions. Second operand has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:36,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:36,570 INFO L93 Difference]: Finished difference Result 4969 states and 13303 transitions. [2021-06-05 07:59:36,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 07:59:36,570 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-06-05 07:59:36,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:36,574 INFO L225 Difference]: With dead ends: 4969 [2021-06-05 07:59:36,574 INFO L226 Difference]: Without dead ends: 4346 [2021-06-05 07:59:36,575 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 743 ImplicationChecksByTransitivity, 580.0ms TimeCoverageRelationStatistics Valid=737, Invalid=2455, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 07:59:36,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4346 states. [2021-06-05 07:59:36,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4346 to 3528. [2021-06-05 07:59:36,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3528 states, 3527 states have (on average 2.8035157357527645) internal successors, (9888), 3527 states have internal predecessors, (9888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:36,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3528 states to 3528 states and 9888 transitions. [2021-06-05 07:59:36,609 INFO L78 Accepts]: Start accepts. Automaton has 3528 states and 9888 transitions. Word has length 110 [2021-06-05 07:59:36,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:36,609 INFO L482 AbstractCegarLoop]: Abstraction has 3528 states and 9888 transitions. [2021-06-05 07:59:36,609 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:36,609 INFO L276 IsEmpty]: Start isEmpty. Operand 3528 states and 9888 transitions. [2021-06-05 07:59:36,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-06-05 07:59:36,612 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:36,612 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:36,816 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable137 [2021-06-05 07:59:36,817 INFO L430 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:36,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:36,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1231072159, now seen corresponding path program 130 times [2021-06-05 07:59:36,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:36,817 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644815384] [2021-06-05 07:59:36,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:36,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:36,984 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:36,984 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:36,984 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644815384] [2021-06-05 07:59:36,984 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644815384] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:36,984 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187126749] [2021-06-05 07:59:36,984 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:37,038 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:59:37,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:37,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 22 conjunts are in the unsatisfiable core [2021-06-05 07:59:37,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:37,160 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:37,160 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187126749] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:37,161 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:37,161 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-06-05 07:59:37,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478708652] [2021-06-05 07:59:37,161 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 07:59:37,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:37,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 07:59:37,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2021-06-05 07:59:37,161 INFO L87 Difference]: Start difference. First operand 3528 states and 9888 transitions. Second operand has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:37,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:37,693 INFO L93 Difference]: Finished difference Result 5198 states and 14021 transitions. [2021-06-05 07:59:37,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 07:59:37,694 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-06-05 07:59:37,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:37,699 INFO L225 Difference]: With dead ends: 5198 [2021-06-05 07:59:37,699 INFO L226 Difference]: Without dead ends: 4928 [2021-06-05 07:59:37,699 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 741 ImplicationChecksByTransitivity, 507.9ms TimeCoverageRelationStatistics Valid=839, Invalid=2131, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 07:59:37,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4928 states. [2021-06-05 07:59:37,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4928 to 3708. [2021-06-05 07:59:37,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3708 states, 3707 states have (on average 2.8181818181818183) internal successors, (10447), 3707 states have internal predecessors, (10447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:37,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3708 states to 3708 states and 10447 transitions. [2021-06-05 07:59:37,738 INFO L78 Accepts]: Start accepts. Automaton has 3708 states and 10447 transitions. Word has length 110 [2021-06-05 07:59:37,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:37,738 INFO L482 AbstractCegarLoop]: Abstraction has 3708 states and 10447 transitions. [2021-06-05 07:59:37,738 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:37,738 INFO L276 IsEmpty]: Start isEmpty. Operand 3708 states and 10447 transitions. [2021-06-05 07:59:37,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-06-05 07:59:37,741 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:37,741 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:37,941 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 134 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2021-06-05 07:59:37,942 INFO L430 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:37,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:37,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1208728909, now seen corresponding path program 131 times [2021-06-05 07:59:37,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:37,942 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996727251] [2021-06-05 07:59:37,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:37,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:38,089 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:38,089 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:38,089 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996727251] [2021-06-05 07:59:38,089 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996727251] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:38,089 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047581052] [2021-06-05 07:59:38,089 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:38,145 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-06-05 07:59:38,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:38,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 22 conjunts are in the unsatisfiable core [2021-06-05 07:59:38,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:38,278 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:38,279 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047581052] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:38,279 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:38,279 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-06-05 07:59:38,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222127689] [2021-06-05 07:59:38,279 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 07:59:38,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:38,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 07:59:38,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2021-06-05 07:59:38,279 INFO L87 Difference]: Start difference. First operand 3708 states and 10447 transitions. Second operand has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:39,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:39,009 INFO L93 Difference]: Finished difference Result 5021 states and 13521 transitions. [2021-06-05 07:59:39,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 07:59:39,009 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-06-05 07:59:39,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:39,014 INFO L225 Difference]: With dead ends: 5021 [2021-06-05 07:59:39,014 INFO L226 Difference]: Without dead ends: 4446 [2021-06-05 07:59:39,015 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 966 ImplicationChecksByTransitivity, 703.5ms TimeCoverageRelationStatistics Valid=997, Invalid=2785, Unknown=0, NotChecked=0, Total=3782 [2021-06-05 07:59:39,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4446 states. [2021-06-05 07:59:39,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4446 to 2603. [2021-06-05 07:59:39,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2603 states, 2602 states have (on average 2.735588009223674) internal successors, (7118), 2602 states have internal predecessors, (7118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:39,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2603 states to 2603 states and 7118 transitions. [2021-06-05 07:59:39,044 INFO L78 Accepts]: Start accepts. Automaton has 2603 states and 7118 transitions. Word has length 110 [2021-06-05 07:59:39,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:39,044 INFO L482 AbstractCegarLoop]: Abstraction has 2603 states and 7118 transitions. [2021-06-05 07:59:39,044 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:39,044 INFO L276 IsEmpty]: Start isEmpty. Operand 2603 states and 7118 transitions. [2021-06-05 07:59:39,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-06-05 07:59:39,046 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:39,046 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:39,246 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139,135 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:39,246 INFO L430 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:39,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:39,247 INFO L82 PathProgramCache]: Analyzing trace with hash -207372468, now seen corresponding path program 132 times [2021-06-05 07:59:39,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:39,247 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082858450] [2021-06-05 07:59:39,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:39,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:39,413 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:39,414 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:39,414 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082858450] [2021-06-05 07:59:39,414 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082858450] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:39,414 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4135614] [2021-06-05 07:59:39,414 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:39,475 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-06-05 07:59:39,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:39,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 07:59:39,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:39,618 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:39,619 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4135614] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:39,619 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:39,619 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-06-05 07:59:39,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129765280] [2021-06-05 07:59:39,619 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 07:59:39,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:39,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 07:59:39,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2021-06-05 07:59:39,619 INFO L87 Difference]: Start difference. First operand 2603 states and 7118 transitions. Second operand has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:39,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:39,971 INFO L93 Difference]: Finished difference Result 3821 states and 9757 transitions. [2021-06-05 07:59:39,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 07:59:39,971 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-06-05 07:59:39,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:39,974 INFO L225 Difference]: With dead ends: 3821 [2021-06-05 07:59:39,974 INFO L226 Difference]: Without dead ends: 3551 [2021-06-05 07:59:39,974 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 385.5ms TimeCoverageRelationStatistics Valid=508, Invalid=1472, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 07:59:39,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3551 states. [2021-06-05 07:59:39,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3551 to 2678. [2021-06-05 07:59:39,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2678 states, 2677 states have (on average 2.742995890922675) internal successors, (7343), 2677 states have internal predecessors, (7343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:39,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2678 states to 2678 states and 7343 transitions. [2021-06-05 07:59:39,999 INFO L78 Accepts]: Start accepts. Automaton has 2678 states and 7343 transitions. Word has length 115 [2021-06-05 07:59:39,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:39,999 INFO L482 AbstractCegarLoop]: Abstraction has 2678 states and 7343 transitions. [2021-06-05 07:59:40,000 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:40,000 INFO L276 IsEmpty]: Start isEmpty. Operand 2678 states and 7343 transitions. [2021-06-05 07:59:40,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-06-05 07:59:40,001 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:40,001 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:40,206 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,136 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:40,206 INFO L430 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:40,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:40,206 INFO L82 PathProgramCache]: Analyzing trace with hash -587816420, now seen corresponding path program 133 times [2021-06-05 07:59:40,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:40,207 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141312439] [2021-06-05 07:59:40,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:40,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:40,393 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:40,393 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:40,393 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141312439] [2021-06-05 07:59:40,393 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141312439] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:40,393 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903724782] [2021-06-05 07:59:40,393 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:40,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:40,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 07:59:40,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:40,600 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:40,600 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903724782] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:40,601 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:40,601 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 24 [2021-06-05 07:59:40,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609112340] [2021-06-05 07:59:40,601 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-05 07:59:40,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:40,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-05 07:59:40,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=447, Unknown=0, NotChecked=0, Total=552 [2021-06-05 07:59:40,601 INFO L87 Difference]: Start difference. First operand 2678 states and 7343 transitions. Second operand has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:40,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:40,979 INFO L93 Difference]: Finished difference Result 4241 states and 10672 transitions. [2021-06-05 07:59:40,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 07:59:40,979 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-06-05 07:59:40,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:40,983 INFO L225 Difference]: With dead ends: 4241 [2021-06-05 07:59:40,983 INFO L226 Difference]: Without dead ends: 3971 [2021-06-05 07:59:40,983 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 444.9ms TimeCoverageRelationStatistics Valid=560, Invalid=1696, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 07:59:40,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3971 states. [2021-06-05 07:59:41,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3971 to 2753. [2021-06-05 07:59:41,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2753 states, 2752 states have (on average 2.75) internal successors, (7568), 2752 states have internal predecessors, (7568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:41,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2753 states to 2753 states and 7568 transitions. [2021-06-05 07:59:41,016 INFO L78 Accepts]: Start accepts. Automaton has 2753 states and 7568 transitions. Word has length 115 [2021-06-05 07:59:41,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:41,016 INFO L482 AbstractCegarLoop]: Abstraction has 2753 states and 7568 transitions. [2021-06-05 07:59:41,016 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:41,016 INFO L276 IsEmpty]: Start isEmpty. Operand 2753 states and 7568 transitions. [2021-06-05 07:59:41,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-06-05 07:59:41,018 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:41,018 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:41,218 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,137 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:41,219 INFO L430 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:41,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:41,219 INFO L82 PathProgramCache]: Analyzing trace with hash 36558730, now seen corresponding path program 134 times [2021-06-05 07:59:41,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:41,219 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351257273] [2021-06-05 07:59:41,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:41,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:41,382 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:41,382 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:41,382 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351257273] [2021-06-05 07:59:41,382 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351257273] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:41,383 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278931251] [2021-06-05 07:59:41,383 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:41,446 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:59:41,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:41,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 07:59:41,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:41,589 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:41,589 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278931251] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:41,589 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:41,589 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-06-05 07:59:41,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377107888] [2021-06-05 07:59:41,589 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 07:59:41,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:41,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 07:59:41,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2021-06-05 07:59:41,590 INFO L87 Difference]: Start difference. First operand 2753 states and 7568 transitions. Second operand has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:41,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:41,929 INFO L93 Difference]: Finished difference Result 4271 states and 10807 transitions. [2021-06-05 07:59:41,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 07:59:41,930 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-06-05 07:59:41,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:41,933 INFO L225 Difference]: With dead ends: 4271 [2021-06-05 07:59:41,933 INFO L226 Difference]: Without dead ends: 4001 [2021-06-05 07:59:41,933 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 368.3ms TimeCoverageRelationStatistics Valid=560, Invalid=1696, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 07:59:41,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4001 states. [2021-06-05 07:59:41,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4001 to 2828. [2021-06-05 07:59:41,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2828 states, 2827 states have (on average 2.75663247258578) internal successors, (7793), 2827 states have internal predecessors, (7793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:41,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2828 states to 2828 states and 7793 transitions. [2021-06-05 07:59:41,963 INFO L78 Accepts]: Start accepts. Automaton has 2828 states and 7793 transitions. Word has length 115 [2021-06-05 07:59:41,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:41,963 INFO L482 AbstractCegarLoop]: Abstraction has 2828 states and 7793 transitions. [2021-06-05 07:59:41,963 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:41,963 INFO L276 IsEmpty]: Start isEmpty. Operand 2828 states and 7793 transitions. [2021-06-05 07:59:41,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-06-05 07:59:41,965 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:41,965 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:42,165 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable142 [2021-06-05 07:59:42,165 INFO L430 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:42,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:42,166 INFO L82 PathProgramCache]: Analyzing trace with hash 845610586, now seen corresponding path program 135 times [2021-06-05 07:59:42,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:42,166 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134819556] [2021-06-05 07:59:42,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:42,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:42,337 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:42,337 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:42,337 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134819556] [2021-06-05 07:59:42,337 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134819556] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:42,337 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428327665] [2021-06-05 07:59:42,337 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:42,398 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-06-05 07:59:42,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:42,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-05 07:59:42,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:42,549 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:42,550 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428327665] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:42,550 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:42,550 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 24 [2021-06-05 07:59:42,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707007317] [2021-06-05 07:59:42,550 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-05 07:59:42,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:42,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-05 07:59:42,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2021-06-05 07:59:42,550 INFO L87 Difference]: Start difference. First operand 2828 states and 7793 transitions. Second operand has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:42,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:42,978 INFO L93 Difference]: Finished difference Result 4296 states and 10932 transitions. [2021-06-05 07:59:42,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 07:59:42,978 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-06-05 07:59:42,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:42,982 INFO L225 Difference]: With dead ends: 4296 [2021-06-05 07:59:42,982 INFO L226 Difference]: Without dead ends: 4026 [2021-06-05 07:59:42,982 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 474.8ms TimeCoverageRelationStatistics Valid=577, Invalid=1873, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 07:59:42,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4026 states. [2021-06-05 07:59:43,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4026 to 2903. [2021-06-05 07:59:43,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2903 states, 2902 states have (on average 2.7629221226740177) internal successors, (8018), 2902 states have internal predecessors, (8018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:43,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2903 states to 2903 states and 8018 transitions. [2021-06-05 07:59:43,013 INFO L78 Accepts]: Start accepts. Automaton has 2903 states and 8018 transitions. Word has length 115 [2021-06-05 07:59:43,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:43,013 INFO L482 AbstractCegarLoop]: Abstraction has 2903 states and 8018 transitions. [2021-06-05 07:59:43,013 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:43,013 INFO L276 IsEmpty]: Start isEmpty. Operand 2903 states and 8018 transitions. [2021-06-05 07:59:43,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-06-05 07:59:43,015 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:43,015 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:43,215 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143,139 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:43,215 INFO L430 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:43,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:43,216 INFO L82 PathProgramCache]: Analyzing trace with hash -546339512, now seen corresponding path program 136 times [2021-06-05 07:59:43,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:43,216 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170726626] [2021-06-05 07:59:43,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:43,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:43,376 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:43,376 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:43,376 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170726626] [2021-06-05 07:59:43,376 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170726626] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:43,376 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220679531] [2021-06-05 07:59:43,377 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:43,432 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:59:43,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:43,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 07:59:43,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:43,570 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:43,570 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220679531] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:43,570 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:43,570 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-06-05 07:59:43,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847512894] [2021-06-05 07:59:43,571 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 07:59:43,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:43,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 07:59:43,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2021-06-05 07:59:43,571 INFO L87 Difference]: Start difference. First operand 2903 states and 8018 transitions. Second operand has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:43,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:43,967 INFO L93 Difference]: Finished difference Result 4321 states and 11057 transitions. [2021-06-05 07:59:43,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 07:59:43,967 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-06-05 07:59:43,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:43,971 INFO L225 Difference]: With dead ends: 4321 [2021-06-05 07:59:43,971 INFO L226 Difference]: Without dead ends: 4051 [2021-06-05 07:59:43,971 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 539 ImplicationChecksByTransitivity, 408.6ms TimeCoverageRelationStatistics Valid=597, Invalid=1853, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 07:59:43,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4051 states. [2021-06-05 07:59:43,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4051 to 2978. [2021-06-05 07:59:43,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2978 states, 2977 states have (on average 2.7688948605979173) internal successors, (8243), 2977 states have internal predecessors, (8243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:43,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2978 states to 2978 states and 8243 transitions. [2021-06-05 07:59:43,999 INFO L78 Accepts]: Start accepts. Automaton has 2978 states and 8243 transitions. Word has length 115 [2021-06-05 07:59:43,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:43,999 INFO L482 AbstractCegarLoop]: Abstraction has 2978 states and 8243 transitions. [2021-06-05 07:59:43,999 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:44,000 INFO L276 IsEmpty]: Start isEmpty. Operand 2978 states and 8243 transitions. [2021-06-05 07:59:44,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-06-05 07:59:44,001 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:44,002 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:44,202 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 140 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable144 [2021-06-05 07:59:44,202 INFO L430 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:44,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:44,202 INFO L82 PathProgramCache]: Analyzing trace with hash -791416808, now seen corresponding path program 137 times [2021-06-05 07:59:44,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:44,202 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705890325] [2021-06-05 07:59:44,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:44,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:44,363 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:44,363 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:44,363 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705890325] [2021-06-05 07:59:44,363 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705890325] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:44,363 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892609967] [2021-06-05 07:59:44,363 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:44,422 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-06-05 07:59:44,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:44,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 07:59:44,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:44,576 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:44,576 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892609967] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:44,576 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:44,576 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 24 [2021-06-05 07:59:44,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732452485] [2021-06-05 07:59:44,576 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-05 07:59:44,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:44,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-05 07:59:44,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552 [2021-06-05 07:59:44,577 INFO L87 Difference]: Start difference. First operand 2978 states and 8243 transitions. Second operand has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:45,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:45,084 INFO L93 Difference]: Finished difference Result 4346 states and 11182 transitions. [2021-06-05 07:59:45,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 07:59:45,085 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-06-05 07:59:45,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:45,088 INFO L225 Difference]: With dead ends: 4346 [2021-06-05 07:59:45,088 INFO L226 Difference]: Without dead ends: 4076 [2021-06-05 07:59:45,089 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 513.3ms TimeCoverageRelationStatistics Valid=622, Invalid=2030, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 07:59:45,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4076 states. [2021-06-05 07:59:45,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4076 to 3053. [2021-06-05 07:59:45,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3053 states, 3052 states have (on average 2.7745740498034075) internal successors, (8468), 3052 states have internal predecessors, (8468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:45,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3053 states to 3053 states and 8468 transitions. [2021-06-05 07:59:45,117 INFO L78 Accepts]: Start accepts. Automaton has 3053 states and 8468 transitions. Word has length 115 [2021-06-05 07:59:45,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:45,118 INFO L482 AbstractCegarLoop]: Abstraction has 3053 states and 8468 transitions. [2021-06-05 07:59:45,118 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:45,118 INFO L276 IsEmpty]: Start isEmpty. Operand 3053 states and 8468 transitions. [2021-06-05 07:59:45,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-06-05 07:59:45,120 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:45,120 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:45,332 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145,141 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:45,333 INFO L430 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:45,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:45,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1168267130, now seen corresponding path program 138 times [2021-06-05 07:59:45,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:45,333 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554152245] [2021-06-05 07:59:45,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:45,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:45,483 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:45,484 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:45,484 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554152245] [2021-06-05 07:59:45,484 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554152245] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:45,484 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647801693] [2021-06-05 07:59:45,484 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:45,546 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-06-05 07:59:45,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:45,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 07:59:45,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:45,682 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:45,682 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647801693] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:45,682 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:45,682 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-06-05 07:59:45,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266883118] [2021-06-05 07:59:45,683 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 07:59:45,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:45,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 07:59:45,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2021-06-05 07:59:45,683 INFO L87 Difference]: Start difference. First operand 3053 states and 8468 transitions. Second operand has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:46,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:46,113 INFO L93 Difference]: Finished difference Result 4371 states and 11307 transitions. [2021-06-05 07:59:46,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 07:59:46,114 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-06-05 07:59:46,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:46,118 INFO L225 Difference]: With dead ends: 4371 [2021-06-05 07:59:46,118 INFO L226 Difference]: Without dead ends: 4101 [2021-06-05 07:59:46,118 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 619 ImplicationChecksByTransitivity, 437.0ms TimeCoverageRelationStatistics Valid=650, Invalid=2002, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 07:59:46,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4101 states. [2021-06-05 07:59:46,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4101 to 3128. [2021-06-05 07:59:46,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3128 states, 3127 states have (on average 2.7799808122801406) internal successors, (8693), 3127 states have internal predecessors, (8693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:46,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3128 states to 3128 states and 8693 transitions. [2021-06-05 07:59:46,151 INFO L78 Accepts]: Start accepts. Automaton has 3128 states and 8693 transitions. Word has length 115 [2021-06-05 07:59:46,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:46,151 INFO L482 AbstractCegarLoop]: Abstraction has 3128 states and 8693 transitions. [2021-06-05 07:59:46,151 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:46,151 INFO L276 IsEmpty]: Start isEmpty. Operand 3128 states and 8693 transitions. [2021-06-05 07:59:46,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-06-05 07:59:46,153 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:46,153 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:46,353 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 142 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable146 [2021-06-05 07:59:46,353 INFO L430 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:46,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:46,354 INFO L82 PathProgramCache]: Analyzing trace with hash 158488406, now seen corresponding path program 139 times [2021-06-05 07:59:46,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:46,354 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223938397] [2021-06-05 07:59:46,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:46,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:46,512 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:46,512 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:46,512 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223938397] [2021-06-05 07:59:46,512 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223938397] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:46,512 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157927357] [2021-06-05 07:59:46,512 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:46,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:46,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 07:59:46,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:46,729 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:46,729 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157927357] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:46,729 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:46,729 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 24 [2021-06-05 07:59:46,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996268824] [2021-06-05 07:59:46,730 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-05 07:59:46,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:46,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-05 07:59:46,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2021-06-05 07:59:46,730 INFO L87 Difference]: Start difference. First operand 3128 states and 8693 transitions. Second operand has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:47,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:47,274 INFO L93 Difference]: Finished difference Result 4396 states and 11432 transitions. [2021-06-05 07:59:47,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 07:59:47,274 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-06-05 07:59:47,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:47,278 INFO L225 Difference]: With dead ends: 4396 [2021-06-05 07:59:47,278 INFO L226 Difference]: Without dead ends: 4126 [2021-06-05 07:59:47,278 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 640 ImplicationChecksByTransitivity, 536.7ms TimeCoverageRelationStatistics Valid=677, Invalid=2185, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 07:59:47,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4126 states. [2021-06-05 07:59:47,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4126 to 3203. [2021-06-05 07:59:47,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3203 states, 3202 states have (on average 2.7851342910680823) internal successors, (8918), 3202 states have internal predecessors, (8918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:47,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3203 states to 3203 states and 8918 transitions. [2021-06-05 07:59:47,312 INFO L78 Accepts]: Start accepts. Automaton has 3203 states and 8918 transitions. Word has length 115 [2021-06-05 07:59:47,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:47,312 INFO L482 AbstractCegarLoop]: Abstraction has 3203 states and 8918 transitions. [2021-06-05 07:59:47,312 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:47,312 INFO L276 IsEmpty]: Start isEmpty. Operand 3203 states and 8918 transitions. [2021-06-05 07:59:47,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-06-05 07:59:47,314 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:47,314 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:47,523 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 143 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147 [2021-06-05 07:59:47,523 INFO L430 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:47,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:47,523 INFO L82 PathProgramCache]: Analyzing trace with hash 612704580, now seen corresponding path program 140 times [2021-06-05 07:59:47,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:47,523 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888994602] [2021-06-05 07:59:47,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:47,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:47,668 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:47,668 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:47,668 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888994602] [2021-06-05 07:59:47,668 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888994602] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:47,669 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102210789] [2021-06-05 07:59:47,669 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:47,725 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:59:47,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:47,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 07:59:47,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:47,861 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:47,861 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102210789] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:47,861 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:47,861 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-06-05 07:59:47,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160141513] [2021-06-05 07:59:47,861 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 07:59:47,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:47,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 07:59:47,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2021-06-05 07:59:47,862 INFO L87 Difference]: Start difference. First operand 3203 states and 8918 transitions. Second operand has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:48,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:48,350 INFO L93 Difference]: Finished difference Result 4421 states and 11557 transitions. [2021-06-05 07:59:48,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 07:59:48,350 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-06-05 07:59:48,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:48,353 INFO L225 Difference]: With dead ends: 4421 [2021-06-05 07:59:48,353 INFO L226 Difference]: Without dead ends: 4151 [2021-06-05 07:59:48,353 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 477.7ms TimeCoverageRelationStatistics Valid=719, Invalid=2143, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 07:59:48,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4151 states. [2021-06-05 07:59:48,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4151 to 3278. [2021-06-05 07:59:48,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3278 states, 3277 states have (on average 2.790051876716509) internal successors, (9143), 3277 states have internal predecessors, (9143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:48,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3278 states to 3278 states and 9143 transitions. [2021-06-05 07:59:48,387 INFO L78 Accepts]: Start accepts. Automaton has 3278 states and 9143 transitions. Word has length 115 [2021-06-05 07:59:48,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:48,387 INFO L482 AbstractCegarLoop]: Abstraction has 3278 states and 9143 transitions. [2021-06-05 07:59:48,387 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:48,387 INFO L276 IsEmpty]: Start isEmpty. Operand 3278 states and 9143 transitions. [2021-06-05 07:59:48,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-06-05 07:59:48,389 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:48,389 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:48,602 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148,144 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:48,602 INFO L430 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:48,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:48,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1611600916, now seen corresponding path program 141 times [2021-06-05 07:59:48,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:48,602 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877306420] [2021-06-05 07:59:48,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:48,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:48,752 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:48,752 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:48,752 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877306420] [2021-06-05 07:59:48,752 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877306420] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:48,752 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328913581] [2021-06-05 07:59:48,752 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:48,819 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-06-05 07:59:48,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:48,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 07:59:48,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:48,961 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:48,961 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328913581] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:48,961 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:48,961 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 24 [2021-06-05 07:59:48,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590376440] [2021-06-05 07:59:48,961 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-05 07:59:48,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:48,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-05 07:59:48,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=467, Unknown=0, NotChecked=0, Total=552 [2021-06-05 07:59:48,962 INFO L87 Difference]: Start difference. First operand 3278 states and 9143 transitions. Second operand has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:49,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:49,533 INFO L93 Difference]: Finished difference Result 4446 states and 11682 transitions. [2021-06-05 07:59:49,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 07:59:49,534 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-06-05 07:59:49,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:49,538 INFO L225 Difference]: With dead ends: 4446 [2021-06-05 07:59:49,538 INFO L226 Difference]: Without dead ends: 4176 [2021-06-05 07:59:49,538 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 707 ImplicationChecksByTransitivity, 555.6ms TimeCoverageRelationStatistics Valid=715, Invalid=2365, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 07:59:49,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4176 states. [2021-06-05 07:59:49,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4176 to 3353. [2021-06-05 07:59:49,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3353 states, 3352 states have (on average 2.7947494033412887) internal successors, (9368), 3352 states have internal predecessors, (9368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:49,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3353 states to 3353 states and 9368 transitions. [2021-06-05 07:59:49,575 INFO L78 Accepts]: Start accepts. Automaton has 3353 states and 9368 transitions. Word has length 115 [2021-06-05 07:59:49,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:49,575 INFO L482 AbstractCegarLoop]: Abstraction has 3353 states and 9368 transitions. [2021-06-05 07:59:49,575 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:49,575 INFO L276 IsEmpty]: Start isEmpty. Operand 3353 states and 9368 transitions. [2021-06-05 07:59:49,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-06-05 07:59:49,577 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:49,577 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:49,784 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 145 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable149 [2021-06-05 07:59:49,785 INFO L430 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:49,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:49,785 INFO L82 PathProgramCache]: Analyzing trace with hash -267726974, now seen corresponding path program 142 times [2021-06-05 07:59:49,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:49,785 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094617814] [2021-06-05 07:59:49,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:49,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:49,927 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:49,927 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:49,927 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094617814] [2021-06-05 07:59:49,927 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094617814] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:49,927 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662888758] [2021-06-05 07:59:49,927 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:49,982 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:59:49,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:49,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 07:59:49,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:50,128 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:50,129 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662888758] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:50,129 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:50,129 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-06-05 07:59:50,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813942168] [2021-06-05 07:59:50,129 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 07:59:50,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:50,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 07:59:50,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2021-06-05 07:59:50,129 INFO L87 Difference]: Start difference. First operand 3353 states and 9368 transitions. Second operand has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:50,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:50,615 INFO L93 Difference]: Finished difference Result 4471 states and 11807 transitions. [2021-06-05 07:59:50,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 07:59:50,615 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-06-05 07:59:50,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:50,619 INFO L225 Difference]: With dead ends: 4471 [2021-06-05 07:59:50,619 INFO L226 Difference]: Without dead ends: 4201 [2021-06-05 07:59:50,619 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 791 ImplicationChecksByTransitivity, 476.5ms TimeCoverageRelationStatistics Valid=804, Invalid=2276, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 07:59:50,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4201 states. [2021-06-05 07:59:50,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4201 to 3428. [2021-06-05 07:59:50,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3428 states, 3427 states have (on average 2.7992413189378467) internal successors, (9593), 3427 states have internal predecessors, (9593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:50,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3428 states to 3428 states and 9593 transitions. [2021-06-05 07:59:50,655 INFO L78 Accepts]: Start accepts. Automaton has 3428 states and 9593 transitions. Word has length 115 [2021-06-05 07:59:50,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:50,655 INFO L482 AbstractCegarLoop]: Abstraction has 3428 states and 9593 transitions. [2021-06-05 07:59:50,655 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:50,655 INFO L276 IsEmpty]: Start isEmpty. Operand 3428 states and 9593 transitions. [2021-06-05 07:59:50,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-06-05 07:59:50,658 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:50,658 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:50,858 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150,146 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:50,858 INFO L430 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:50,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:50,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1762592338, now seen corresponding path program 143 times [2021-06-05 07:59:50,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:50,858 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394748423] [2021-06-05 07:59:50,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:50,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:51,003 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:51,003 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:51,003 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394748423] [2021-06-05 07:59:51,003 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394748423] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:51,003 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184555241] [2021-06-05 07:59:51,003 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:51,067 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-06-05 07:59:51,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:51,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 07:59:51,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:51,222 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:51,222 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184555241] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:51,222 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:51,222 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 24 [2021-06-05 07:59:51,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669553846] [2021-06-05 07:59:51,222 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-05 07:59:51,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:51,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-05 07:59:51,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=462, Unknown=0, NotChecked=0, Total=552 [2021-06-05 07:59:51,223 INFO L87 Difference]: Start difference. First operand 3428 states and 9593 transitions. Second operand has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:51,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:51,855 INFO L93 Difference]: Finished difference Result 4496 states and 11932 transitions. [2021-06-05 07:59:51,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 07:59:51,855 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-06-05 07:59:51,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:51,859 INFO L225 Difference]: With dead ends: 4496 [2021-06-05 07:59:51,859 INFO L226 Difference]: Without dead ends: 4226 [2021-06-05 07:59:51,859 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 818 ImplicationChecksByTransitivity, 599.3ms TimeCoverageRelationStatistics Valid=835, Invalid=2471, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 07:59:51,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4226 states. [2021-06-05 07:59:51,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4226 to 3503. [2021-06-05 07:59:51,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3503 states, 3502 states have (on average 2.803540833809252) internal successors, (9818), 3502 states have internal predecessors, (9818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:51,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3503 states to 3503 states and 9818 transitions. [2021-06-05 07:59:51,895 INFO L78 Accepts]: Start accepts. Automaton has 3503 states and 9818 transitions. Word has length 115 [2021-06-05 07:59:51,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:51,895 INFO L482 AbstractCegarLoop]: Abstraction has 3503 states and 9818 transitions. [2021-06-05 07:59:51,895 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:51,895 INFO L276 IsEmpty]: Start isEmpty. Operand 3503 states and 9818 transitions. [2021-06-05 07:59:51,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-06-05 07:59:51,898 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:51,898 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:52,098 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,147 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:52,099 INFO L430 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:52,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:52,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1918135488, now seen corresponding path program 144 times [2021-06-05 07:59:52,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:52,099 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362640535] [2021-06-05 07:59:52,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:52,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:52,238 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:52,239 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:52,239 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362640535] [2021-06-05 07:59:52,239 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362640535] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:52,239 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528447074] [2021-06-05 07:59:52,239 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:52,301 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-06-05 07:59:52,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:52,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 07:59:52,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:52,429 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:52,429 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528447074] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:52,429 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:52,429 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-06-05 07:59:52,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549289603] [2021-06-05 07:59:52,429 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 07:59:52,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:52,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 07:59:52,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2021-06-05 07:59:52,430 INFO L87 Difference]: Start difference. First operand 3503 states and 9818 transitions. Second operand has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:52,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:52,975 INFO L93 Difference]: Finished difference Result 4566 states and 12177 transitions. [2021-06-05 07:59:52,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 07:59:52,976 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-06-05 07:59:52,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:52,980 INFO L225 Difference]: With dead ends: 4566 [2021-06-05 07:59:52,980 INFO L226 Difference]: Without dead ends: 4296 [2021-06-05 07:59:52,981 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 883 ImplicationChecksByTransitivity, 519.0ms TimeCoverageRelationStatistics Valid=905, Invalid=2401, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 07:59:52,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4296 states. [2021-06-05 07:59:53,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4296 to 3578. [2021-06-05 07:59:53,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3578 states, 3577 states have (on average 2.8118535085266982) internal successors, (10058), 3577 states have internal predecessors, (10058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:53,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3578 states to 3578 states and 10058 transitions. [2021-06-05 07:59:53,018 INFO L78 Accepts]: Start accepts. Automaton has 3578 states and 10058 transitions. Word has length 115 [2021-06-05 07:59:53,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:53,018 INFO L482 AbstractCegarLoop]: Abstraction has 3578 states and 10058 transitions. [2021-06-05 07:59:53,018 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:53,018 INFO L276 IsEmpty]: Start isEmpty. Operand 3578 states and 10058 transitions. [2021-06-05 07:59:53,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-06-05 07:59:53,021 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:53,021 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:53,221 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,148 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:53,221 INFO L430 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:53,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:53,222 INFO L82 PathProgramCache]: Analyzing trace with hash 661589520, now seen corresponding path program 145 times [2021-06-05 07:59:53,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:53,222 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660985677] [2021-06-05 07:59:53,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:53,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:53,375 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:53,375 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:53,375 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660985677] [2021-06-05 07:59:53,375 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660985677] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:53,376 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731300955] [2021-06-05 07:59:53,376 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:53,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:53,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 07:59:53,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:53,589 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:53,590 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731300955] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:53,590 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:53,590 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 24 [2021-06-05 07:59:53,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325447886] [2021-06-05 07:59:53,590 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-05 07:59:53,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:53,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-05 07:59:53,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=453, Unknown=0, NotChecked=0, Total=552 [2021-06-05 07:59:53,590 INFO L87 Difference]: Start difference. First operand 3578 states and 10058 transitions. Second operand has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:54,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:54,312 INFO L93 Difference]: Finished difference Result 5144 states and 13803 transitions. [2021-06-05 07:59:54,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 07:59:54,312 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-06-05 07:59:54,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:54,316 INFO L225 Difference]: With dead ends: 5144 [2021-06-05 07:59:54,317 INFO L226 Difference]: Without dead ends: 4521 [2021-06-05 07:59:54,317 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 984 ImplicationChecksByTransitivity, 674.1ms TimeCoverageRelationStatistics Valid=961, Invalid=2821, Unknown=0, NotChecked=0, Total=3782 [2021-06-05 07:59:54,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4521 states. [2021-06-05 07:59:54,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4521 to 3653. [2021-06-05 07:59:54,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3653 states, 3652 states have (on average 2.8170865279299013) internal successors, (10288), 3652 states have internal predecessors, (10288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:54,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3653 states to 3653 states and 10288 transitions. [2021-06-05 07:59:54,352 INFO L78 Accepts]: Start accepts. Automaton has 3653 states and 10288 transitions. Word has length 115 [2021-06-05 07:59:54,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:54,352 INFO L482 AbstractCegarLoop]: Abstraction has 3653 states and 10288 transitions. [2021-06-05 07:59:54,353 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:54,353 INFO L276 IsEmpty]: Start isEmpty. Operand 3653 states and 10288 transitions. [2021-06-05 07:59:54,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-06-05 07:59:54,355 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:54,355 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:54,556 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,149 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:54,556 INFO L430 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:54,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:54,556 INFO L82 PathProgramCache]: Analyzing trace with hash -371058082, now seen corresponding path program 146 times [2021-06-05 07:59:54,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:54,556 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211524282] [2021-06-05 07:59:54,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:54,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:54,694 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:54,694 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:54,694 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211524282] [2021-06-05 07:59:54,694 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211524282] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:54,694 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905949805] [2021-06-05 07:59:54,694 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:54,751 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:59:54,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:54,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 07:59:54,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:54,886 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:54,886 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905949805] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:54,886 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:54,886 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-06-05 07:59:54,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792232873] [2021-06-05 07:59:54,887 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 07:59:54,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:54,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 07:59:54,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2021-06-05 07:59:54,887 INFO L87 Difference]: Start difference. First operand 3653 states and 10288 transitions. Second operand has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:55,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:55,452 INFO L93 Difference]: Finished difference Result 5348 states and 14471 transitions. [2021-06-05 07:59:55,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 07:59:55,452 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-06-05 07:59:55,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:55,456 INFO L225 Difference]: With dead ends: 5348 [2021-06-05 07:59:55,457 INFO L226 Difference]: Without dead ends: 5078 [2021-06-05 07:59:55,457 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 978 ImplicationChecksByTransitivity, 529.0ms TimeCoverageRelationStatistics Valid=1023, Invalid=2517, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 07:59:55,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5078 states. [2021-06-05 07:59:55,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5078 to 3833. [2021-06-05 07:59:55,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3833 states, 3832 states have (on average 2.8306367432150314) internal successors, (10847), 3832 states have internal predecessors, (10847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:55,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3833 states to 3833 states and 10847 transitions. [2021-06-05 07:59:55,495 INFO L78 Accepts]: Start accepts. Automaton has 3833 states and 10847 transitions. Word has length 115 [2021-06-05 07:59:55,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:55,495 INFO L482 AbstractCegarLoop]: Abstraction has 3833 states and 10847 transitions. [2021-06-05 07:59:55,495 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.086956521739131) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:55,495 INFO L276 IsEmpty]: Start isEmpty. Operand 3833 states and 10847 transitions. [2021-06-05 07:59:55,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-06-05 07:59:55,498 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:55,498 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:55,698 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 150 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable154 [2021-06-05 07:59:55,698 INFO L430 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:55,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:55,699 INFO L82 PathProgramCache]: Analyzing trace with hash -348714832, now seen corresponding path program 147 times [2021-06-05 07:59:55,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:55,699 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039116265] [2021-06-05 07:59:55,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:55,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:55,837 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:55,838 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:55,838 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039116265] [2021-06-05 07:59:55,838 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039116265] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:55,838 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328001803] [2021-06-05 07:59:55,838 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:55,910 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-06-05 07:59:55,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:55,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 07:59:55,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:56,048 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:56,049 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328001803] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:56,049 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:56,049 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 24 [2021-06-05 07:59:56,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607251772] [2021-06-05 07:59:56,049 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-05 07:59:56,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:56,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-05 07:59:56,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-06-05 07:59:56,049 INFO L87 Difference]: Start difference. First operand 3833 states and 10847 transitions. Second operand has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:56,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:56,785 INFO L93 Difference]: Finished difference Result 5216 states and 14136 transitions. [2021-06-05 07:59:56,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 07:59:56,785 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-06-05 07:59:56,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:56,790 INFO L225 Difference]: With dead ends: 5216 [2021-06-05 07:59:56,790 INFO L226 Difference]: Without dead ends: 4641 [2021-06-05 07:59:56,790 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1088 ImplicationChecksByTransitivity, 691.3ms TimeCoverageRelationStatistics Valid=1013, Invalid=3147, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 07:59:56,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4641 states. [2021-06-05 07:59:56,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4641 to 2524. [2021-06-05 07:59:56,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2524 states, 2523 states have (on average 2.737217598097503) internal successors, (6906), 2523 states have internal predecessors, (6906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:56,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2524 states to 2524 states and 6906 transitions. [2021-06-05 07:59:56,820 INFO L78 Accepts]: Start accepts. Automaton has 2524 states and 6906 transitions. Word has length 115 [2021-06-05 07:59:56,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:56,820 INFO L482 AbstractCegarLoop]: Abstraction has 2524 states and 6906 transitions. [2021-06-05 07:59:56,820 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:56,820 INFO L276 IsEmpty]: Start isEmpty. Operand 2524 states and 6906 transitions. [2021-06-05 07:59:56,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-06-05 07:59:56,821 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:56,822 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:57,022 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 151 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable155 [2021-06-05 07:59:57,022 INFO L430 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:57,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:57,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1146705884, now seen corresponding path program 148 times [2021-06-05 07:59:57,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:57,022 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979270194] [2021-06-05 07:59:57,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:57,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:57,235 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:57,235 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:57,235 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979270194] [2021-06-05 07:59:57,235 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979270194] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:57,235 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157676660] [2021-06-05 07:59:57,235 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:57,327 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:59:57,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:57,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 07:59:57,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:57,494 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:57,494 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157676660] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:57,495 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:57,495 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2021-06-05 07:59:57,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138056845] [2021-06-05 07:59:57,495 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-06-05 07:59:57,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:57,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-06-05 07:59:57,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=506, Unknown=0, NotChecked=0, Total=650 [2021-06-05 07:59:57,495 INFO L87 Difference]: Start difference. First operand 2524 states and 6906 transitions. Second operand has 26 states, 26 states have (on average 5.6923076923076925) internal successors, (148), 26 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:57,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:57,909 INFO L93 Difference]: Finished difference Result 3614 states and 9406 transitions. [2021-06-05 07:59:57,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 07:59:57,910 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.6923076923076925) internal successors, (148), 26 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-06-05 07:59:57,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:57,914 INFO L225 Difference]: With dead ends: 3614 [2021-06-05 07:59:57,914 INFO L226 Difference]: Without dead ends: 3280 [2021-06-05 07:59:57,914 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 473.8ms TimeCoverageRelationStatistics Valid=645, Invalid=1805, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 07:59:57,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3280 states. [2021-06-05 07:59:57,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3280 to 2609. [2021-06-05 07:59:57,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2609 states, 2608 states have (on average 2.71319018404908) internal successors, (7076), 2608 states have internal predecessors, (7076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:57,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2609 states to 2609 states and 7076 transitions. [2021-06-05 07:59:57,938 INFO L78 Accepts]: Start accepts. Automaton has 2609 states and 7076 transitions. Word has length 120 [2021-06-05 07:59:57,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:57,938 INFO L482 AbstractCegarLoop]: Abstraction has 2609 states and 7076 transitions. [2021-06-05 07:59:57,938 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 5.6923076923076925) internal successors, (148), 26 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:57,938 INFO L276 IsEmpty]: Start isEmpty. Operand 2609 states and 7076 transitions. [2021-06-05 07:59:57,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-06-05 07:59:57,939 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:57,940 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:58,140 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 152 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable156 [2021-06-05 07:59:58,140 INFO L430 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:58,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:58,140 INFO L82 PathProgramCache]: Analyzing trace with hash 51245472, now seen corresponding path program 149 times [2021-06-05 07:59:58,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:58,140 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438606528] [2021-06-05 07:59:58,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:58,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:58,329 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:58,329 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:58,329 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438606528] [2021-06-05 07:59:58,329 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438606528] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:58,329 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11250717] [2021-06-05 07:59:58,329 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:58,394 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-06-05 07:59:58,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:58,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 07:59:58,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:58,523 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:58,523 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11250717] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:58,523 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:58,523 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2021-06-05 07:59:58,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910732786] [2021-06-05 07:59:58,524 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 07:59:58,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:58,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 07:59:58,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2021-06-05 07:59:58,524 INFO L87 Difference]: Start difference. First operand 2609 states and 7076 transitions. Second operand has 23 states, 23 states have (on average 5.217391304347826) internal successors, (120), 23 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:58,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:58,841 INFO L93 Difference]: Finished difference Result 4436 states and 10987 transitions. [2021-06-05 07:59:58,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 07:59:58,841 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.217391304347826) internal successors, (120), 23 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-06-05 07:59:58,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:58,845 INFO L225 Difference]: With dead ends: 4436 [2021-06-05 07:59:58,845 INFO L226 Difference]: Without dead ends: 4166 [2021-06-05 07:59:58,845 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 365.4ms TimeCoverageRelationStatistics Valid=512, Invalid=1380, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 07:59:58,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4166 states. [2021-06-05 07:59:58,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4166 to 2753. [2021-06-05 07:59:58,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2753 states, 2752 states have (on average 2.722747093023256) internal successors, (7493), 2752 states have internal predecessors, (7493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:58,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2753 states to 2753 states and 7493 transitions. [2021-06-05 07:59:58,870 INFO L78 Accepts]: Start accepts. Automaton has 2753 states and 7493 transitions. Word has length 120 [2021-06-05 07:59:58,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:58,870 INFO L482 AbstractCegarLoop]: Abstraction has 2753 states and 7493 transitions. [2021-06-05 07:59:58,870 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.217391304347826) internal successors, (120), 23 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:58,870 INFO L276 IsEmpty]: Start isEmpty. Operand 2753 states and 7493 transitions. [2021-06-05 07:59:58,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-06-05 07:59:58,872 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:58,872 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 07:59:59,072 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 153 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable157 [2021-06-05 07:59:59,073 INFO L430 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:59:59,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:59:59,073 INFO L82 PathProgramCache]: Analyzing trace with hash -847277968, now seen corresponding path program 150 times [2021-06-05 07:59:59,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:59:59,073 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136256312] [2021-06-05 07:59:59,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:59:59,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:59:59,271 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:59,271 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:59:59,271 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136256312] [2021-06-05 07:59:59,272 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136256312] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:59,272 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284021502] [2021-06-05 07:59:59,272 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:59:59,336 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-06-05 07:59:59,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:59:59,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 07:59:59,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:59:59,485 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:59:59,485 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284021502] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:59:59,485 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:59:59,485 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-06-05 07:59:59,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060962620] [2021-06-05 07:59:59,485 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-05 07:59:59,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:59:59,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-05 07:59:59,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2021-06-05 07:59:59,486 INFO L87 Difference]: Start difference. First operand 2753 states and 7493 transitions. Second operand has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:59,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:59:59,860 INFO L93 Difference]: Finished difference Result 4396 states and 10982 transitions. [2021-06-05 07:59:59,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 07:59:59,860 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-06-05 07:59:59,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:59:59,864 INFO L225 Difference]: With dead ends: 4396 [2021-06-05 07:59:59,864 INFO L226 Difference]: Without dead ends: 4126 [2021-06-05 07:59:59,865 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 453.6ms TimeCoverageRelationStatistics Valid=575, Invalid=1681, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 07:59:59,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4126 states. [2021-06-05 07:59:59,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4126 to 2828. [2021-06-05 07:59:59,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2828 states, 2827 states have (on average 2.73010258224266) internal successors, (7718), 2827 states have internal predecessors, (7718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:59,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2828 states to 2828 states and 7718 transitions. [2021-06-05 07:59:59,892 INFO L78 Accepts]: Start accepts. Automaton has 2828 states and 7718 transitions. Word has length 120 [2021-06-05 07:59:59,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:59:59,892 INFO L482 AbstractCegarLoop]: Abstraction has 2828 states and 7718 transitions. [2021-06-05 07:59:59,892 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:59:59,893 INFO L276 IsEmpty]: Start isEmpty. Operand 2828 states and 7718 transitions. [2021-06-05 07:59:59,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-06-05 07:59:59,894 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:59:59,894 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:00,095 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 154 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158 [2021-06-05 08:00:00,095 INFO L430 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:00,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:00,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1832735838, now seen corresponding path program 151 times [2021-06-05 08:00:00,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:00,095 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411718260] [2021-06-05 08:00:00,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:00,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:00,271 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:00,271 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:00,271 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411718260] [2021-06-05 08:00:00,271 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411718260] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:00,271 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704113234] [2021-06-05 08:00:00,271 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:00,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:00,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 08:00:00,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:00,472 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:00,472 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704113234] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:00,472 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:00,472 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2021-06-05 08:00:00,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109129450] [2021-06-05 08:00:00,472 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 08:00:00,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:00,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 08:00:00,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2021-06-05 08:00:00,473 INFO L87 Difference]: Start difference. First operand 2828 states and 7718 transitions. Second operand has 23 states, 23 states have (on average 5.217391304347826) internal successors, (120), 23 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:00,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:00,848 INFO L93 Difference]: Finished difference Result 4446 states and 11157 transitions. [2021-06-05 08:00:00,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 08:00:00,848 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.217391304347826) internal successors, (120), 23 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-06-05 08:00:00,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:00,852 INFO L225 Difference]: With dead ends: 4446 [2021-06-05 08:00:00,852 INFO L226 Difference]: Without dead ends: 4176 [2021-06-05 08:00:00,852 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 398.5ms TimeCoverageRelationStatistics Valid=519, Invalid=1551, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 08:00:00,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4176 states. [2021-06-05 08:00:00,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4176 to 2903. [2021-06-05 08:00:00,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2903 states, 2902 states have (on average 2.7370778773259823) internal successors, (7943), 2902 states have internal predecessors, (7943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:00,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2903 states to 2903 states and 7943 transitions. [2021-06-05 08:00:00,881 INFO L78 Accepts]: Start accepts. Automaton has 2903 states and 7943 transitions. Word has length 120 [2021-06-05 08:00:00,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:00,881 INFO L482 AbstractCegarLoop]: Abstraction has 2903 states and 7943 transitions. [2021-06-05 08:00:00,881 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.217391304347826) internal successors, (120), 23 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:00,881 INFO L276 IsEmpty]: Start isEmpty. Operand 2903 states and 7943 transitions. [2021-06-05 08:00:00,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-06-05 08:00:00,883 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:00,883 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:01,083 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 155 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable159 [2021-06-05 08:00:01,083 INFO L430 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:01,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:01,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1452291886, now seen corresponding path program 152 times [2021-06-05 08:00:01,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:01,084 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006601459] [2021-06-05 08:00:01,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:01,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:01,277 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:01,277 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:01,277 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006601459] [2021-06-05 08:00:01,277 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006601459] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:01,277 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985609802] [2021-06-05 08:00:01,277 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:01,337 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:00:01,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:01,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 08:00:01,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:01,505 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:01,506 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985609802] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:01,506 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:01,506 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-06-05 08:00:01,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153295883] [2021-06-05 08:00:01,506 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-05 08:00:01,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:01,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-05 08:00:01,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2021-06-05 08:00:01,506 INFO L87 Difference]: Start difference. First operand 2903 states and 7943 transitions. Second operand has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:02,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:02,000 INFO L93 Difference]: Finished difference Result 4471 states and 11282 transitions. [2021-06-05 08:00:02,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 08:00:02,000 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-06-05 08:00:02,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:02,004 INFO L225 Difference]: With dead ends: 4471 [2021-06-05 08:00:02,004 INFO L226 Difference]: Without dead ends: 4201 [2021-06-05 08:00:02,005 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 523.3ms TimeCoverageRelationStatistics Valid=590, Invalid=1860, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 08:00:02,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4201 states. [2021-06-05 08:00:02,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4201 to 2978. [2021-06-05 08:00:02,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2978 states, 2977 states have (on average 2.7437017131340276) internal successors, (8168), 2977 states have internal predecessors, (8168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:02,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2978 states to 2978 states and 8168 transitions. [2021-06-05 08:00:02,038 INFO L78 Accepts]: Start accepts. Automaton has 2978 states and 8168 transitions. Word has length 120 [2021-06-05 08:00:02,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:02,038 INFO L482 AbstractCegarLoop]: Abstraction has 2978 states and 8168 transitions. [2021-06-05 08:00:02,038 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:02,038 INFO L276 IsEmpty]: Start isEmpty. Operand 2978 states and 8168 transitions. [2021-06-05 08:00:02,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-06-05 08:00:02,040 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:02,048 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:02,261 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160,156 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:02,261 INFO L430 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:02,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:02,261 INFO L82 PathProgramCache]: Analyzing trace with hash 2076667036, now seen corresponding path program 153 times [2021-06-05 08:00:02,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:02,261 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246387334] [2021-06-05 08:00:02,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:02,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:02,496 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:02,497 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:02,497 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246387334] [2021-06-05 08:00:02,497 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246387334] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:02,497 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138693050] [2021-06-05 08:00:02,497 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:02,585 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-06-05 08:00:02,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:02,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 08:00:02,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:02,711 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:02,711 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138693050] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:02,711 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:02,711 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2021-06-05 08:00:02,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324202531] [2021-06-05 08:00:02,712 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 08:00:02,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:02,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 08:00:02,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2021-06-05 08:00:02,712 INFO L87 Difference]: Start difference. First operand 2978 states and 8168 transitions. Second operand has 23 states, 23 states have (on average 5.217391304347826) internal successors, (120), 23 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:03,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:03,114 INFO L93 Difference]: Finished difference Result 4496 states and 11407 transitions. [2021-06-05 08:00:03,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 08:00:03,114 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.217391304347826) internal successors, (120), 23 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-06-05 08:00:03,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:03,118 INFO L225 Difference]: With dead ends: 4496 [2021-06-05 08:00:03,118 INFO L226 Difference]: Without dead ends: 4226 [2021-06-05 08:00:03,119 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 441.7ms TimeCoverageRelationStatistics Valid=542, Invalid=1714, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 08:00:03,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4226 states. [2021-06-05 08:00:03,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4226 to 3053. [2021-06-05 08:00:03,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3053 states, 3052 states have (on average 2.75) internal successors, (8393), 3052 states have internal predecessors, (8393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:03,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3053 states to 3053 states and 8393 transitions. [2021-06-05 08:00:03,149 INFO L78 Accepts]: Start accepts. Automaton has 3053 states and 8393 transitions. Word has length 120 [2021-06-05 08:00:03,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:03,149 INFO L482 AbstractCegarLoop]: Abstraction has 3053 states and 8393 transitions. [2021-06-05 08:00:03,149 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.217391304347826) internal successors, (120), 23 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:03,149 INFO L276 IsEmpty]: Start isEmpty. Operand 3053 states and 8393 transitions. [2021-06-05 08:00:03,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-06-05 08:00:03,151 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:03,151 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:03,353 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161,157 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:03,354 INFO L430 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:03,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:03,354 INFO L82 PathProgramCache]: Analyzing trace with hash -1409248404, now seen corresponding path program 154 times [2021-06-05 08:00:03,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:03,354 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726150660] [2021-06-05 08:00:03,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:03,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:03,799 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:03,799 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:03,799 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726150660] [2021-06-05 08:00:03,799 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726150660] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:03,799 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908288963] [2021-06-05 08:00:03,799 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:03,865 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:00:03,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:03,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 08:00:03,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:04,040 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:04,041 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908288963] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:04,041 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:04,041 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-06-05 08:00:04,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296259146] [2021-06-05 08:00:04,041 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-05 08:00:04,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:04,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-05 08:00:04,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=463, Unknown=0, NotChecked=0, Total=552 [2021-06-05 08:00:04,054 INFO L87 Difference]: Start difference. First operand 3053 states and 8393 transitions. Second operand has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:04,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:04,739 INFO L93 Difference]: Finished difference Result 4521 states and 11532 transitions. [2021-06-05 08:00:04,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 08:00:04,740 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-06-05 08:00:04,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:04,744 INFO L225 Difference]: With dead ends: 4521 [2021-06-05 08:00:04,744 INFO L226 Difference]: Without dead ends: 4251 [2021-06-05 08:00:04,744 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 869.1ms TimeCoverageRelationStatistics Valid=621, Invalid=2031, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 08:00:04,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4251 states. [2021-06-05 08:00:04,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4251 to 3128. [2021-06-05 08:00:04,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3128 states, 3127 states have (on average 2.7559961624560283) internal successors, (8618), 3127 states have internal predecessors, (8618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:04,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3128 states to 3128 states and 8618 transitions. [2021-06-05 08:00:04,777 INFO L78 Accepts]: Start accepts. Automaton has 3128 states and 8618 transitions. Word has length 120 [2021-06-05 08:00:04,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:04,777 INFO L482 AbstractCegarLoop]: Abstraction has 3128 states and 8618 transitions. [2021-06-05 08:00:04,777 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:04,777 INFO L276 IsEmpty]: Start isEmpty. Operand 3128 states and 8618 transitions. [2021-06-05 08:00:04,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-06-05 08:00:04,779 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:04,779 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:04,980 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,158 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:04,980 INFO L430 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:04,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:04,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1493768794, now seen corresponding path program 155 times [2021-06-05 08:00:04,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:04,981 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723576384] [2021-06-05 08:00:04,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:04,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:05,569 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:05,569 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:05,569 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723576384] [2021-06-05 08:00:05,569 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723576384] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:05,569 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969321956] [2021-06-05 08:00:05,569 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:05,634 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-06-05 08:00:05,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:05,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 08:00:05,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:05,762 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:05,763 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969321956] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:05,763 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:05,763 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2021-06-05 08:00:05,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738957918] [2021-06-05 08:00:05,763 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 08:00:05,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:05,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 08:00:05,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2021-06-05 08:00:05,763 INFO L87 Difference]: Start difference. First operand 3128 states and 8618 transitions. Second operand has 23 states, 23 states have (on average 5.217391304347826) internal successors, (120), 23 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:06,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:06,260 INFO L93 Difference]: Finished difference Result 4546 states and 11657 transitions. [2021-06-05 08:00:06,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 08:00:06,260 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.217391304347826) internal successors, (120), 23 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-06-05 08:00:06,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:06,265 INFO L225 Difference]: With dead ends: 4546 [2021-06-05 08:00:06,265 INFO L226 Difference]: Without dead ends: 4276 [2021-06-05 08:00:06,265 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 831.8ms TimeCoverageRelationStatistics Valid=581, Invalid=1869, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 08:00:06,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4276 states. [2021-06-05 08:00:06,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4276 to 3203. [2021-06-05 08:00:06,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3203 states, 3202 states have (on average 2.7617114303560273) internal successors, (8843), 3202 states have internal predecessors, (8843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:06,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3203 states to 3203 states and 8843 transitions. [2021-06-05 08:00:06,300 INFO L78 Accepts]: Start accepts. Automaton has 3203 states and 8843 transitions. Word has length 120 [2021-06-05 08:00:06,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:06,300 INFO L482 AbstractCegarLoop]: Abstraction has 3203 states and 8843 transitions. [2021-06-05 08:00:06,300 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.217391304347826) internal successors, (120), 23 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:06,301 INFO L276 IsEmpty]: Start isEmpty. Operand 3203 states and 8843 transitions. [2021-06-05 08:00:06,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-06-05 08:00:06,303 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:06,303 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:06,519 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163,159 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:06,519 INFO L430 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:06,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:06,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1248691498, now seen corresponding path program 156 times [2021-06-05 08:00:06,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:06,519 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22160769] [2021-06-05 08:00:06,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:06,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:06,706 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:06,706 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:06,706 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22160769] [2021-06-05 08:00:06,706 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22160769] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:06,706 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293123982] [2021-06-05 08:00:06,706 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:06,814 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-06-05 08:00:06,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:06,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 08:00:06,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:06,955 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:06,955 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293123982] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:06,955 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:06,955 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-06-05 08:00:06,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711247810] [2021-06-05 08:00:06,955 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-05 08:00:06,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:06,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-05 08:00:06,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2021-06-05 08:00:06,955 INFO L87 Difference]: Start difference. First operand 3203 states and 8843 transitions. Second operand has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:07,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:07,539 INFO L93 Difference]: Finished difference Result 4571 states and 11782 transitions. [2021-06-05 08:00:07,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 08:00:07,539 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-06-05 08:00:07,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:07,544 INFO L225 Difference]: With dead ends: 4571 [2021-06-05 08:00:07,544 INFO L226 Difference]: Without dead ends: 4301 [2021-06-05 08:00:07,544 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 598 ImplicationChecksByTransitivity, 601.1ms TimeCoverageRelationStatistics Valid=668, Invalid=2194, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 08:00:07,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4301 states. [2021-06-05 08:00:07,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4301 to 3278. [2021-06-05 08:00:07,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3278 states, 3277 states have (on average 2.767165090021361) internal successors, (9068), 3277 states have internal predecessors, (9068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:07,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3278 states to 3278 states and 9068 transitions. [2021-06-05 08:00:07,582 INFO L78 Accepts]: Start accepts. Automaton has 3278 states and 9068 transitions. Word has length 120 [2021-06-05 08:00:07,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:07,582 INFO L482 AbstractCegarLoop]: Abstraction has 3278 states and 9068 transitions. [2021-06-05 08:00:07,582 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:07,582 INFO L276 IsEmpty]: Start isEmpty. Operand 3278 states and 9068 transitions. [2021-06-05 08:00:07,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-06-05 08:00:07,584 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:07,584 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:07,785 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164,160 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:07,785 INFO L430 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:07,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:07,785 INFO L82 PathProgramCache]: Analyzing trace with hash 871841176, now seen corresponding path program 157 times [2021-06-05 08:00:07,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:07,785 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174851688] [2021-06-05 08:00:07,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:07,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:07,944 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:07,944 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:07,944 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174851688] [2021-06-05 08:00:07,944 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174851688] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:07,945 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826736359] [2021-06-05 08:00:07,945 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:08,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:08,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 08:00:08,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:08,131 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:08,131 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826736359] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:08,131 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:08,131 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2021-06-05 08:00:08,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83494551] [2021-06-05 08:00:08,132 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 08:00:08,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:08,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 08:00:08,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=422, Unknown=0, NotChecked=0, Total=506 [2021-06-05 08:00:08,132 INFO L87 Difference]: Start difference. First operand 3278 states and 9068 transitions. Second operand has 23 states, 23 states have (on average 5.217391304347826) internal successors, (120), 23 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:08,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:08,675 INFO L93 Difference]: Finished difference Result 4596 states and 11907 transitions. [2021-06-05 08:00:08,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 08:00:08,675 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.217391304347826) internal successors, (120), 23 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-06-05 08:00:08,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:08,679 INFO L225 Difference]: With dead ends: 4596 [2021-06-05 08:00:08,679 INFO L226 Difference]: Without dead ends: 4326 [2021-06-05 08:00:08,679 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 580 ImplicationChecksByTransitivity, 479.5ms TimeCoverageRelationStatistics Valid=636, Invalid=2016, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 08:00:08,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4326 states. [2021-06-05 08:00:08,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4326 to 3353. [2021-06-05 08:00:08,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3353 states, 3352 states have (on average 2.7723747016706444) internal successors, (9293), 3352 states have internal predecessors, (9293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:08,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3353 states to 3353 states and 9293 transitions. [2021-06-05 08:00:08,718 INFO L78 Accepts]: Start accepts. Automaton has 3353 states and 9293 transitions. Word has length 120 [2021-06-05 08:00:08,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:08,718 INFO L482 AbstractCegarLoop]: Abstraction has 3353 states and 9293 transitions. [2021-06-05 08:00:08,719 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.217391304347826) internal successors, (120), 23 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:08,719 INFO L276 IsEmpty]: Start isEmpty. Operand 3353 states and 9293 transitions. [2021-06-05 08:00:08,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-06-05 08:00:08,721 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:08,721 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:08,937 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165,161 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:08,937 INFO L430 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:08,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:08,937 INFO L82 PathProgramCache]: Analyzing trace with hash -2096370584, now seen corresponding path program 158 times [2021-06-05 08:00:08,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:08,938 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231984294] [2021-06-05 08:00:08,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:08,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:09,159 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:09,159 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:09,159 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231984294] [2021-06-05 08:00:09,159 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231984294] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:09,159 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521701716] [2021-06-05 08:00:09,159 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:09,222 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:00:09,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:09,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 08:00:09,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:09,361 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:09,361 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521701716] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:09,361 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:09,361 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-06-05 08:00:09,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744561825] [2021-06-05 08:00:09,361 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-05 08:00:09,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:09,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-05 08:00:09,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2021-06-05 08:00:09,362 INFO L87 Difference]: Start difference. First operand 3353 states and 9293 transitions. Second operand has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:10,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:10,098 INFO L93 Difference]: Finished difference Result 4621 states and 12032 transitions. [2021-06-05 08:00:10,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 08:00:10,098 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-06-05 08:00:10,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:10,103 INFO L225 Difference]: With dead ends: 4621 [2021-06-05 08:00:10,103 INFO L226 Difference]: Without dead ends: 4351 [2021-06-05 08:00:10,104 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 683.9ms TimeCoverageRelationStatistics Valid=731, Invalid=2349, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 08:00:10,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4351 states. [2021-06-05 08:00:10,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4351 to 3428. [2021-06-05 08:00:10,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3428 states, 3427 states have (on average 2.7773562882988037) internal successors, (9518), 3427 states have internal predecessors, (9518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:10,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3428 states to 3428 states and 9518 transitions. [2021-06-05 08:00:10,150 INFO L78 Accepts]: Start accepts. Automaton has 3428 states and 9518 transitions. Word has length 120 [2021-06-05 08:00:10,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:10,150 INFO L482 AbstractCegarLoop]: Abstraction has 3428 states and 9518 transitions. [2021-06-05 08:00:10,150 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:10,150 INFO L276 IsEmpty]: Start isEmpty. Operand 3428 states and 9518 transitions. [2021-06-05 08:00:10,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-06-05 08:00:10,153 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:10,153 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:10,370 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166,162 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:10,370 INFO L430 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:10,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:10,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1642154410, now seen corresponding path program 159 times [2021-06-05 08:00:10,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:10,371 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989903787] [2021-06-05 08:00:10,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:10,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:10,597 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:10,598 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:10,598 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989903787] [2021-06-05 08:00:10,598 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989903787] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:10,598 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169740296] [2021-06-05 08:00:10,598 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:10,675 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-06-05 08:00:10,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:10,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 31 conjunts are in the unsatisfiable core [2021-06-05 08:00:10,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:10,815 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:10,816 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169740296] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:10,816 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:10,816 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2021-06-05 08:00:10,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098936045] [2021-06-05 08:00:10,816 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 08:00:10,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:10,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 08:00:10,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2021-06-05 08:00:10,816 INFO L87 Difference]: Start difference. First operand 3428 states and 9518 transitions. Second operand has 23 states, 23 states have (on average 5.217391304347826) internal successors, (120), 23 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:11,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:11,497 INFO L93 Difference]: Finished difference Result 4646 states and 12157 transitions. [2021-06-05 08:00:11,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 08:00:11,497 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.217391304347826) internal successors, (120), 23 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-06-05 08:00:11,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:11,502 INFO L225 Difference]: With dead ends: 4646 [2021-06-05 08:00:11,502 INFO L226 Difference]: Without dead ends: 4376 [2021-06-05 08:00:11,503 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 654 ImplicationChecksByTransitivity, 681.2ms TimeCoverageRelationStatistics Valid=707, Invalid=2155, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 08:00:11,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4376 states. [2021-06-05 08:00:11,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4376 to 3503. [2021-06-05 08:00:11,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3503 states, 3502 states have (on average 2.7821245002855512) internal successors, (9743), 3502 states have internal predecessors, (9743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:11,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3503 states to 3503 states and 9743 transitions. [2021-06-05 08:00:11,548 INFO L78 Accepts]: Start accepts. Automaton has 3503 states and 9743 transitions. Word has length 120 [2021-06-05 08:00:11,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:11,548 INFO L482 AbstractCegarLoop]: Abstraction has 3503 states and 9743 transitions. [2021-06-05 08:00:11,548 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.217391304347826) internal successors, (120), 23 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:11,548 INFO L276 IsEmpty]: Start isEmpty. Operand 3503 states and 9743 transitions. [2021-06-05 08:00:11,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-06-05 08:00:11,551 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:11,551 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:11,769 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 163 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable167 [2021-06-05 08:00:11,769 INFO L430 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:11,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:11,769 INFO L82 PathProgramCache]: Analyzing trace with hash -643258074, now seen corresponding path program 160 times [2021-06-05 08:00:11,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:11,769 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587828613] [2021-06-05 08:00:11,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:11,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:11,988 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:11,989 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:11,989 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587828613] [2021-06-05 08:00:11,989 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587828613] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:11,989 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475339764] [2021-06-05 08:00:11,989 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:12,076 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:00:12,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:12,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 08:00:12,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:12,269 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:12,269 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475339764] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:12,269 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:12,269 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-06-05 08:00:12,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605426421] [2021-06-05 08:00:12,269 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-05 08:00:12,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:12,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-05 08:00:12,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=466, Unknown=0, NotChecked=0, Total=552 [2021-06-05 08:00:12,270 INFO L87 Difference]: Start difference. First operand 3503 states and 9743 transitions. Second operand has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:13,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:13,123 INFO L93 Difference]: Finished difference Result 4671 states and 12282 transitions. [2021-06-05 08:00:13,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 08:00:13,124 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-06-05 08:00:13,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:13,128 INFO L225 Difference]: With dead ends: 4671 [2021-06-05 08:00:13,128 INFO L226 Difference]: Without dead ends: 4401 [2021-06-05 08:00:13,128 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 756 ImplicationChecksByTransitivity, 820.2ms TimeCoverageRelationStatistics Valid=810, Invalid=2496, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 08:00:13,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4401 states. [2021-06-05 08:00:13,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4401 to 3578. [2021-06-05 08:00:13,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3578 states, 3577 states have (on average 2.786692759295499) internal successors, (9968), 3577 states have internal predecessors, (9968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:13,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3578 states to 3578 states and 9968 transitions. [2021-06-05 08:00:13,169 INFO L78 Accepts]: Start accepts. Automaton has 3578 states and 9968 transitions. Word has length 120 [2021-06-05 08:00:13,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:13,169 INFO L482 AbstractCegarLoop]: Abstraction has 3578 states and 9968 transitions. [2021-06-05 08:00:13,169 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:13,169 INFO L276 IsEmpty]: Start isEmpty. Operand 3578 states and 9968 transitions. [2021-06-05 08:00:13,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-06-05 08:00:13,172 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:13,172 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:13,389 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 164 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable168 [2021-06-05 08:00:13,389 INFO L430 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:13,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:13,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1772381332, now seen corresponding path program 161 times [2021-06-05 08:00:13,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:13,389 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455782841] [2021-06-05 08:00:13,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:13,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:13,600 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:13,600 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:13,600 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455782841] [2021-06-05 08:00:13,600 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455782841] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:13,600 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139239023] [2021-06-05 08:00:13,600 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:13,667 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-06-05 08:00:13,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:13,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 08:00:13,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:13,796 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:13,796 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139239023] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:13,796 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:13,796 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2021-06-05 08:00:13,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799354617] [2021-06-05 08:00:13,796 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 08:00:13,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:13,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 08:00:13,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2021-06-05 08:00:13,797 INFO L87 Difference]: Start difference. First operand 3578 states and 9968 transitions. Second operand has 23 states, 23 states have (on average 5.217391304347826) internal successors, (120), 23 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:14,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:14,399 INFO L93 Difference]: Finished difference Result 4696 states and 12407 transitions. [2021-06-05 08:00:14,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 08:00:14,399 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.217391304347826) internal successors, (120), 23 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-06-05 08:00:14,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:14,404 INFO L225 Difference]: With dead ends: 4696 [2021-06-05 08:00:14,404 INFO L226 Difference]: Without dead ends: 4426 [2021-06-05 08:00:14,404 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 732 ImplicationChecksByTransitivity, 557.3ms TimeCoverageRelationStatistics Valid=794, Invalid=2286, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 08:00:14,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4426 states. [2021-06-05 08:00:14,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4426 to 3653. [2021-06-05 08:00:14,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3653 states, 3652 states have (on average 2.7910733844468782) internal successors, (10193), 3652 states have internal predecessors, (10193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:14,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3653 states to 3653 states and 10193 transitions. [2021-06-05 08:00:14,452 INFO L78 Accepts]: Start accepts. Automaton has 3653 states and 10193 transitions. Word has length 120 [2021-06-05 08:00:14,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:14,453 INFO L482 AbstractCegarLoop]: Abstraction has 3653 states and 10193 transitions. [2021-06-05 08:00:14,453 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.217391304347826) internal successors, (120), 23 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:14,453 INFO L276 IsEmpty]: Start isEmpty. Operand 3653 states and 10193 transitions. [2021-06-05 08:00:14,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-06-05 08:00:14,455 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:14,456 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:14,672 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 165 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable169 [2021-06-05 08:00:14,672 INFO L430 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:14,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:14,673 INFO L82 PathProgramCache]: Analyzing trace with hash -492266652, now seen corresponding path program 162 times [2021-06-05 08:00:14,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:14,673 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810340612] [2021-06-05 08:00:14,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:14,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:14,857 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:14,857 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:14,857 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810340612] [2021-06-05 08:00:14,857 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810340612] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:14,857 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315749504] [2021-06-05 08:00:14,857 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:14,928 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-06-05 08:00:14,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:14,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 08:00:14,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:15,061 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:15,062 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315749504] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:15,062 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:15,062 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-06-05 08:00:15,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927843482] [2021-06-05 08:00:15,062 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-05 08:00:15,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:15,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-05 08:00:15,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2021-06-05 08:00:15,062 INFO L87 Difference]: Start difference. First operand 3653 states and 10193 transitions. Second operand has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:15,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:15,828 INFO L93 Difference]: Finished difference Result 4721 states and 12532 transitions. [2021-06-05 08:00:15,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 08:00:15,828 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-06-05 08:00:15,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:15,833 INFO L225 Difference]: With dead ends: 4721 [2021-06-05 08:00:15,833 INFO L226 Difference]: Without dead ends: 4451 [2021-06-05 08:00:15,834 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 751 ImplicationChecksByTransitivity, 676.7ms TimeCoverageRelationStatistics Valid=773, Invalid=2533, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 08:00:15,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4451 states. [2021-06-05 08:00:15,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4451 to 3728. [2021-06-05 08:00:15,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3728 states, 3727 states have (on average 2.795277703246579) internal successors, (10418), 3727 states have internal predecessors, (10418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:15,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3728 states to 3728 states and 10418 transitions. [2021-06-05 08:00:15,887 INFO L78 Accepts]: Start accepts. Automaton has 3728 states and 10418 transitions. Word has length 120 [2021-06-05 08:00:15,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:15,887 INFO L482 AbstractCegarLoop]: Abstraction has 3728 states and 10418 transitions. [2021-06-05 08:00:15,888 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:15,888 INFO L276 IsEmpty]: Start isEmpty. Operand 3728 states and 10418 transitions. [2021-06-05 08:00:15,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-06-05 08:00:15,891 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:15,892 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:16,092 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170,166 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:16,092 INFO L430 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:16,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:16,092 INFO L82 PathProgramCache]: Analyzing trace with hash 121972818, now seen corresponding path program 163 times [2021-06-05 08:00:16,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:16,092 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659109280] [2021-06-05 08:00:16,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:16,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:16,292 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:16,293 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:16,293 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659109280] [2021-06-05 08:00:16,293 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659109280] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:16,293 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416669828] [2021-06-05 08:00:16,293 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:16,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:16,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 08:00:16,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:16,493 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:16,494 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416669828] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:16,494 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:16,494 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2021-06-05 08:00:16,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879267973] [2021-06-05 08:00:16,494 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 08:00:16,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:16,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 08:00:16,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2021-06-05 08:00:16,494 INFO L87 Difference]: Start difference. First operand 3728 states and 10418 transitions. Second operand has 23 states, 23 states have (on average 5.217391304347826) internal successors, (120), 23 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:17,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:17,155 INFO L93 Difference]: Finished difference Result 4791 states and 12777 transitions. [2021-06-05 08:00:17,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 08:00:17,156 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.217391304347826) internal successors, (120), 23 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-06-05 08:00:17,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:17,161 INFO L225 Difference]: With dead ends: 4791 [2021-06-05 08:00:17,161 INFO L226 Difference]: Without dead ends: 4521 [2021-06-05 08:00:17,162 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 814 ImplicationChecksByTransitivity, 657.4ms TimeCoverageRelationStatistics Valid=897, Invalid=2409, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 08:00:17,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4521 states. [2021-06-05 08:00:17,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4521 to 3803. [2021-06-05 08:00:17,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3803 states, 3802 states have (on average 2.8032614413466597) internal successors, (10658), 3802 states have internal predecessors, (10658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:17,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3803 states to 3803 states and 10658 transitions. [2021-06-05 08:00:17,213 INFO L78 Accepts]: Start accepts. Automaton has 3803 states and 10658 transitions. Word has length 120 [2021-06-05 08:00:17,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:17,213 INFO L482 AbstractCegarLoop]: Abstraction has 3803 states and 10658 transitions. [2021-06-05 08:00:17,213 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.217391304347826) internal successors, (120), 23 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:17,213 INFO L276 IsEmpty]: Start isEmpty. Operand 3803 states and 10658 transitions. [2021-06-05 08:00:17,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-06-05 08:00:17,217 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:17,217 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:17,434 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 167 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable171 [2021-06-05 08:00:17,434 INFO L430 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:17,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:17,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1593269470, now seen corresponding path program 164 times [2021-06-05 08:00:17,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:17,434 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926575953] [2021-06-05 08:00:17,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:17,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:17,594 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:17,594 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:17,594 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926575953] [2021-06-05 08:00:17,594 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926575953] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:17,594 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795297573] [2021-06-05 08:00:17,594 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:17,660 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:00:17,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:17,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 08:00:17,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:17,834 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:17,834 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795297573] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:17,834 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:17,834 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-06-05 08:00:17,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527384975] [2021-06-05 08:00:17,835 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-05 08:00:17,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:17,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-05 08:00:17,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2021-06-05 08:00:17,852 INFO L87 Difference]: Start difference. First operand 3803 states and 10658 transitions. Second operand has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:18,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:18,702 INFO L93 Difference]: Finished difference Result 5369 states and 14403 transitions. [2021-06-05 08:00:18,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 08:00:18,702 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-06-05 08:00:18,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:18,708 INFO L225 Difference]: With dead ends: 5369 [2021-06-05 08:00:18,708 INFO L226 Difference]: Without dead ends: 4746 [2021-06-05 08:00:18,708 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1005 ImplicationChecksByTransitivity, 770.9ms TimeCoverageRelationStatistics Valid=1037, Invalid=2995, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 08:00:18,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4746 states. [2021-06-05 08:00:18,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4746 to 3878. [2021-06-05 08:00:18,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3878 states, 3877 states have (on average 2.8083569770441064) internal successors, (10888), 3877 states have internal predecessors, (10888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:18,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 10888 transitions. [2021-06-05 08:00:18,756 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 10888 transitions. Word has length 120 [2021-06-05 08:00:18,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:18,757 INFO L482 AbstractCegarLoop]: Abstraction has 3878 states and 10888 transitions. [2021-06-05 08:00:18,757 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:18,757 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 10888 transitions. [2021-06-05 08:00:18,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-06-05 08:00:18,760 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:18,760 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:18,977 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172,168 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:18,978 INFO L430 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:18,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:18,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1669050224, now seen corresponding path program 165 times [2021-06-05 08:00:18,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:18,978 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85383624] [2021-06-05 08:00:18,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:18,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:19,140 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:19,141 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:19,141 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85383624] [2021-06-05 08:00:19,141 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85383624] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:19,141 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974634097] [2021-06-05 08:00:19,141 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:19,211 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-06-05 08:00:19,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:19,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 08:00:19,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:19,334 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:19,334 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974634097] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:19,334 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:19,334 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2021-06-05 08:00:19,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092492072] [2021-06-05 08:00:19,335 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 08:00:19,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:19,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 08:00:19,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2021-06-05 08:00:19,335 INFO L87 Difference]: Start difference. First operand 3878 states and 10888 transitions. Second operand has 23 states, 23 states have (on average 5.217391304347826) internal successors, (120), 23 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:20,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:20,108 INFO L93 Difference]: Finished difference Result 5598 states and 15121 transitions. [2021-06-05 08:00:20,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 08:00:20,108 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.217391304347826) internal successors, (120), 23 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-06-05 08:00:20,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:20,113 INFO L225 Difference]: With dead ends: 5598 [2021-06-05 08:00:20,114 INFO L226 Difference]: Without dead ends: 5328 [2021-06-05 08:00:20,114 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 899 ImplicationChecksByTransitivity, 682.6ms TimeCoverageRelationStatistics Valid=1017, Invalid=2523, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 08:00:20,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5328 states. [2021-06-05 08:00:20,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5328 to 4058. [2021-06-05 08:00:20,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4058 states, 4057 states have (on average 2.82154301207789) internal successors, (11447), 4057 states have internal predecessors, (11447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:20,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4058 states to 4058 states and 11447 transitions. [2021-06-05 08:00:20,182 INFO L78 Accepts]: Start accepts. Automaton has 4058 states and 11447 transitions. Word has length 120 [2021-06-05 08:00:20,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:20,183 INFO L482 AbstractCegarLoop]: Abstraction has 4058 states and 11447 transitions. [2021-06-05 08:00:20,183 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.217391304347826) internal successors, (120), 23 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:20,183 INFO L276 IsEmpty]: Start isEmpty. Operand 4058 states and 11447 transitions. [2021-06-05 08:00:20,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-06-05 08:00:20,187 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:20,187 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:20,401 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173,169 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:20,401 INFO L430 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:20,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:20,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1691393474, now seen corresponding path program 166 times [2021-06-05 08:00:20,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:20,401 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338228440] [2021-06-05 08:00:20,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:20,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:20,666 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:20,666 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:20,666 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338228440] [2021-06-05 08:00:20,666 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338228440] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:20,666 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821721121] [2021-06-05 08:00:20,666 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:20,857 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:00:20,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:20,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 08:00:20,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:21,046 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:21,046 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821721121] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:21,046 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:21,046 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-06-05 08:00:21,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197908968] [2021-06-05 08:00:21,047 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-05 08:00:21,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:21,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-05 08:00:21,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2021-06-05 08:00:21,047 INFO L87 Difference]: Start difference. First operand 4058 states and 11447 transitions. Second operand has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:21,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:21,917 INFO L93 Difference]: Finished difference Result 5085 states and 13821 transitions. [2021-06-05 08:00:21,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 08:00:21,917 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-06-05 08:00:21,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:21,923 INFO L225 Difference]: With dead ends: 5085 [2021-06-05 08:00:21,923 INFO L226 Difference]: Without dead ends: 4506 [2021-06-05 08:00:21,924 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1023 ImplicationChecksByTransitivity, 831.2ms TimeCoverageRelationStatistics Valid=1146, Invalid=2886, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 08:00:21,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4506 states. [2021-06-05 08:00:21,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4506 to 2713. [2021-06-05 08:00:21,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2713 states, 2712 states have (on average 2.7389380530973453) internal successors, (7428), 2712 states have internal predecessors, (7428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:21,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2713 states to 2713 states and 7428 transitions. [2021-06-05 08:00:21,957 INFO L78 Accepts]: Start accepts. Automaton has 2713 states and 7428 transitions. Word has length 120 [2021-06-05 08:00:21,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:21,957 INFO L482 AbstractCegarLoop]: Abstraction has 2713 states and 7428 transitions. [2021-06-05 08:00:21,957 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:21,957 INFO L276 IsEmpty]: Start isEmpty. Operand 2713 states and 7428 transitions. [2021-06-05 08:00:21,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-06-05 08:00:21,959 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:21,959 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:22,175 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174,170 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:22,176 INFO L430 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:22,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:22,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1352458403, now seen corresponding path program 167 times [2021-06-05 08:00:22,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:22,176 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241702958] [2021-06-05 08:00:22,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:22,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:22,425 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:22,425 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:22,425 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241702958] [2021-06-05 08:00:22,425 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241702958] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:22,425 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711085508] [2021-06-05 08:00:22,425 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 171 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 171 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:22,524 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-06-05 08:00:22,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:22,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 08:00:22,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:22,678 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:22,678 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711085508] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:22,678 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:22,678 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2021-06-05 08:00:22,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075877095] [2021-06-05 08:00:22,678 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-05 08:00:22,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:22,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-05 08:00:22,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2021-06-05 08:00:22,679 INFO L87 Difference]: Start difference. First operand 2713 states and 7428 transitions. Second operand has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:23,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:23,293 INFO L93 Difference]: Finished difference Result 4031 states and 10267 transitions. [2021-06-05 08:00:23,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 08:00:23,293 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-06-05 08:00:23,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:23,296 INFO L225 Difference]: With dead ends: 4031 [2021-06-05 08:00:23,297 INFO L226 Difference]: Without dead ends: 3761 [2021-06-05 08:00:23,297 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 649.6ms TimeCoverageRelationStatistics Valid=578, Invalid=1678, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 08:00:23,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3761 states. [2021-06-05 08:00:23,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3761 to 2788. [2021-06-05 08:00:23,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2788 states, 2787 states have (on average 2.7459634015069967) internal successors, (7653), 2787 states have internal predecessors, (7653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:23,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2788 states to 2788 states and 7653 transitions. [2021-06-05 08:00:23,326 INFO L78 Accepts]: Start accepts. Automaton has 2788 states and 7653 transitions. Word has length 125 [2021-06-05 08:00:23,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:23,326 INFO L482 AbstractCegarLoop]: Abstraction has 2788 states and 7653 transitions. [2021-06-05 08:00:23,327 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:23,327 INFO L276 IsEmpty]: Start isEmpty. Operand 2788 states and 7653 transitions. [2021-06-05 08:00:23,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-06-05 08:00:23,329 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:23,329 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:23,548 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 171 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable175 [2021-06-05 08:00:23,548 INFO L430 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:23,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:23,549 INFO L82 PathProgramCache]: Analyzing trace with hash 2043985453, now seen corresponding path program 168 times [2021-06-05 08:00:23,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:23,549 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688871125] [2021-06-05 08:00:23,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:23,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:23,765 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:23,765 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:23,765 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688871125] [2021-06-05 08:00:23,765 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688871125] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:23,765 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105857306] [2021-06-05 08:00:23,765 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 172 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 172 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:23,860 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-06-05 08:00:23,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:23,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 08:00:23,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:24,017 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:24,017 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105857306] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:24,017 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:24,017 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-06-05 08:00:24,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530020560] [2021-06-05 08:00:24,017 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 08:00:24,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:24,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 08:00:24,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=486, Unknown=0, NotChecked=0, Total=600 [2021-06-05 08:00:24,018 INFO L87 Difference]: Start difference. First operand 2788 states and 7653 transitions. Second operand has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:24,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:24,450 INFO L93 Difference]: Finished difference Result 4501 states and 11282 transitions. [2021-06-05 08:00:24,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 08:00:24,451 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-06-05 08:00:24,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:24,455 INFO L225 Difference]: With dead ends: 4501 [2021-06-05 08:00:24,456 INFO L226 Difference]: Without dead ends: 4231 [2021-06-05 08:00:24,456 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 496.5ms TimeCoverageRelationStatistics Valid=631, Invalid=1919, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 08:00:24,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4231 states. [2021-06-05 08:00:24,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4231 to 2863. [2021-06-05 08:00:24,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2863 states, 2862 states have (on average 2.752620545073375) internal successors, (7878), 2862 states have internal predecessors, (7878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:24,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2863 states to 2863 states and 7878 transitions. [2021-06-05 08:00:24,493 INFO L78 Accepts]: Start accepts. Automaton has 2863 states and 7878 transitions. Word has length 125 [2021-06-05 08:00:24,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:24,493 INFO L482 AbstractCegarLoop]: Abstraction has 2863 states and 7878 transitions. [2021-06-05 08:00:24,493 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:24,494 INFO L276 IsEmpty]: Start isEmpty. Operand 2863 states and 7878 transitions. [2021-06-05 08:00:24,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-06-05 08:00:24,496 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:24,496 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:24,709 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176,172 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:24,709 INFO L430 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:24,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:24,709 INFO L82 PathProgramCache]: Analyzing trace with hash 429031963, now seen corresponding path program 169 times [2021-06-05 08:00:24,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:24,709 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289423846] [2021-06-05 08:00:24,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:24,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:24,916 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:24,917 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:24,917 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289423846] [2021-06-05 08:00:24,917 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289423846] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:24,917 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764338218] [2021-06-05 08:00:24,917 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 173 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 173 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:24,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:24,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 08:00:24,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:25,117 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:25,117 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764338218] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:25,117 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:25,117 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2021-06-05 08:00:25,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605485046] [2021-06-05 08:00:25,117 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-05 08:00:25,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:25,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-05 08:00:25,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2021-06-05 08:00:25,118 INFO L87 Difference]: Start difference. First operand 2863 states and 7878 transitions. Second operand has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:25,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:25,531 INFO L93 Difference]: Finished difference Result 4531 states and 11417 transitions. [2021-06-05 08:00:25,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 08:00:25,531 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-06-05 08:00:25,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:25,536 INFO L225 Difference]: With dead ends: 4531 [2021-06-05 08:00:25,536 INFO L226 Difference]: Without dead ends: 4261 [2021-06-05 08:00:25,536 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 451.0ms TimeCoverageRelationStatistics Valid=631, Invalid=1919, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 08:00:25,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4261 states. [2021-06-05 08:00:25,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4261 to 2938. [2021-06-05 08:00:25,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2938 states, 2937 states have (on average 2.758937691521961) internal successors, (8103), 2937 states have internal predecessors, (8103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:25,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2938 states to 2938 states and 8103 transitions. [2021-06-05 08:00:25,568 INFO L78 Accepts]: Start accepts. Automaton has 2938 states and 8103 transitions. Word has length 125 [2021-06-05 08:00:25,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:25,568 INFO L482 AbstractCegarLoop]: Abstraction has 2938 states and 8103 transitions. [2021-06-05 08:00:25,568 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:25,568 INFO L276 IsEmpty]: Start isEmpty. Operand 2938 states and 8103 transitions. [2021-06-05 08:00:25,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-06-05 08:00:25,570 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:25,570 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:25,771 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 173 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable177 [2021-06-05 08:00:25,771 INFO L430 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:25,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:25,771 INFO L82 PathProgramCache]: Analyzing trace with hash 48588011, now seen corresponding path program 170 times [2021-06-05 08:00:25,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:25,771 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695288143] [2021-06-05 08:00:25,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:25,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:26,088 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:26,089 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:26,089 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695288143] [2021-06-05 08:00:26,089 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695288143] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:26,089 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668018631] [2021-06-05 08:00:26,089 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 174 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 174 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:26,155 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:00:26,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:26,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 08:00:26,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:26,306 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:26,306 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668018631] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:26,306 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:26,307 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-06-05 08:00:26,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111270729] [2021-06-05 08:00:26,307 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 08:00:26,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:26,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 08:00:26,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2021-06-05 08:00:26,307 INFO L87 Difference]: Start difference. First operand 2938 states and 8103 transitions. Second operand has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:26,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:26,803 INFO L93 Difference]: Finished difference Result 4556 states and 11542 transitions. [2021-06-05 08:00:26,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 08:00:26,803 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-06-05 08:00:26,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:26,807 INFO L225 Difference]: With dead ends: 4556 [2021-06-05 08:00:26,807 INFO L226 Difference]: Without dead ends: 4286 [2021-06-05 08:00:26,808 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 642.8ms TimeCoverageRelationStatistics Valid=653, Invalid=2103, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 08:00:26,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4286 states. [2021-06-05 08:00:26,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4286 to 3013. [2021-06-05 08:00:26,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3013 states, 3012 states have (on average 2.764940239043825) internal successors, (8328), 3012 states have internal predecessors, (8328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:26,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3013 states to 3013 states and 8328 transitions. [2021-06-05 08:00:26,843 INFO L78 Accepts]: Start accepts. Automaton has 3013 states and 8328 transitions. Word has length 125 [2021-06-05 08:00:26,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:26,843 INFO L482 AbstractCegarLoop]: Abstraction has 3013 states and 8328 transitions. [2021-06-05 08:00:26,843 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:26,843 INFO L276 IsEmpty]: Start isEmpty. Operand 3013 states and 8328 transitions. [2021-06-05 08:00:26,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-06-05 08:00:26,845 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:26,845 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:27,061 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 174 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable178 [2021-06-05 08:00:27,061 INFO L430 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:27,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:27,061 INFO L82 PathProgramCache]: Analyzing trace with hash 672963161, now seen corresponding path program 171 times [2021-06-05 08:00:27,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:27,061 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536312058] [2021-06-05 08:00:27,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:27,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:27,260 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:27,261 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:27,261 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536312058] [2021-06-05 08:00:27,261 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536312058] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:27,261 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468661047] [2021-06-05 08:00:27,261 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 175 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 175 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:27,349 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-06-05 08:00:27,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:27,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 08:00:27,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:27,482 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:27,482 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468661047] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:27,482 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:27,482 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2021-06-05 08:00:27,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151521073] [2021-06-05 08:00:27,483 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-05 08:00:27,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:27,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-05 08:00:27,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2021-06-05 08:00:27,483 INFO L87 Difference]: Start difference. First operand 3013 states and 8328 transitions. Second operand has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:27,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:27,942 INFO L93 Difference]: Finished difference Result 4581 states and 11667 transitions. [2021-06-05 08:00:27,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 08:00:27,942 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-06-05 08:00:27,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:27,947 INFO L225 Difference]: With dead ends: 4581 [2021-06-05 08:00:27,947 INFO L226 Difference]: Without dead ends: 4311 [2021-06-05 08:00:27,948 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 609 ImplicationChecksByTransitivity, 477.4ms TimeCoverageRelationStatistics Valid=667, Invalid=2089, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 08:00:27,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4311 states. [2021-06-05 08:00:27,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4311 to 3088. [2021-06-05 08:00:27,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3088 states, 3087 states have (on average 2.770651117589893) internal successors, (8553), 3087 states have internal predecessors, (8553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:27,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3088 states to 3088 states and 8553 transitions. [2021-06-05 08:00:27,982 INFO L78 Accepts]: Start accepts. Automaton has 3088 states and 8553 transitions. Word has length 125 [2021-06-05 08:00:27,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:27,982 INFO L482 AbstractCegarLoop]: Abstraction has 3088 states and 8553 transitions. [2021-06-05 08:00:27,982 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:27,982 INFO L276 IsEmpty]: Start isEmpty. Operand 3088 states and 8553 transitions. [2021-06-05 08:00:27,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-06-05 08:00:27,985 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:27,985 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:28,185 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 175 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable179 [2021-06-05 08:00:28,185 INFO L430 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:28,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:28,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1482015017, now seen corresponding path program 172 times [2021-06-05 08:00:28,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:28,186 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575211145] [2021-06-05 08:00:28,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:28,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:28,621 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:28,621 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:28,621 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575211145] [2021-06-05 08:00:28,621 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575211145] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:28,621 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100599770] [2021-06-05 08:00:28,621 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 176 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 176 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:28,688 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:00:28,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:28,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 08:00:28,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:28,864 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:28,864 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100599770] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:28,864 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:28,864 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-06-05 08:00:28,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201333266] [2021-06-05 08:00:28,864 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 08:00:28,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:28,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 08:00:28,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=506, Unknown=0, NotChecked=0, Total=600 [2021-06-05 08:00:28,865 INFO L87 Difference]: Start difference. First operand 3088 states and 8553 transitions. Second operand has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:29,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:29,534 INFO L93 Difference]: Finished difference Result 4606 states and 11792 transitions. [2021-06-05 08:00:29,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 08:00:29,535 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-06-05 08:00:29,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:29,539 INFO L225 Difference]: With dead ends: 4606 [2021-06-05 08:00:29,540 INFO L226 Difference]: Without dead ends: 4336 [2021-06-05 08:00:29,540 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 822.1ms TimeCoverageRelationStatistics Valid=691, Invalid=2279, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 08:00:29,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4336 states. [2021-06-05 08:00:29,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4336 to 3163. [2021-06-05 08:00:29,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3163 states, 3162 states have (on average 2.7760910815939277) internal successors, (8778), 3162 states have internal predecessors, (8778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:29,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3163 states to 3163 states and 8778 transitions. [2021-06-05 08:00:29,591 INFO L78 Accepts]: Start accepts. Automaton has 3163 states and 8778 transitions. Word has length 125 [2021-06-05 08:00:29,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:29,591 INFO L482 AbstractCegarLoop]: Abstraction has 3163 states and 8778 transitions. [2021-06-05 08:00:29,591 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:29,591 INFO L276 IsEmpty]: Start isEmpty. Operand 3163 states and 8778 transitions. [2021-06-05 08:00:29,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-06-05 08:00:29,594 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:29,594 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:29,798 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 176 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable180 [2021-06-05 08:00:29,799 INFO L430 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:29,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:29,799 INFO L82 PathProgramCache]: Analyzing trace with hash 90064919, now seen corresponding path program 173 times [2021-06-05 08:00:29,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:29,799 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141797171] [2021-06-05 08:00:29,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:29,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:30,069 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:30,069 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:30,070 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141797171] [2021-06-05 08:00:30,070 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141797171] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:30,070 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822971335] [2021-06-05 08:00:30,070 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 177 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 177 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:30,149 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-06-05 08:00:30,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:30,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 08:00:30,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:30,285 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:30,285 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822971335] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:30,285 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:30,285 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2021-06-05 08:00:30,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375247538] [2021-06-05 08:00:30,285 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-05 08:00:30,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:30,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-05 08:00:30,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2021-06-05 08:00:30,286 INFO L87 Difference]: Start difference. First operand 3163 states and 8778 transitions. Second operand has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:30,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:30,779 INFO L93 Difference]: Finished difference Result 4631 states and 11917 transitions. [2021-06-05 08:00:30,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 08:00:30,779 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-06-05 08:00:30,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:30,784 INFO L225 Difference]: With dead ends: 4631 [2021-06-05 08:00:30,784 INFO L226 Difference]: Without dead ends: 4361 [2021-06-05 08:00:30,784 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 692 ImplicationChecksByTransitivity, 553.6ms TimeCoverageRelationStatistics Valid=719, Invalid=2251, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 08:00:30,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4361 states. [2021-06-05 08:00:30,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4361 to 3238. [2021-06-05 08:00:30,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3238 states, 3237 states have (on average 2.7812789620018536) internal successors, (9003), 3237 states have internal predecessors, (9003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:30,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3238 states to 3238 states and 9003 transitions. [2021-06-05 08:00:30,822 INFO L78 Accepts]: Start accepts. Automaton has 3238 states and 9003 transitions. Word has length 125 [2021-06-05 08:00:30,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:30,822 INFO L482 AbstractCegarLoop]: Abstraction has 3238 states and 9003 transitions. [2021-06-05 08:00:30,822 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:30,822 INFO L276 IsEmpty]: Start isEmpty. Operand 3238 states and 9003 transitions. [2021-06-05 08:00:30,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-06-05 08:00:30,824 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:30,824 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:31,025 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181,177 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:31,025 INFO L430 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:31,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:31,025 INFO L82 PathProgramCache]: Analyzing trace with hash -155012377, now seen corresponding path program 174 times [2021-06-05 08:00:31,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:31,025 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114676340] [2021-06-05 08:00:31,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:31,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:31,241 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:31,241 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:31,241 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114676340] [2021-06-05 08:00:31,241 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114676340] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:31,241 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246581396] [2021-06-05 08:00:31,241 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 178 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 178 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:31,327 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-06-05 08:00:31,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:31,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 08:00:31,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:31,488 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:31,488 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246581396] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:31,489 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:31,489 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-06-05 08:00:31,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17079046] [2021-06-05 08:00:31,489 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 08:00:31,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:31,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 08:00:31,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2021-06-05 08:00:31,489 INFO L87 Difference]: Start difference. First operand 3238 states and 9003 transitions. Second operand has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:32,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:32,116 INFO L93 Difference]: Finished difference Result 4656 states and 12042 transitions. [2021-06-05 08:00:32,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 08:00:32,116 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-06-05 08:00:32,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:32,120 INFO L225 Difference]: With dead ends: 4656 [2021-06-05 08:00:32,120 INFO L226 Difference]: Without dead ends: 4386 [2021-06-05 08:00:32,121 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 715 ImplicationChecksByTransitivity, 627.1ms TimeCoverageRelationStatistics Valid=745, Invalid=2447, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 08:00:32,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4386 states. [2021-06-05 08:00:32,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4386 to 3313. [2021-06-05 08:00:32,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3313 states, 3312 states have (on average 2.786231884057971) internal successors, (9228), 3312 states have internal predecessors, (9228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:32,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3313 states to 3313 states and 9228 transitions. [2021-06-05 08:00:32,154 INFO L78 Accepts]: Start accepts. Automaton has 3313 states and 9228 transitions. Word has length 125 [2021-06-05 08:00:32,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:32,154 INFO L482 AbstractCegarLoop]: Abstraction has 3313 states and 9228 transitions. [2021-06-05 08:00:32,154 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:32,154 INFO L276 IsEmpty]: Start isEmpty. Operand 3313 states and 9228 transitions. [2021-06-05 08:00:32,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-06-05 08:00:32,157 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:32,157 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:32,357 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 178 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable182 [2021-06-05 08:00:32,357 INFO L430 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:32,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:32,357 INFO L82 PathProgramCache]: Analyzing trace with hash -531862699, now seen corresponding path program 175 times [2021-06-05 08:00:32,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:32,358 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120604432] [2021-06-05 08:00:32,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:32,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:32,620 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:32,620 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:32,620 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120604432] [2021-06-05 08:00:32,620 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120604432] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:32,620 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173355123] [2021-06-05 08:00:32,620 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 179 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 179 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:32,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:32,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 08:00:32,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:32,836 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:32,836 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173355123] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:32,836 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:32,836 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2021-06-05 08:00:32,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192203302] [2021-06-05 08:00:32,836 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-05 08:00:32,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:32,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-05 08:00:32,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2021-06-05 08:00:32,837 INFO L87 Difference]: Start difference. First operand 3313 states and 9228 transitions. Second operand has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:33,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:33,387 INFO L93 Difference]: Finished difference Result 4681 states and 12167 transitions. [2021-06-05 08:00:33,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 08:00:33,387 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-06-05 08:00:33,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:33,392 INFO L225 Difference]: With dead ends: 4681 [2021-06-05 08:00:33,392 INFO L226 Difference]: Without dead ends: 4411 [2021-06-05 08:00:33,392 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 779 ImplicationChecksByTransitivity, 597.9ms TimeCoverageRelationStatistics Valid=787, Invalid=2405, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 08:00:33,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4411 states. [2021-06-05 08:00:33,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4411 to 3388. [2021-06-05 08:00:33,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3388 states, 3387 states have (on average 2.7909654561558903) internal successors, (9453), 3387 states have internal predecessors, (9453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:33,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3388 states to 3388 states and 9453 transitions. [2021-06-05 08:00:33,432 INFO L78 Accepts]: Start accepts. Automaton has 3388 states and 9453 transitions. Word has length 125 [2021-06-05 08:00:33,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:33,432 INFO L482 AbstractCegarLoop]: Abstraction has 3388 states and 9453 transitions. [2021-06-05 08:00:33,433 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:33,433 INFO L276 IsEmpty]: Start isEmpty. Operand 3388 states and 9453 transitions. [2021-06-05 08:00:33,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-06-05 08:00:33,435 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:33,435 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:33,641 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183,179 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:33,641 INFO L430 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:33,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:33,641 INFO L82 PathProgramCache]: Analyzing trace with hash 794892837, now seen corresponding path program 176 times [2021-06-05 08:00:33,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:33,641 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465356016] [2021-06-05 08:00:33,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:33,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:33,860 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:33,860 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:33,860 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465356016] [2021-06-05 08:00:33,860 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465356016] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:33,860 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074106155] [2021-06-05 08:00:33,860 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 180 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 180 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:33,925 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:00:33,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:33,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 08:00:33,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:34,072 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:34,073 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074106155] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:34,073 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:34,073 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-06-05 08:00:34,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46405266] [2021-06-05 08:00:34,073 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 08:00:34,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:34,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 08:00:34,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2021-06-05 08:00:34,073 INFO L87 Difference]: Start difference. First operand 3388 states and 9453 transitions. Second operand has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:34,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:34,791 INFO L93 Difference]: Finished difference Result 4706 states and 12292 transitions. [2021-06-05 08:00:34,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 08:00:34,791 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-06-05 08:00:34,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:34,797 INFO L225 Difference]: With dead ends: 4706 [2021-06-05 08:00:34,798 INFO L226 Difference]: Without dead ends: 4436 [2021-06-05 08:00:34,798 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 805 ImplicationChecksByTransitivity, 707.2ms TimeCoverageRelationStatistics Valid=815, Invalid=2607, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 08:00:34,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4436 states. [2021-06-05 08:00:34,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4436 to 3463. [2021-06-05 08:00:34,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3463 states, 3462 states have (on average 2.7954939341421143) internal successors, (9678), 3462 states have internal predecessors, (9678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:34,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3463 states to 3463 states and 9678 transitions. [2021-06-05 08:00:34,847 INFO L78 Accepts]: Start accepts. Automaton has 3463 states and 9678 transitions. Word has length 125 [2021-06-05 08:00:34,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:34,848 INFO L482 AbstractCegarLoop]: Abstraction has 3463 states and 9678 transitions. [2021-06-05 08:00:34,848 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:34,848 INFO L276 IsEmpty]: Start isEmpty. Operand 3463 states and 9678 transitions. [2021-06-05 08:00:34,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-06-05 08:00:34,852 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:34,852 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:35,072 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184,180 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:35,073 INFO L430 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:35,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:35,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1249109011, now seen corresponding path program 177 times [2021-06-05 08:00:35,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:35,073 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101860447] [2021-06-05 08:00:35,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:35,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:35,300 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:35,301 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:35,301 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101860447] [2021-06-05 08:00:35,301 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101860447] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:35,301 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143178787] [2021-06-05 08:00:35,301 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 181 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 181 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:35,383 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-06-05 08:00:35,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:35,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 08:00:35,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:35,583 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:35,583 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143178787] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:35,583 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:35,583 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2021-06-05 08:00:35,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745180592] [2021-06-05 08:00:35,583 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-05 08:00:35,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:35,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-05 08:00:35,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2021-06-05 08:00:35,584 INFO L87 Difference]: Start difference. First operand 3463 states and 9678 transitions. Second operand has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:36,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:36,290 INFO L93 Difference]: Finished difference Result 4731 states and 12417 transitions. [2021-06-05 08:00:36,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 08:00:36,290 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-06-05 08:00:36,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:36,295 INFO L225 Difference]: With dead ends: 4731 [2021-06-05 08:00:36,295 INFO L226 Difference]: Without dead ends: 4461 [2021-06-05 08:00:36,296 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 870 ImplicationChecksByTransitivity, 691.8ms TimeCoverageRelationStatistics Valid=871, Invalid=2551, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 08:00:36,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4461 states. [2021-06-05 08:00:36,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4461 to 3538. [2021-06-05 08:00:36,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3538 states, 3537 states have (on average 2.799830364715861) internal successors, (9903), 3537 states have internal predecessors, (9903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:36,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3538 states to 3538 states and 9903 transitions. [2021-06-05 08:00:36,347 INFO L78 Accepts]: Start accepts. Automaton has 3538 states and 9903 transitions. Word has length 125 [2021-06-05 08:00:36,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:36,348 INFO L482 AbstractCegarLoop]: Abstraction has 3538 states and 9903 transitions. [2021-06-05 08:00:36,348 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:36,348 INFO L276 IsEmpty]: Start isEmpty. Operand 3538 states and 9903 transitions. [2021-06-05 08:00:36,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-06-05 08:00:36,351 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:36,351 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:36,568 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185,181 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:36,568 INFO L430 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:36,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:36,568 INFO L82 PathProgramCache]: Analyzing trace with hash -2046961949, now seen corresponding path program 178 times [2021-06-05 08:00:36,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:36,569 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477901557] [2021-06-05 08:00:36,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:36,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:36,766 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:36,766 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:36,766 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477901557] [2021-06-05 08:00:36,766 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477901557] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:36,766 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129810463] [2021-06-05 08:00:36,766 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 182 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 182 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:36,846 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:00:36,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:36,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 08:00:36,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:37,085 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:37,085 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129810463] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:37,085 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:37,085 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-06-05 08:00:37,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696124643] [2021-06-05 08:00:37,086 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 08:00:37,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:37,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 08:00:37,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=506, Unknown=0, NotChecked=0, Total=600 [2021-06-05 08:00:37,086 INFO L87 Difference]: Start difference. First operand 3538 states and 9903 transitions. Second operand has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:37,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:37,947 INFO L93 Difference]: Finished difference Result 4756 states and 12542 transitions. [2021-06-05 08:00:37,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 08:00:37,947 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-06-05 08:00:37,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:37,954 INFO L225 Difference]: With dead ends: 4756 [2021-06-05 08:00:37,954 INFO L226 Difference]: Without dead ends: 4486 [2021-06-05 08:00:37,955 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 899 ImplicationChecksByTransitivity, 799.5ms TimeCoverageRelationStatistics Valid=901, Invalid=2759, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 08:00:37,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4486 states. [2021-06-05 08:00:38,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4486 to 3613. [2021-06-05 08:00:38,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3613 states, 3612 states have (on average 2.8039867109634553) internal successors, (10128), 3612 states have internal predecessors, (10128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:38,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3613 states to 3613 states and 10128 transitions. [2021-06-05 08:00:38,016 INFO L78 Accepts]: Start accepts. Automaton has 3613 states and 10128 transitions. Word has length 125 [2021-06-05 08:00:38,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:38,016 INFO L482 AbstractCegarLoop]: Abstraction has 3613 states and 10128 transitions. [2021-06-05 08:00:38,016 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:38,017 INFO L276 IsEmpty]: Start isEmpty. Operand 3613 states and 10128 transitions. [2021-06-05 08:00:38,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-06-05 08:00:38,021 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:38,021 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:38,237 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186,182 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:38,237 INFO L430 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:38,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:38,237 INFO L82 PathProgramCache]: Analyzing trace with hash 368677457, now seen corresponding path program 179 times [2021-06-05 08:00:38,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:38,237 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862486068] [2021-06-05 08:00:38,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:38,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:38,416 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:38,417 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:38,417 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862486068] [2021-06-05 08:00:38,417 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862486068] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:38,417 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962277584] [2021-06-05 08:00:38,417 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 183 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 183 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:38,484 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-06-05 08:00:38,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:38,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 08:00:38,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:38,619 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:38,619 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962277584] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:38,619 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:38,619 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2021-06-05 08:00:38,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954230895] [2021-06-05 08:00:38,621 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-05 08:00:38,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:38,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-05 08:00:38,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2021-06-05 08:00:38,621 INFO L87 Difference]: Start difference. First operand 3613 states and 10128 transitions. Second operand has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:39,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:39,252 INFO L93 Difference]: Finished difference Result 4781 states and 12667 transitions. [2021-06-05 08:00:39,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 08:00:39,252 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-06-05 08:00:39,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:39,258 INFO L225 Difference]: With dead ends: 4781 [2021-06-05 08:00:39,258 INFO L226 Difference]: Without dead ends: 4511 [2021-06-05 08:00:39,259 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 965 ImplicationChecksByTransitivity, 575.4ms TimeCoverageRelationStatistics Valid=971, Invalid=2689, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 08:00:39,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4511 states. [2021-06-05 08:00:39,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4511 to 3688. [2021-06-05 08:00:39,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3688 states, 3687 states have (on average 2.807973962571196) internal successors, (10353), 3687 states have internal predecessors, (10353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:39,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3688 states to 3688 states and 10353 transitions. [2021-06-05 08:00:39,311 INFO L78 Accepts]: Start accepts. Automaton has 3688 states and 10353 transitions. Word has length 125 [2021-06-05 08:00:39,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:39,311 INFO L482 AbstractCegarLoop]: Abstraction has 3688 states and 10353 transitions. [2021-06-05 08:00:39,311 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:39,311 INFO L276 IsEmpty]: Start isEmpty. Operand 3688 states and 10353 transitions. [2021-06-05 08:00:39,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-06-05 08:00:39,314 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:39,314 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:39,534 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 183 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable187 [2021-06-05 08:00:39,534 INFO L430 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:39,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:39,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1895970527, now seen corresponding path program 180 times [2021-06-05 08:00:39,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:39,534 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623444753] [2021-06-05 08:00:39,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:39,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:39,710 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:39,710 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:39,710 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623444753] [2021-06-05 08:00:39,710 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623444753] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:39,710 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674842042] [2021-06-05 08:00:39,710 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 184 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 184 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:39,782 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-06-05 08:00:39,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:39,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 08:00:39,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:39,930 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:39,931 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674842042] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:39,931 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:39,931 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-06-05 08:00:39,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308079428] [2021-06-05 08:00:39,931 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 08:00:39,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:39,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 08:00:39,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2021-06-05 08:00:39,931 INFO L87 Difference]: Start difference. First operand 3688 states and 10353 transitions. Second operand has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:40,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:40,900 INFO L93 Difference]: Finished difference Result 4806 states and 12792 transitions. [2021-06-05 08:00:40,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 08:00:40,900 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-06-05 08:00:40,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:40,906 INFO L225 Difference]: With dead ends: 4806 [2021-06-05 08:00:40,906 INFO L226 Difference]: Without dead ends: 4536 [2021-06-05 08:00:40,907 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 960 ImplicationChecksByTransitivity, 833.5ms TimeCoverageRelationStatistics Valid=937, Invalid=2969, Unknown=0, NotChecked=0, Total=3906 [2021-06-05 08:00:40,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4536 states. [2021-06-05 08:00:40,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4536 to 3763. [2021-06-05 08:00:40,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3763 states, 3762 states have (on average 2.8118022328548644) internal successors, (10578), 3762 states have internal predecessors, (10578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:40,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3763 states to 3763 states and 10578 transitions. [2021-06-05 08:00:40,956 INFO L78 Accepts]: Start accepts. Automaton has 3763 states and 10578 transitions. Word has length 125 [2021-06-05 08:00:40,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:40,957 INFO L482 AbstractCegarLoop]: Abstraction has 3763 states and 10578 transitions. [2021-06-05 08:00:40,958 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:40,958 INFO L276 IsEmpty]: Start isEmpty. Operand 3763 states and 10578 transitions. [2021-06-05 08:00:40,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-06-05 08:00:40,962 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:40,962 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:41,177 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 184 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable188 [2021-06-05 08:00:41,177 INFO L430 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:41,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:41,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1281731057, now seen corresponding path program 181 times [2021-06-05 08:00:41,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:41,177 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085792235] [2021-06-05 08:00:41,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:41,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:41,344 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:41,344 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:41,344 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085792235] [2021-06-05 08:00:41,344 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085792235] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:41,344 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203365026] [2021-06-05 08:00:41,344 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 185 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 185 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:41,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:41,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 08:00:41,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:41,565 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:41,565 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203365026] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:41,565 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:41,565 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2021-06-05 08:00:41,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161586972] [2021-06-05 08:00:41,565 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-05 08:00:41,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:41,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-05 08:00:41,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-06-05 08:00:41,566 INFO L87 Difference]: Start difference. First operand 3763 states and 10578 transitions. Second operand has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:42,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:42,244 INFO L93 Difference]: Finished difference Result 4831 states and 12917 transitions. [2021-06-05 08:00:42,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 08:00:42,244 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-06-05 08:00:42,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:42,249 INFO L225 Difference]: With dead ends: 4831 [2021-06-05 08:00:42,250 INFO L226 Difference]: Without dead ends: 4561 [2021-06-05 08:00:42,250 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1064 ImplicationChecksByTransitivity, 600.0ms TimeCoverageRelationStatistics Valid=1087, Invalid=2819, Unknown=0, NotChecked=0, Total=3906 [2021-06-05 08:00:42,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4561 states. [2021-06-05 08:00:42,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4561 to 3838. [2021-06-05 08:00:42,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3838 states, 3837 states have (on average 2.815480844409695) internal successors, (10803), 3837 states have internal predecessors, (10803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:42,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3838 states to 3838 states and 10803 transitions. [2021-06-05 08:00:42,303 INFO L78 Accepts]: Start accepts. Automaton has 3838 states and 10803 transitions. Word has length 125 [2021-06-05 08:00:42,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:42,304 INFO L482 AbstractCegarLoop]: Abstraction has 3838 states and 10803 transitions. [2021-06-05 08:00:42,304 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:42,304 INFO L276 IsEmpty]: Start isEmpty. Operand 3838 states and 10803 transitions. [2021-06-05 08:00:42,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-06-05 08:00:42,307 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:42,307 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:42,520 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 185 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable189 [2021-06-05 08:00:42,520 INFO L430 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:42,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:42,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1297993951, now seen corresponding path program 182 times [2021-06-05 08:00:42,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:42,521 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299865772] [2021-06-05 08:00:42,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:42,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:42,703 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:42,703 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:42,703 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299865772] [2021-06-05 08:00:42,703 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299865772] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:42,703 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982320601] [2021-06-05 08:00:42,703 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 186 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 186 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:42,770 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:00:42,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:42,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 08:00:42,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:42,950 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:42,950 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982320601] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:42,950 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:42,950 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-06-05 08:00:42,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173976049] [2021-06-05 08:00:42,950 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 08:00:42,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:42,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 08:00:42,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=486, Unknown=0, NotChecked=0, Total=600 [2021-06-05 08:00:42,951 INFO L87 Difference]: Start difference. First operand 3838 states and 10803 transitions. Second operand has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:43,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:43,877 INFO L93 Difference]: Finished difference Result 4916 states and 13207 transitions. [2021-06-05 08:00:43,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 08:00:43,877 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-06-05 08:00:43,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:43,883 INFO L225 Difference]: With dead ends: 4916 [2021-06-05 08:00:43,883 INFO L226 Difference]: Without dead ends: 4646 [2021-06-05 08:00:43,883 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1099 ImplicationChecksByTransitivity, 868.9ms TimeCoverageRelationStatistics Valid=1121, Invalid=3039, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 08:00:43,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4646 states. [2021-06-05 08:00:43,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4646 to 3913. [2021-06-05 08:00:43,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3913 states, 3912 states have (on average 2.8241308793456033) internal successors, (11048), 3912 states have internal predecessors, (11048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:43,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3913 states to 3913 states and 11048 transitions. [2021-06-05 08:00:43,931 INFO L78 Accepts]: Start accepts. Automaton has 3913 states and 11048 transitions. Word has length 125 [2021-06-05 08:00:43,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:43,932 INFO L482 AbstractCegarLoop]: Abstraction has 3913 states and 11048 transitions. [2021-06-05 08:00:43,932 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:43,932 INFO L276 IsEmpty]: Start isEmpty. Operand 3913 states and 11048 transitions. [2021-06-05 08:00:43,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-06-05 08:00:43,935 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:43,935 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:44,151 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190,186 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:44,152 INFO L430 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:44,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:44,152 INFO L82 PathProgramCache]: Analyzing trace with hash 265346349, now seen corresponding path program 183 times [2021-06-05 08:00:44,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:44,152 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136370087] [2021-06-05 08:00:44,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:44,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:44,348 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:44,349 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:44,349 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136370087] [2021-06-05 08:00:44,349 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136370087] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:44,349 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850762415] [2021-06-05 08:00:44,349 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 187 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 187 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:44,422 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-06-05 08:00:44,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:44,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 08:00:44,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:44,568 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:44,568 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850762415] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:44,568 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:44,568 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2021-06-05 08:00:44,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225290572] [2021-06-05 08:00:44,568 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-05 08:00:44,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:44,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-05 08:00:44,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=425, Unknown=0, NotChecked=0, Total=552 [2021-06-05 08:00:44,570 INFO L87 Difference]: Start difference. First operand 3913 states and 11048 transitions. Second operand has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:45,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:45,241 INFO L93 Difference]: Finished difference Result 5658 states and 15331 transitions. [2021-06-05 08:00:45,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 08:00:45,242 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-06-05 08:00:45,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:45,248 INFO L225 Difference]: With dead ends: 5658 [2021-06-05 08:00:45,248 INFO L226 Difference]: Without dead ends: 5388 [2021-06-05 08:00:45,249 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1166 ImplicationChecksByTransitivity, 629.1ms TimeCoverageRelationStatistics Valid=1220, Invalid=2940, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 08:00:45,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5388 states. [2021-06-05 08:00:45,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5388 to 4093. [2021-06-05 08:00:45,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4093 states, 4092 states have (on average 2.8365102639296187) internal successors, (11607), 4092 states have internal predecessors, (11607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:45,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4093 states to 4093 states and 11607 transitions. [2021-06-05 08:00:45,303 INFO L78 Accepts]: Start accepts. Automaton has 4093 states and 11607 transitions. Word has length 125 [2021-06-05 08:00:45,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:45,303 INFO L482 AbstractCegarLoop]: Abstraction has 4093 states and 11607 transitions. [2021-06-05 08:00:45,303 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 5.208333333333333) internal successors, (125), 24 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:45,303 INFO L276 IsEmpty]: Start isEmpty. Operand 4093 states and 11607 transitions. [2021-06-05 08:00:45,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-06-05 08:00:45,307 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:45,307 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:45,521 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191,187 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:45,521 INFO L430 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:45,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:45,521 INFO L82 PathProgramCache]: Analyzing trace with hash 287689599, now seen corresponding path program 184 times [2021-06-05 08:00:45,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:45,521 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936860684] [2021-06-05 08:00:45,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:45,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:45,693 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:45,693 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:45,693 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936860684] [2021-06-05 08:00:45,693 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936860684] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:45,693 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674028563] [2021-06-05 08:00:45,693 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 188 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 188 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:45,759 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:00:45,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:45,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 08:00:45,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:45,936 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:45,936 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674028563] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:45,936 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:45,936 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-06-05 08:00:45,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706218338] [2021-06-05 08:00:45,937 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 08:00:45,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:45,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 08:00:45,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2021-06-05 08:00:45,937 INFO L87 Difference]: Start difference. First operand 4093 states and 11607 transitions. Second operand has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:46,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:46,901 INFO L93 Difference]: Finished difference Result 5120 states and 13981 transitions. [2021-06-05 08:00:46,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 08:00:46,901 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-06-05 08:00:46,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:46,907 INFO L225 Difference]: With dead ends: 5120 [2021-06-05 08:00:46,907 INFO L226 Difference]: Without dead ends: 4631 [2021-06-05 08:00:46,908 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1205 ImplicationChecksByTransitivity, 902.7ms TimeCoverageRelationStatistics Valid=1258, Invalid=3164, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 08:00:46,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4631 states. [2021-06-05 08:00:46,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4631 to 2634. [2021-06-05 08:00:46,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2634 states, 2633 states have (on average 2.7406000759589824) internal successors, (7216), 2633 states have internal predecessors, (7216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:46,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2634 states to 2634 states and 7216 transitions. [2021-06-05 08:00:46,946 INFO L78 Accepts]: Start accepts. Automaton has 2634 states and 7216 transitions. Word has length 125 [2021-06-05 08:00:46,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:46,946 INFO L482 AbstractCegarLoop]: Abstraction has 2634 states and 7216 transitions. [2021-06-05 08:00:46,946 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:46,946 INFO L276 IsEmpty]: Start isEmpty. Operand 2634 states and 7216 transitions. [2021-06-05 08:00:46,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-06-05 08:00:46,948 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:46,948 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:47,165 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192,188 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:47,165 INFO L430 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:47,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:47,165 INFO L82 PathProgramCache]: Analyzing trace with hash -325106707, now seen corresponding path program 185 times [2021-06-05 08:00:47,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:47,165 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322044876] [2021-06-05 08:00:47,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:47,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:47,621 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:47,622 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:47,622 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322044876] [2021-06-05 08:00:47,622 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322044876] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:47,622 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417000901] [2021-06-05 08:00:47,622 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 189 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 189 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:47,692 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-06-05 08:00:47,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:47,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 08:00:47,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:47,935 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:47,935 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417000901] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:47,935 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:47,935 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2021-06-05 08:00:47,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183096445] [2021-06-05 08:00:47,936 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-06-05 08:00:47,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:47,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-06-05 08:00:47,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=588, Unknown=0, NotChecked=0, Total=756 [2021-06-05 08:00:47,936 INFO L87 Difference]: Start difference. First operand 2634 states and 7216 transitions. Second operand has 28 states, 28 states have (on average 5.642857142857143) internal successors, (158), 28 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:48,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:48,498 INFO L93 Difference]: Finished difference Result 3774 states and 9816 transitions. [2021-06-05 08:00:48,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 08:00:48,498 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.642857142857143) internal successors, (158), 28 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-06-05 08:00:48,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:48,502 INFO L225 Difference]: With dead ends: 3774 [2021-06-05 08:00:48,503 INFO L226 Difference]: Without dead ends: 3440 [2021-06-05 08:00:48,503 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 573 ImplicationChecksByTransitivity, 774.9ms TimeCoverageRelationStatistics Valid=760, Invalid=2102, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 08:00:48,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3440 states. [2021-06-05 08:00:48,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3440 to 2719. [2021-06-05 08:00:48,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2719 states, 2718 states have (on average 2.717439293598234) internal successors, (7386), 2718 states have internal predecessors, (7386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:48,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2719 states to 2719 states and 7386 transitions. [2021-06-05 08:00:48,536 INFO L78 Accepts]: Start accepts. Automaton has 2719 states and 7386 transitions. Word has length 130 [2021-06-05 08:00:48,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:48,536 INFO L482 AbstractCegarLoop]: Abstraction has 2719 states and 7386 transitions. [2021-06-05 08:00:48,536 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 5.642857142857143) internal successors, (158), 28 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:48,536 INFO L276 IsEmpty]: Start isEmpty. Operand 2719 states and 7386 transitions. [2021-06-05 08:00:48,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-06-05 08:00:48,538 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:48,538 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:48,739 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193,189 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:48,739 INFO L430 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:48,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:48,739 INFO L82 PathProgramCache]: Analyzing trace with hash -2008975183, now seen corresponding path program 186 times [2021-06-05 08:00:48,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:48,739 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658893220] [2021-06-05 08:00:48,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:48,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:49,006 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:49,006 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:49,006 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658893220] [2021-06-05 08:00:49,006 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658893220] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:49,007 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068944482] [2021-06-05 08:00:49,008 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 190 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 190 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:49,090 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-06-05 08:00:49,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:49,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 08:00:49,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:49,308 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:49,308 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068944482] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:49,308 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:49,309 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-06-05 08:00:49,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217964277] [2021-06-05 08:00:49,309 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 08:00:49,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:49,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 08:00:49,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2021-06-05 08:00:49,309 INFO L87 Difference]: Start difference. First operand 2719 states and 7386 transitions. Second operand has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:49,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:49,735 INFO L93 Difference]: Finished difference Result 4696 states and 11597 transitions. [2021-06-05 08:00:49,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 08:00:49,735 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-06-05 08:00:49,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:49,740 INFO L225 Difference]: With dead ends: 4696 [2021-06-05 08:00:49,740 INFO L226 Difference]: Without dead ends: 4426 [2021-06-05 08:00:49,741 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 520.9ms TimeCoverageRelationStatistics Valid=616, Invalid=1640, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 08:00:49,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4426 states. [2021-06-05 08:00:49,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4426 to 2863. [2021-06-05 08:00:49,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2863 states, 2862 states have (on average 2.7264150943396226) internal successors, (7803), 2862 states have internal predecessors, (7803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:49,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2863 states to 2863 states and 7803 transitions. [2021-06-05 08:00:49,788 INFO L78 Accepts]: Start accepts. Automaton has 2863 states and 7803 transitions. Word has length 130 [2021-06-05 08:00:49,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:49,788 INFO L482 AbstractCegarLoop]: Abstraction has 2863 states and 7803 transitions. [2021-06-05 08:00:49,788 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:49,788 INFO L276 IsEmpty]: Start isEmpty. Operand 2863 states and 7803 transitions. [2021-06-05 08:00:49,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-06-05 08:00:49,791 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:49,791 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:50,007 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 190 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable194 [2021-06-05 08:00:50,008 INFO L430 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:50,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:50,008 INFO L82 PathProgramCache]: Analyzing trace with hash -644426879, now seen corresponding path program 187 times [2021-06-05 08:00:50,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:50,008 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555208931] [2021-06-05 08:00:50,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:50,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:50,259 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:50,259 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:50,259 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555208931] [2021-06-05 08:00:50,259 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555208931] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:50,259 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789126841] [2021-06-05 08:00:50,259 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 191 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 191 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:50,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:50,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 08:00:50,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:50,515 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:50,515 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789126841] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:50,515 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:50,515 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2021-06-05 08:00:50,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686363721] [2021-06-05 08:00:50,516 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-06-05 08:00:50,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:50,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-06-05 08:00:50,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=518, Unknown=0, NotChecked=0, Total=650 [2021-06-05 08:00:50,516 INFO L87 Difference]: Start difference. First operand 2863 states and 7803 transitions. Second operand has 26 states, 26 states have (on average 5.076923076923077) internal successors, (132), 26 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:51,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:51,061 INFO L93 Difference]: Finished difference Result 4656 states and 11592 transitions. [2021-06-05 08:00:51,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 08:00:51,061 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.076923076923077) internal successors, (132), 26 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-06-05 08:00:51,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:51,066 INFO L225 Difference]: With dead ends: 4656 [2021-06-05 08:00:51,066 INFO L226 Difference]: Without dead ends: 4386 [2021-06-05 08:00:51,066 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 614.2ms TimeCoverageRelationStatistics Valid=683, Invalid=1969, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 08:00:51,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4386 states. [2021-06-05 08:00:51,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4386 to 2938. [2021-06-05 08:00:51,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2938 states, 2937 states have (on average 2.7334014300306437) internal successors, (8028), 2937 states have internal predecessors, (8028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:51,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2938 states to 2938 states and 8028 transitions. [2021-06-05 08:00:51,105 INFO L78 Accepts]: Start accepts. Automaton has 2938 states and 8028 transitions. Word has length 130 [2021-06-05 08:00:51,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:51,105 INFO L482 AbstractCegarLoop]: Abstraction has 2938 states and 8028 transitions. [2021-06-05 08:00:51,105 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 5.076923076923077) internal successors, (132), 26 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:51,105 INFO L276 IsEmpty]: Start isEmpty. Operand 2938 states and 8028 transitions. [2021-06-05 08:00:51,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-06-05 08:00:51,107 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:51,107 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:51,325 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195,191 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:51,325 INFO L430 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:51,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:51,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1373308399, now seen corresponding path program 188 times [2021-06-05 08:00:51,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:51,325 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197758595] [2021-06-05 08:00:51,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:51,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:51,544 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:51,544 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:51,544 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197758595] [2021-06-05 08:00:51,544 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197758595] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:51,544 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400880507] [2021-06-05 08:00:51,544 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 192 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 192 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:51,612 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:00:51,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:51,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 08:00:51,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:51,789 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:51,789 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400880507] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:51,789 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:51,789 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-06-05 08:00:51,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126390673] [2021-06-05 08:00:51,789 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 08:00:51,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:51,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 08:00:51,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2021-06-05 08:00:51,790 INFO L87 Difference]: Start difference. First operand 2938 states and 8028 transitions. Second operand has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:52,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:52,353 INFO L93 Difference]: Finished difference Result 4706 states and 11767 transitions. [2021-06-05 08:00:52,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 08:00:52,353 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-06-05 08:00:52,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:52,358 INFO L225 Difference]: With dead ends: 4706 [2021-06-05 08:00:52,358 INFO L226 Difference]: Without dead ends: 4436 [2021-06-05 08:00:52,358 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 591.4ms TimeCoverageRelationStatistics Valid=621, Invalid=1829, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 08:00:52,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4436 states. [2021-06-05 08:00:52,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4436 to 3013. [2021-06-05 08:00:52,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3013 states, 3012 states have (on average 2.74003984063745) internal successors, (8253), 3012 states have internal predecessors, (8253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:52,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3013 states to 3013 states and 8253 transitions. [2021-06-05 08:00:52,409 INFO L78 Accepts]: Start accepts. Automaton has 3013 states and 8253 transitions. Word has length 130 [2021-06-05 08:00:52,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:52,409 INFO L482 AbstractCegarLoop]: Abstraction has 3013 states and 8253 transitions. [2021-06-05 08:00:52,409 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:52,409 INFO L276 IsEmpty]: Start isEmpty. Operand 3013 states and 8253 transitions. [2021-06-05 08:00:52,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-06-05 08:00:52,412 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:52,412 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:52,624 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196,192 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:52,625 INFO L430 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:52,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:52,625 INFO L82 PathProgramCache]: Analyzing trace with hash 474784959, now seen corresponding path program 189 times [2021-06-05 08:00:52,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:52,625 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308310370] [2021-06-05 08:00:52,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:52,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:52,990 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:52,990 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:52,990 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308310370] [2021-06-05 08:00:52,991 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308310370] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:52,991 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775377944] [2021-06-05 08:00:52,991 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 193 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 193 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:53,074 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-06-05 08:00:53,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:53,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 08:00:53,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:53,238 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:53,238 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775377944] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:53,238 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:53,238 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2021-06-05 08:00:53,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286784038] [2021-06-05 08:00:53,238 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-06-05 08:00:53,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:53,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-06-05 08:00:53,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2021-06-05 08:00:53,239 INFO L87 Difference]: Start difference. First operand 3013 states and 8253 transitions. Second operand has 26 states, 26 states have (on average 5.076923076923077) internal successors, (132), 26 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:53,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:53,823 INFO L93 Difference]: Finished difference Result 4731 states and 11892 transitions. [2021-06-05 08:00:53,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 08:00:53,823 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.076923076923077) internal successors, (132), 26 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-06-05 08:00:53,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:53,828 INFO L225 Difference]: With dead ends: 4731 [2021-06-05 08:00:53,828 INFO L226 Difference]: Without dead ends: 4461 [2021-06-05 08:00:53,828 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 757.9ms TimeCoverageRelationStatistics Valid=696, Invalid=2166, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 08:00:53,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4461 states. [2021-06-05 08:00:53,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4461 to 3088. [2021-06-05 08:00:53,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3088 states, 3087 states have (on average 2.746355685131195) internal successors, (8478), 3087 states have internal predecessors, (8478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:53,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3088 states to 3088 states and 8478 transitions. [2021-06-05 08:00:53,868 INFO L78 Accepts]: Start accepts. Automaton has 3088 states and 8478 transitions. Word has length 130 [2021-06-05 08:00:53,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:53,868 INFO L482 AbstractCegarLoop]: Abstraction has 3088 states and 8478 transitions. [2021-06-05 08:00:53,868 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 5.076923076923077) internal successors, (132), 26 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:53,868 INFO L276 IsEmpty]: Start isEmpty. Operand 3088 states and 8478 transitions. [2021-06-05 08:00:53,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-06-05 08:00:53,870 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:53,870 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:54,071 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197,193 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:54,071 INFO L430 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:54,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:54,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1140168531, now seen corresponding path program 190 times [2021-06-05 08:00:54,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:54,071 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906373555] [2021-06-05 08:00:54,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:54,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:54,287 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:54,287 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:54,287 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906373555] [2021-06-05 08:00:54,287 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906373555] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:54,288 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782389789] [2021-06-05 08:00:54,288 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 194 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 194 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:54,356 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:00:54,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:54,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 08:00:54,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:54,547 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:54,547 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782389789] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:54,547 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:54,547 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-06-05 08:00:54,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840893226] [2021-06-05 08:00:54,547 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 08:00:54,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:54,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 08:00:54,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=490, Unknown=0, NotChecked=0, Total=600 [2021-06-05 08:00:54,548 INFO L87 Difference]: Start difference. First operand 3088 states and 8478 transitions. Second operand has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:55,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:55,077 INFO L93 Difference]: Finished difference Result 4756 states and 12017 transitions. [2021-06-05 08:00:55,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 08:00:55,078 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-06-05 08:00:55,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:55,083 INFO L225 Difference]: With dead ends: 4756 [2021-06-05 08:00:55,083 INFO L226 Difference]: Without dead ends: 4486 [2021-06-05 08:00:55,083 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 547.6ms TimeCoverageRelationStatistics Valid=642, Invalid=2010, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 08:00:55,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4486 states. [2021-06-05 08:00:55,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4486 to 3163. [2021-06-05 08:00:55,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3163 states, 3162 states have (on average 2.752371916508539) internal successors, (8703), 3162 states have internal predecessors, (8703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:55,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3163 states to 3163 states and 8703 transitions. [2021-06-05 08:00:55,129 INFO L78 Accepts]: Start accepts. Automaton has 3163 states and 8703 transitions. Word has length 130 [2021-06-05 08:00:55,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:55,129 INFO L482 AbstractCegarLoop]: Abstraction has 3163 states and 8703 transitions. [2021-06-05 08:00:55,130 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:55,130 INFO L276 IsEmpty]: Start isEmpty. Operand 3163 states and 8703 transitions. [2021-06-05 08:00:55,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-06-05 08:00:55,132 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:55,132 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:55,350 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198,194 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:55,350 INFO L430 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:55,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:55,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1520612483, now seen corresponding path program 191 times [2021-06-05 08:00:55,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:55,351 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049311931] [2021-06-05 08:00:55,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:55,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:55,603 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:55,604 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:55,604 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049311931] [2021-06-05 08:00:55,604 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049311931] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:55,604 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002522126] [2021-06-05 08:00:55,604 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 195 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 195 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:55,675 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-06-05 08:00:55,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:55,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 08:00:55,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:55,897 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:55,897 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002522126] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:55,897 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:55,897 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2021-06-05 08:00:55,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315465327] [2021-06-05 08:00:55,898 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-06-05 08:00:55,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:55,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-06-05 08:00:55,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=544, Unknown=0, NotChecked=0, Total=650 [2021-06-05 08:00:55,898 INFO L87 Difference]: Start difference. First operand 3163 states and 8703 transitions. Second operand has 26 states, 26 states have (on average 5.076923076923077) internal successors, (132), 26 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:56,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:56,580 INFO L93 Difference]: Finished difference Result 4781 states and 12142 transitions. [2021-06-05 08:00:56,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 08:00:56,580 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.076923076923077) internal successors, (132), 26 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-06-05 08:00:56,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:56,585 INFO L225 Difference]: With dead ends: 4781 [2021-06-05 08:00:56,585 INFO L226 Difference]: Without dead ends: 4511 [2021-06-05 08:00:56,585 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 740.2ms TimeCoverageRelationStatistics Valid=725, Invalid=2355, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 08:00:56,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4511 states. [2021-06-05 08:00:56,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4511 to 3238. [2021-06-05 08:00:56,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3238 states, 3237 states have (on average 2.7581093605189992) internal successors, (8928), 3237 states have internal predecessors, (8928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:56,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3238 states to 3238 states and 8928 transitions. [2021-06-05 08:00:56,628 INFO L78 Accepts]: Start accepts. Automaton has 3238 states and 8928 transitions. Word has length 130 [2021-06-05 08:00:56,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:56,628 INFO L482 AbstractCegarLoop]: Abstraction has 3238 states and 8928 transitions. [2021-06-05 08:00:56,628 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 5.076923076923077) internal successors, (132), 26 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:56,628 INFO L276 IsEmpty]: Start isEmpty. Operand 3238 states and 8928 transitions. [2021-06-05 08:00:56,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-06-05 08:00:56,631 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:56,631 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:56,833 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 195 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable199 [2021-06-05 08:00:56,833 INFO L430 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:56,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:56,833 INFO L82 PathProgramCache]: Analyzing trace with hash -896237333, now seen corresponding path program 192 times [2021-06-05 08:00:56,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:56,833 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084798032] [2021-06-05 08:00:56,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:56,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:57,037 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:57,037 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:57,037 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084798032] [2021-06-05 08:00:57,037 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084798032] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:57,037 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142031661] [2021-06-05 08:00:57,038 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 196 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 196 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:57,114 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-06-05 08:00:57,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:00:57,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 08:00:57,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:57,262 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:57,262 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142031661] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:57,262 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:57,262 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-06-05 08:00:57,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064418443] [2021-06-05 08:00:57,262 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 08:00:57,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:57,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 08:00:57,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2021-06-05 08:00:57,263 INFO L87 Difference]: Start difference. First operand 3238 states and 8928 transitions. Second operand has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:57,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:57,867 INFO L93 Difference]: Finished difference Result 4806 states and 12267 transitions. [2021-06-05 08:00:57,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 08:00:57,867 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-06-05 08:00:57,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:57,873 INFO L225 Difference]: With dead ends: 4806 [2021-06-05 08:00:57,873 INFO L226 Difference]: Without dead ends: 4536 [2021-06-05 08:00:57,874 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 560.5ms TimeCoverageRelationStatistics Valid=679, Invalid=2183, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 08:00:57,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4536 states. [2021-06-05 08:00:57,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4536 to 3313. [2021-06-05 08:00:57,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3313 states, 3312 states have (on average 2.7635869565217392) internal successors, (9153), 3312 states have internal predecessors, (9153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:57,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3313 states to 3313 states and 9153 transitions. [2021-06-05 08:00:57,922 INFO L78 Accepts]: Start accepts. Automaton has 3313 states and 9153 transitions. Word has length 130 [2021-06-05 08:00:57,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:57,922 INFO L482 AbstractCegarLoop]: Abstraction has 3313 states and 9153 transitions. [2021-06-05 08:00:57,923 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:57,923 INFO L276 IsEmpty]: Start isEmpty. Operand 3313 states and 9153 transitions. [2021-06-05 08:00:57,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-06-05 08:00:57,925 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:57,925 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:58,142 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 196 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable200 [2021-06-05 08:00:58,143 INFO L430 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:58,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:58,143 INFO L82 PathProgramCache]: Analyzing trace with hash -87185477, now seen corresponding path program 193 times [2021-06-05 08:00:58,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:58,143 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427366203] [2021-06-05 08:00:58,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:58,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:58,403 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:58,403 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:58,403 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427366203] [2021-06-05 08:00:58,403 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427366203] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:58,403 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727687698] [2021-06-05 08:00:58,403 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 197 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 197 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:00:58,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:58,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 08:00:58,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:00:58,677 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:58,677 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727687698] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:58,677 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:00:58,677 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2021-06-05 08:00:58,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315088316] [2021-06-05 08:00:58,678 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-06-05 08:00:58,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:00:58,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-06-05 08:00:58,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=551, Unknown=0, NotChecked=0, Total=650 [2021-06-05 08:00:58,678 INFO L87 Difference]: Start difference. First operand 3313 states and 9153 transitions. Second operand has 26 states, 26 states have (on average 5.076923076923077) internal successors, (132), 26 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:59,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:00:59,406 INFO L93 Difference]: Finished difference Result 4831 states and 12392 transitions. [2021-06-05 08:00:59,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 08:00:59,406 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.076923076923077) internal successors, (132), 26 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-06-05 08:00:59,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:00:59,411 INFO L225 Difference]: With dead ends: 4831 [2021-06-05 08:00:59,411 INFO L226 Difference]: Without dead ends: 4561 [2021-06-05 08:00:59,412 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 689 ImplicationChecksByTransitivity, 764.2ms TimeCoverageRelationStatistics Valid=770, Invalid=2536, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 08:00:59,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4561 states. [2021-06-05 08:00:59,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4561 to 3388. [2021-06-05 08:00:59,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3388 states, 3387 states have (on average 2.7688219663418954) internal successors, (9378), 3387 states have internal predecessors, (9378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:59,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3388 states to 3388 states and 9378 transitions. [2021-06-05 08:00:59,471 INFO L78 Accepts]: Start accepts. Automaton has 3388 states and 9378 transitions. Word has length 130 [2021-06-05 08:00:59,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:00:59,471 INFO L482 AbstractCegarLoop]: Abstraction has 3388 states and 9378 transitions. [2021-06-05 08:00:59,471 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 5.076923076923077) internal successors, (132), 26 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:00:59,471 INFO L276 IsEmpty]: Start isEmpty. Operand 3388 states and 9378 transitions. [2021-06-05 08:00:59,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-06-05 08:00:59,473 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:00:59,473 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:00:59,689 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 197 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable201 [2021-06-05 08:00:59,689 INFO L430 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:00:59,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:00:59,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1479135575, now seen corresponding path program 194 times [2021-06-05 08:00:59,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:00:59,689 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050816803] [2021-06-05 08:00:59,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:00:59,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:00:59,932 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:00:59,932 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:00:59,932 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050816803] [2021-06-05 08:00:59,932 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050816803] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:00:59,932 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27559536] [2021-06-05 08:00:59,932 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 198 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 198 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:00,000 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:01:00,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:00,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 08:01:00,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:00,144 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:00,144 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27559536] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:00,144 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:00,145 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-06-05 08:01:00,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266403271] [2021-06-05 08:01:00,145 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 08:01:00,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:00,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 08:01:00,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2021-06-05 08:01:00,145 INFO L87 Difference]: Start difference. First operand 3388 states and 9378 transitions. Second operand has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:00,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:00,707 INFO L93 Difference]: Finished difference Result 4856 states and 12517 transitions. [2021-06-05 08:01:00,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 08:01:00,708 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-06-05 08:01:00,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:00,713 INFO L225 Difference]: With dead ends: 4856 [2021-06-05 08:01:00,713 INFO L226 Difference]: Without dead ends: 4586 [2021-06-05 08:01:00,714 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 670 ImplicationChecksByTransitivity, 583.2ms TimeCoverageRelationStatistics Valid=732, Invalid=2348, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 08:01:00,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4586 states. [2021-06-05 08:01:00,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4586 to 3463. [2021-06-05 08:01:00,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3463 states, 3462 states have (on average 2.7738301559792027) internal successors, (9603), 3462 states have internal predecessors, (9603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:00,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3463 states to 3463 states and 9603 transitions. [2021-06-05 08:01:00,763 INFO L78 Accepts]: Start accepts. Automaton has 3463 states and 9603 transitions. Word has length 130 [2021-06-05 08:01:00,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:00,763 INFO L482 AbstractCegarLoop]: Abstraction has 3463 states and 9603 transitions. [2021-06-05 08:01:00,763 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:00,763 INFO L276 IsEmpty]: Start isEmpty. Operand 3463 states and 9603 transitions. [2021-06-05 08:01:00,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-06-05 08:01:00,767 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:00,767 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:00,979 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 198 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable202 [2021-06-05 08:01:00,980 INFO L430 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:00,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:00,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1724212871, now seen corresponding path program 195 times [2021-06-05 08:01:00,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:00,980 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798822670] [2021-06-05 08:01:00,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:00,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:01,212 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:01,212 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:01,212 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798822670] [2021-06-05 08:01:01,212 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798822670] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:01,212 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180133467] [2021-06-05 08:01:01,212 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 199 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 199 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:01,288 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-06-05 08:01:01,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:01,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 08:01:01,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:01,461 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:01,461 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180133467] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:01,462 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:01,462 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2021-06-05 08:01:01,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846728148] [2021-06-05 08:01:01,462 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-06-05 08:01:01,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:01,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-06-05 08:01:01,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=554, Unknown=0, NotChecked=0, Total=650 [2021-06-05 08:01:01,462 INFO L87 Difference]: Start difference. First operand 3463 states and 9603 transitions. Second operand has 26 states, 26 states have (on average 5.076923076923077) internal successors, (132), 26 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:02,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:02,292 INFO L93 Difference]: Finished difference Result 4881 states and 12642 transitions. [2021-06-05 08:01:02,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 08:01:02,293 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.076923076923077) internal successors, (132), 26 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-06-05 08:01:02,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:02,298 INFO L225 Difference]: With dead ends: 4881 [2021-06-05 08:01:02,298 INFO L226 Difference]: Without dead ends: 4611 [2021-06-05 08:01:02,299 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 691 ImplicationChecksByTransitivity, 818.8ms TimeCoverageRelationStatistics Valid=734, Invalid=2572, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 08:01:02,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4611 states. [2021-06-05 08:01:02,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4611 to 3538. [2021-06-05 08:01:02,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3538 states, 3537 states have (on average 2.7786259541984735) internal successors, (9828), 3537 states have internal predecessors, (9828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:02,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3538 states to 3538 states and 9828 transitions. [2021-06-05 08:01:02,348 INFO L78 Accepts]: Start accepts. Automaton has 3538 states and 9828 transitions. Word has length 130 [2021-06-05 08:01:02,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:02,348 INFO L482 AbstractCegarLoop]: Abstraction has 3538 states and 9828 transitions. [2021-06-05 08:01:02,348 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 5.076923076923077) internal successors, (132), 26 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:02,348 INFO L276 IsEmpty]: Start isEmpty. Operand 3538 states and 9828 transitions. [2021-06-05 08:01:02,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-06-05 08:01:02,351 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:02,352 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:02,563 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203,199 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:02,563 INFO L430 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:02,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:02,563 INFO L82 PathProgramCache]: Analyzing trace with hash -2101063193, now seen corresponding path program 196 times [2021-06-05 08:01:02,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:02,563 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770119091] [2021-06-05 08:01:02,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:02,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:02,826 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:02,827 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:02,827 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770119091] [2021-06-05 08:01:02,827 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770119091] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:02,827 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535539512] [2021-06-05 08:01:02,827 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 200 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 200 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:02,894 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:01:02,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:02,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 08:01:02,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:03,126 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:03,126 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535539512] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:03,126 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:03,126 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-06-05 08:01:03,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428320776] [2021-06-05 08:01:03,126 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 08:01:03,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:03,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 08:01:03,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2021-06-05 08:01:03,127 INFO L87 Difference]: Start difference. First operand 3538 states and 9828 transitions. Second operand has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:03,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:03,703 INFO L93 Difference]: Finished difference Result 4906 states and 12767 transitions. [2021-06-05 08:01:03,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 08:01:03,703 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-06-05 08:01:03,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:03,709 INFO L225 Difference]: With dead ends: 4906 [2021-06-05 08:01:03,709 INFO L226 Difference]: Without dead ends: 4636 [2021-06-05 08:01:03,709 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 750 ImplicationChecksByTransitivity, 635.2ms TimeCoverageRelationStatistics Valid=801, Invalid=2505, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 08:01:03,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4636 states. [2021-06-05 08:01:03,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4636 to 3613. [2021-06-05 08:01:03,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3613 states, 3612 states have (on average 2.7832225913621262) internal successors, (10053), 3612 states have internal predecessors, (10053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:03,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3613 states to 3613 states and 10053 transitions. [2021-06-05 08:01:03,759 INFO L78 Accepts]: Start accepts. Automaton has 3613 states and 10053 transitions. Word has length 130 [2021-06-05 08:01:03,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:03,759 INFO L482 AbstractCegarLoop]: Abstraction has 3613 states and 10053 transitions. [2021-06-05 08:01:03,759 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:03,759 INFO L276 IsEmpty]: Start isEmpty. Operand 3613 states and 10053 transitions. [2021-06-05 08:01:03,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-06-05 08:01:03,762 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:03,762 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:03,978 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 200 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable204 [2021-06-05 08:01:03,978 INFO L430 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:03,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:03,978 INFO L82 PathProgramCache]: Analyzing trace with hash -774307657, now seen corresponding path program 197 times [2021-06-05 08:01:03,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:03,978 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46025771] [2021-06-05 08:01:03,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:04,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:04,234 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:04,234 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:04,234 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46025771] [2021-06-05 08:01:04,234 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46025771] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:04,234 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50872332] [2021-06-05 08:01:04,234 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 201 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 201 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:04,303 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-06-05 08:01:04,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:04,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 08:01:04,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:04,471 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:04,471 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50872332] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:04,471 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:04,471 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2021-06-05 08:01:04,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859158893] [2021-06-05 08:01:04,471 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-06-05 08:01:04,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:04,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-06-05 08:01:04,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650 [2021-06-05 08:01:04,472 INFO L87 Difference]: Start difference. First operand 3613 states and 10053 transitions. Second operand has 26 states, 26 states have (on average 5.076923076923077) internal successors, (132), 26 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:05,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:05,223 INFO L93 Difference]: Finished difference Result 4931 states and 12892 transitions. [2021-06-05 08:01:05,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 08:01:05,223 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.076923076923077) internal successors, (132), 26 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-06-05 08:01:05,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:05,229 INFO L225 Difference]: With dead ends: 4931 [2021-06-05 08:01:05,229 INFO L226 Difference]: Without dead ends: 4661 [2021-06-05 08:01:05,230 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 859 ImplicationChecksByTransitivity, 766.5ms TimeCoverageRelationStatistics Valid=908, Invalid=2874, Unknown=0, NotChecked=0, Total=3782 [2021-06-05 08:01:05,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4661 states. [2021-06-05 08:01:05,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4661 to 3688. [2021-06-05 08:01:05,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3688 states, 3687 states have (on average 2.787632221318145) internal successors, (10278), 3687 states have internal predecessors, (10278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:05,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3688 states to 3688 states and 10278 transitions. [2021-06-05 08:01:05,280 INFO L78 Accepts]: Start accepts. Automaton has 3688 states and 10278 transitions. Word has length 130 [2021-06-05 08:01:05,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:05,280 INFO L482 AbstractCegarLoop]: Abstraction has 3688 states and 10278 transitions. [2021-06-05 08:01:05,280 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 5.076923076923077) internal successors, (132), 26 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:05,281 INFO L276 IsEmpty]: Start isEmpty. Operand 3688 states and 10278 transitions. [2021-06-05 08:01:05,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-06-05 08:01:05,284 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:05,284 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:05,497 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205,201 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:05,497 INFO L430 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:05,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:05,497 INFO L82 PathProgramCache]: Analyzing trace with hash -320091483, now seen corresponding path program 198 times [2021-06-05 08:01:05,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:05,497 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391146176] [2021-06-05 08:01:05,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:05,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:05,826 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:05,826 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:05,826 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391146176] [2021-06-05 08:01:05,826 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391146176] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:05,826 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70111961] [2021-06-05 08:01:05,826 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 202 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 202 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:05,912 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-06-05 08:01:05,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:05,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 08:01:05,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:06,074 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:06,075 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [70111961] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:06,075 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:06,075 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-06-05 08:01:06,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024708381] [2021-06-05 08:01:06,093 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 08:01:06,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:06,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 08:01:06,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2021-06-05 08:01:06,093 INFO L87 Difference]: Start difference. First operand 3688 states and 10278 transitions. Second operand has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:06,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:06,958 INFO L93 Difference]: Finished difference Result 4956 states and 13017 transitions. [2021-06-05 08:01:06,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 08:01:06,958 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-06-05 08:01:06,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:06,963 INFO L225 Difference]: With dead ends: 4956 [2021-06-05 08:01:06,963 INFO L226 Difference]: Without dead ends: 4686 [2021-06-05 08:01:06,964 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 834 ImplicationChecksByTransitivity, 838.5ms TimeCoverageRelationStatistics Valid=886, Invalid=2654, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 08:01:06,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4686 states. [2021-06-05 08:01:07,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4686 to 3763. [2021-06-05 08:01:07,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3763 states, 3762 states have (on average 2.791866028708134) internal successors, (10503), 3762 states have internal predecessors, (10503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:07,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3763 states to 3763 states and 10503 transitions. [2021-06-05 08:01:07,016 INFO L78 Accepts]: Start accepts. Automaton has 3763 states and 10503 transitions. Word has length 130 [2021-06-05 08:01:07,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:07,016 INFO L482 AbstractCegarLoop]: Abstraction has 3763 states and 10503 transitions. [2021-06-05 08:01:07,016 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:07,016 INFO L276 IsEmpty]: Start isEmpty. Operand 3763 states and 10503 transitions. [2021-06-05 08:01:07,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-06-05 08:01:07,020 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:07,020 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:07,235 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 202 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable206 [2021-06-05 08:01:07,235 INFO L430 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:07,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:07,235 INFO L82 PathProgramCache]: Analyzing trace with hash 678804853, now seen corresponding path program 199 times [2021-06-05 08:01:07,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:07,235 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393162534] [2021-06-05 08:01:07,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:07,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:07,468 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:07,468 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:07,468 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393162534] [2021-06-05 08:01:07,468 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393162534] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:07,468 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239657047] [2021-06-05 08:01:07,468 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 203 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 203 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:07,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:07,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 08:01:07,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:07,687 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:07,687 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239657047] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:07,687 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:07,688 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2021-06-05 08:01:07,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921607493] [2021-06-05 08:01:07,688 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-06-05 08:01:07,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:07,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-06-05 08:01:07,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2021-06-05 08:01:07,688 INFO L87 Difference]: Start difference. First operand 3763 states and 10503 transitions. Second operand has 26 states, 26 states have (on average 5.076923076923077) internal successors, (132), 26 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:08,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:08,546 INFO L93 Difference]: Finished difference Result 4981 states and 13142 transitions. [2021-06-05 08:01:08,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 08:01:08,546 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.076923076923077) internal successors, (132), 26 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-06-05 08:01:08,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:08,552 INFO L225 Difference]: With dead ends: 4981 [2021-06-05 08:01:08,552 INFO L226 Difference]: Without dead ends: 4711 [2021-06-05 08:01:08,553 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 851.4ms TimeCoverageRelationStatistics Valid=1001, Invalid=3031, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 08:01:08,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4711 states. [2021-06-05 08:01:08,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4711 to 3838. [2021-06-05 08:01:08,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3838 states, 3837 states have (on average 2.7959343236903833) internal successors, (10728), 3837 states have internal predecessors, (10728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:08,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3838 states to 3838 states and 10728 transitions. [2021-06-05 08:01:08,609 INFO L78 Accepts]: Start accepts. Automaton has 3838 states and 10728 transitions. Word has length 130 [2021-06-05 08:01:08,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:08,609 INFO L482 AbstractCegarLoop]: Abstraction has 3838 states and 10728 transitions. [2021-06-05 08:01:08,609 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 5.076923076923077) internal successors, (132), 26 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:08,609 INFO L276 IsEmpty]: Start isEmpty. Operand 3838 states and 10728 transitions. [2021-06-05 08:01:08,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-06-05 08:01:08,612 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:08,613 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:08,829 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207,203 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:08,829 INFO L430 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:08,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:08,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1200523037, now seen corresponding path program 200 times [2021-06-05 08:01:08,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:08,830 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36329534] [2021-06-05 08:01:08,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:08,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:09,363 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:09,363 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:09,363 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36329534] [2021-06-05 08:01:09,363 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36329534] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:09,364 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374659805] [2021-06-05 08:01:09,364 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 204 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 204 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:09,432 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:01:09,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:09,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 08:01:09,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:09,575 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:09,575 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374659805] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:09,575 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:09,575 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-06-05 08:01:09,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238597721] [2021-06-05 08:01:09,575 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 08:01:09,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:09,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 08:01:09,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=490, Unknown=0, NotChecked=0, Total=600 [2021-06-05 08:01:09,576 INFO L87 Difference]: Start difference. First operand 3838 states and 10728 transitions. Second operand has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:10,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:10,366 INFO L93 Difference]: Finished difference Result 5006 states and 13267 transitions. [2021-06-05 08:01:10,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 08:01:10,366 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-06-05 08:01:10,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:10,371 INFO L225 Difference]: With dead ends: 5006 [2021-06-05 08:01:10,371 INFO L226 Difference]: Without dead ends: 4736 [2021-06-05 08:01:10,371 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 922 ImplicationChecksByTransitivity, 997.1ms TimeCoverageRelationStatistics Valid=987, Invalid=2795, Unknown=0, NotChecked=0, Total=3782 [2021-06-05 08:01:10,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4736 states. [2021-06-05 08:01:10,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4736 to 3913. [2021-06-05 08:01:10,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3913 states, 3912 states have (on average 2.7998466257668713) internal successors, (10953), 3912 states have internal predecessors, (10953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:10,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3913 states to 3913 states and 10953 transitions. [2021-06-05 08:01:10,419 INFO L78 Accepts]: Start accepts. Automaton has 3913 states and 10953 transitions. Word has length 130 [2021-06-05 08:01:10,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:10,419 INFO L482 AbstractCegarLoop]: Abstraction has 3913 states and 10953 transitions. [2021-06-05 08:01:10,419 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:10,419 INFO L276 IsEmpty]: Start isEmpty. Operand 3913 states and 10953 transitions. [2021-06-05 08:01:10,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-06-05 08:01:10,423 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:10,423 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:10,638 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208,204 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:10,638 INFO L430 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:10,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:10,639 INFO L82 PathProgramCache]: Analyzing trace with hash 829796275, now seen corresponding path program 201 times [2021-06-05 08:01:10,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:10,639 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880895874] [2021-06-05 08:01:10,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:10,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:10,850 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:10,850 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:10,850 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880895874] [2021-06-05 08:01:10,850 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880895874] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:10,850 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537872399] [2021-06-05 08:01:10,850 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 205 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 205 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:10,929 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-06-05 08:01:10,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:10,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 31 conjunts are in the unsatisfiable core [2021-06-05 08:01:10,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:11,078 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:11,079 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537872399] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:11,079 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:11,079 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2021-06-05 08:01:11,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373607482] [2021-06-05 08:01:11,079 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-06-05 08:01:11,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:11,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-06-05 08:01:11,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=539, Unknown=0, NotChecked=0, Total=650 [2021-06-05 08:01:11,079 INFO L87 Difference]: Start difference. First operand 3913 states and 10953 transitions. Second operand has 26 states, 26 states have (on average 5.076923076923077) internal successors, (132), 26 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:11,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:11,921 INFO L93 Difference]: Finished difference Result 5031 states and 13392 transitions. [2021-06-05 08:01:11,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 08:01:11,921 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.076923076923077) internal successors, (132), 26 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-06-05 08:01:11,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:11,927 INFO L225 Difference]: With dead ends: 5031 [2021-06-05 08:01:11,927 INFO L226 Difference]: Without dead ends: 4761 [2021-06-05 08:01:11,928 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 940 ImplicationChecksByTransitivity, 764.6ms TimeCoverageRelationStatistics Valid=950, Invalid=3082, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 08:01:11,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4761 states. [2021-06-05 08:01:11,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4761 to 3988. [2021-06-05 08:01:11,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3988 states, 3987 states have (on average 2.8036117381489842) internal successors, (11178), 3987 states have internal predecessors, (11178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:11,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3988 states to 3988 states and 11178 transitions. [2021-06-05 08:01:11,981 INFO L78 Accepts]: Start accepts. Automaton has 3988 states and 11178 transitions. Word has length 130 [2021-06-05 08:01:11,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:11,982 INFO L482 AbstractCegarLoop]: Abstraction has 3988 states and 11178 transitions. [2021-06-05 08:01:11,982 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 5.076923076923077) internal successors, (132), 26 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:11,982 INFO L276 IsEmpty]: Start isEmpty. Operand 3988 states and 11178 transitions. [2021-06-05 08:01:11,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-06-05 08:01:11,985 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:11,985 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:12,202 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209,205 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:12,202 INFO L430 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:12,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:12,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1444035745, now seen corresponding path program 202 times [2021-06-05 08:01:12,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:12,203 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329854064] [2021-06-05 08:01:12,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:12,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:12,385 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:12,385 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:12,385 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329854064] [2021-06-05 08:01:12,385 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329854064] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:12,385 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200508039] [2021-06-05 08:01:12,385 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 206 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 206 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:12,464 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:01:12,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:12,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 08:01:12,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:12,599 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:12,599 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200508039] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:12,599 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:12,599 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-06-05 08:01:12,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973461446] [2021-06-05 08:01:12,599 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 08:01:12,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:12,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 08:01:12,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2021-06-05 08:01:12,600 INFO L87 Difference]: Start difference. First operand 3988 states and 11178 transitions. Second operand has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:13,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:13,358 INFO L93 Difference]: Finished difference Result 5056 states and 13517 transitions. [2021-06-05 08:01:13,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 08:01:13,359 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-06-05 08:01:13,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:13,364 INFO L225 Difference]: With dead ends: 5056 [2021-06-05 08:01:13,364 INFO L226 Difference]: Without dead ends: 4786 [2021-06-05 08:01:13,365 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1014 ImplicationChecksByTransitivity, 685.2ms TimeCoverageRelationStatistics Valid=1104, Invalid=2928, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 08:01:13,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4786 states. [2021-06-05 08:01:13,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4786 to 4063. [2021-06-05 08:01:13,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4063 states, 4062 states have (on average 2.807237813884786) internal successors, (11403), 4062 states have internal predecessors, (11403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:13,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4063 states to 4063 states and 11403 transitions. [2021-06-05 08:01:13,459 INFO L78 Accepts]: Start accepts. Automaton has 4063 states and 11403 transitions. Word has length 130 [2021-06-05 08:01:13,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:13,459 INFO L482 AbstractCegarLoop]: Abstraction has 4063 states and 11403 transitions. [2021-06-05 08:01:13,459 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:13,459 INFO L276 IsEmpty]: Start isEmpty. Operand 4063 states and 11403 transitions. [2021-06-05 08:01:13,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-06-05 08:01:13,464 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:13,465 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:13,681 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 206 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable210 [2021-06-05 08:01:13,681 INFO L430 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:13,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:13,682 INFO L82 PathProgramCache]: Analyzing trace with hash -271206543, now seen corresponding path program 203 times [2021-06-05 08:01:13,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:13,682 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157423152] [2021-06-05 08:01:13,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:13,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:13,875 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:13,875 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:13,875 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157423152] [2021-06-05 08:01:13,875 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157423152] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:13,875 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686600723] [2021-06-05 08:01:13,875 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 207 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 207 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:13,942 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-06-05 08:01:13,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:13,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 08:01:13,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:14,108 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:14,108 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686600723] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:14,109 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:14,109 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2021-06-05 08:01:14,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782158276] [2021-06-05 08:01:14,109 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-06-05 08:01:14,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:14,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-06-05 08:01:14,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2021-06-05 08:01:14,109 INFO L87 Difference]: Start difference. First operand 4063 states and 11403 transitions. Second operand has 26 states, 26 states have (on average 5.076923076923077) internal successors, (132), 26 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:15,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:15,104 INFO L93 Difference]: Finished difference Result 5141 states and 13807 transitions. [2021-06-05 08:01:15,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-05 08:01:15,105 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.076923076923077) internal successors, (132), 26 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-06-05 08:01:15,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:15,111 INFO L225 Difference]: With dead ends: 5141 [2021-06-05 08:01:15,111 INFO L226 Difference]: Without dead ends: 4871 [2021-06-05 08:01:15,111 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1144 ImplicationChecksByTransitivity, 922.7ms TimeCoverageRelationStatistics Valid=1235, Invalid=3321, Unknown=0, NotChecked=0, Total=4556 [2021-06-05 08:01:15,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4871 states. [2021-06-05 08:01:15,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4871 to 4138. [2021-06-05 08:01:15,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4138 states, 4137 states have (on average 2.8155668358714045) internal successors, (11648), 4137 states have internal predecessors, (11648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:15,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4138 states to 4138 states and 11648 transitions. [2021-06-05 08:01:15,167 INFO L78 Accepts]: Start accepts. Automaton has 4138 states and 11648 transitions. Word has length 130 [2021-06-05 08:01:15,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:15,168 INFO L482 AbstractCegarLoop]: Abstraction has 4138 states and 11648 transitions. [2021-06-05 08:01:15,168 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 5.076923076923077) internal successors, (132), 26 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:15,168 INFO L276 IsEmpty]: Start isEmpty. Operand 4138 states and 11648 transitions. [2021-06-05 08:01:15,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-06-05 08:01:15,171 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:15,171 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:15,393 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 207 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable211 [2021-06-05 08:01:15,393 INFO L430 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:15,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:15,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1303854145, now seen corresponding path program 204 times [2021-06-05 08:01:15,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:15,393 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549137904] [2021-06-05 08:01:15,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:15,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:15,593 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:15,593 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:15,593 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549137904] [2021-06-05 08:01:15,593 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549137904] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:15,593 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938730883] [2021-06-05 08:01:15,593 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 208 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 208 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:15,676 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-06-05 08:01:15,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:15,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 08:01:15,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:15,857 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:15,858 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938730883] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:15,858 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:15,858 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-06-05 08:01:15,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014658273] [2021-06-05 08:01:15,858 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 08:01:15,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:15,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 08:01:15,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2021-06-05 08:01:15,858 INFO L87 Difference]: Start difference. First operand 4138 states and 11648 transitions. Second operand has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:15,989 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 10 [2021-06-05 08:01:16,852 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 10 [2021-06-05 08:01:16,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:16,936 INFO L93 Difference]: Finished difference Result 5908 states and 15981 transitions. [2021-06-05 08:01:16,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 08:01:16,936 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-06-05 08:01:16,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:16,943 INFO L225 Difference]: With dead ends: 5908 [2021-06-05 08:01:16,943 INFO L226 Difference]: Without dead ends: 5638 [2021-06-05 08:01:16,943 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1109 ImplicationChecksByTransitivity, 952.6ms TimeCoverageRelationStatistics Valid=1238, Invalid=3052, Unknown=0, NotChecked=0, Total=4290 [2021-06-05 08:01:16,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5638 states. [2021-06-05 08:01:17,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5638 to 4318. [2021-06-05 08:01:17,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4318 states, 4317 states have (on average 2.8276580958999307) internal successors, (12207), 4317 states have internal predecessors, (12207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:17,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4318 states to 4318 states and 12207 transitions. [2021-06-05 08:01:17,041 INFO L78 Accepts]: Start accepts. Automaton has 4318 states and 12207 transitions. Word has length 130 [2021-06-05 08:01:17,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:17,041 INFO L482 AbstractCegarLoop]: Abstraction has 4318 states and 12207 transitions. [2021-06-05 08:01:17,041 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:17,042 INFO L276 IsEmpty]: Start isEmpty. Operand 4318 states and 12207 transitions. [2021-06-05 08:01:17,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-06-05 08:01:17,045 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:17,045 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:17,264 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 208 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable212 [2021-06-05 08:01:17,265 INFO L430 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:17,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:17,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1281510895, now seen corresponding path program 205 times [2021-06-05 08:01:17,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:17,265 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640711396] [2021-06-05 08:01:17,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:17,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:17,533 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:17,533 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:17,533 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640711396] [2021-06-05 08:01:17,533 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640711396] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:17,533 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727056017] [2021-06-05 08:01:17,533 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 209 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 209 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:17,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:17,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 08:01:17,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:17,786 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:17,786 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727056017] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:17,786 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:17,786 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2021-06-05 08:01:17,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121928246] [2021-06-05 08:01:17,786 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-06-05 08:01:17,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:17,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-06-05 08:01:17,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=509, Unknown=0, NotChecked=0, Total=650 [2021-06-05 08:01:17,787 INFO L87 Difference]: Start difference. First operand 4318 states and 12207 transitions. Second operand has 26 states, 26 states have (on average 5.076923076923077) internal successors, (132), 26 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:19,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:19,039 INFO L93 Difference]: Finished difference Result 5395 states and 14681 transitions. [2021-06-05 08:01:19,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 08:01:19,039 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.076923076923077) internal successors, (132), 26 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-06-05 08:01:19,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:19,045 INFO L225 Difference]: With dead ends: 5395 [2021-06-05 08:01:19,045 INFO L226 Difference]: Without dead ends: 4906 [2021-06-05 08:01:19,045 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1247 ImplicationChecksByTransitivity, 1153.0ms TimeCoverageRelationStatistics Valid=1379, Invalid=3451, Unknown=0, NotChecked=0, Total=4830 [2021-06-05 08:01:19,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4906 states. [2021-06-05 08:01:19,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4906 to 2913. [2021-06-05 08:01:19,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2913 states, 2912 states have (on average 2.739697802197802) internal successors, (7978), 2912 states have internal predecessors, (7978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:19,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2913 states to 2913 states and 7978 transitions. [2021-06-05 08:01:19,081 INFO L78 Accepts]: Start accepts. Automaton has 2913 states and 7978 transitions. Word has length 130 [2021-06-05 08:01:19,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:19,081 INFO L482 AbstractCegarLoop]: Abstraction has 2913 states and 7978 transitions. [2021-06-05 08:01:19,081 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 5.076923076923077) internal successors, (132), 26 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:19,081 INFO L276 IsEmpty]: Start isEmpty. Operand 2913 states and 7978 transitions. [2021-06-05 08:01:19,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-06-05 08:01:19,083 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:19,083 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:19,305 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 209 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable213 [2021-06-05 08:01:19,305 INFO L430 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:19,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:19,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1365615058, now seen corresponding path program 206 times [2021-06-05 08:01:19,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:19,305 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135308284] [2021-06-05 08:01:19,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:19,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:19,546 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:19,546 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:19,546 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135308284] [2021-06-05 08:01:19,546 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135308284] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:19,546 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100907908] [2021-06-05 08:01:19,546 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 210 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 210 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:19,632 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:01:19,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:19,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 08:01:19,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:20,071 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:20,071 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100907908] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:20,071 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:20,071 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2021-06-05 08:01:20,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271457264] [2021-06-05 08:01:20,072 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-06-05 08:01:20,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:20,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-06-05 08:01:20,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=549, Unknown=0, NotChecked=0, Total=702 [2021-06-05 08:01:20,072 INFO L87 Difference]: Start difference. First operand 2913 states and 7978 transitions. Second operand has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:20,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:20,573 INFO L93 Difference]: Finished difference Result 4331 states and 11017 transitions. [2021-06-05 08:01:20,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 08:01:20,573 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-06-05 08:01:20,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:20,578 INFO L225 Difference]: With dead ends: 4331 [2021-06-05 08:01:20,578 INFO L226 Difference]: Without dead ends: 4061 [2021-06-05 08:01:20,578 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 542.6ms TimeCoverageRelationStatistics Valid=722, Invalid=2034, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 08:01:20,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4061 states. [2021-06-05 08:01:20,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4061 to 2988. [2021-06-05 08:01:20,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2988 states, 2987 states have (on average 2.7462336792768665) internal successors, (8203), 2987 states have internal predecessors, (8203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:20,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2988 states to 2988 states and 8203 transitions. [2021-06-05 08:01:20,616 INFO L78 Accepts]: Start accepts. Automaton has 2988 states and 8203 transitions. Word has length 135 [2021-06-05 08:01:20,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:20,617 INFO L482 AbstractCegarLoop]: Abstraction has 2988 states and 8203 transitions. [2021-06-05 08:01:20,617 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:20,617 INFO L276 IsEmpty]: Start isEmpty. Operand 2988 states and 8203 transitions. [2021-06-05 08:01:20,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-06-05 08:01:20,619 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:20,619 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:20,829 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 210 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable214 [2021-06-05 08:01:20,829 INFO L430 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:20,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:20,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1066754, now seen corresponding path program 207 times [2021-06-05 08:01:20,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:20,829 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656921256] [2021-06-05 08:01:20,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:20,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:21,213 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:21,213 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:21,213 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656921256] [2021-06-05 08:01:21,213 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656921256] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:21,213 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266521794] [2021-06-05 08:01:21,213 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 211 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 211 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:21,295 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-06-05 08:01:21,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:21,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 08:01:21,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:21,544 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:21,545 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266521794] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:21,545 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:21,545 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2021-06-05 08:01:21,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948865375] [2021-06-05 08:01:21,545 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-06-05 08:01:21,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:21,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-06-05 08:01:21,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=609, Unknown=0, NotChecked=0, Total=756 [2021-06-05 08:01:21,545 INFO L87 Difference]: Start difference. First operand 2988 states and 8203 transitions. Second operand has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:22,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:22,134 INFO L93 Difference]: Finished difference Result 4851 states and 12132 transitions. [2021-06-05 08:01:22,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 08:01:22,135 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-06-05 08:01:22,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:22,140 INFO L225 Difference]: With dead ends: 4851 [2021-06-05 08:01:22,140 INFO L226 Difference]: Without dead ends: 4581 [2021-06-05 08:01:22,140 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 582 ImplicationChecksByTransitivity, 759.7ms TimeCoverageRelationStatistics Valid=780, Invalid=2300, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 08:01:22,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4581 states. [2021-06-05 08:01:22,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4581 to 3063. [2021-06-05 08:01:22,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3063 states, 3062 states have (on average 2.752449379490529) internal successors, (8428), 3062 states have internal predecessors, (8428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:22,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3063 states to 3063 states and 8428 transitions. [2021-06-05 08:01:22,181 INFO L78 Accepts]: Start accepts. Automaton has 3063 states and 8428 transitions. Word has length 135 [2021-06-05 08:01:22,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:22,182 INFO L482 AbstractCegarLoop]: Abstraction has 3063 states and 8428 transitions. [2021-06-05 08:01:22,182 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:22,182 INFO L276 IsEmpty]: Start isEmpty. Operand 3063 states and 8428 transitions. [2021-06-05 08:01:22,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-06-05 08:01:22,184 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:22,184 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:22,401 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215,211 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:22,401 INFO L430 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:22,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:22,401 INFO L82 PathProgramCache]: Analyzing trace with hash 2016668524, now seen corresponding path program 208 times [2021-06-05 08:01:22,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:22,401 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106356098] [2021-06-05 08:01:22,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:22,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:22,632 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:22,632 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:22,632 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106356098] [2021-06-05 08:01:22,632 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106356098] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:22,632 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136522006] [2021-06-05 08:01:22,632 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 212 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 212 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:22,724 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:01:22,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:22,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 08:01:22,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:23,002 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:23,003 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136522006] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:23,003 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:23,003 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2021-06-05 08:01:23,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272515376] [2021-06-05 08:01:23,003 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-06-05 08:01:23,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:23,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-06-05 08:01:23,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=565, Unknown=0, NotChecked=0, Total=702 [2021-06-05 08:01:23,003 INFO L87 Difference]: Start difference. First operand 3063 states and 8428 transitions. Second operand has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:23,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:23,615 INFO L93 Difference]: Finished difference Result 4881 states and 12267 transitions. [2021-06-05 08:01:23,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 08:01:23,615 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-06-05 08:01:23,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:23,620 INFO L225 Difference]: With dead ends: 4881 [2021-06-05 08:01:23,620 INFO L226 Difference]: Without dead ends: 4611 [2021-06-05 08:01:23,621 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 639 ImplicationChecksByTransitivity, 640.0ms TimeCoverageRelationStatistics Valid=776, Invalid=2304, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 08:01:23,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4611 states. [2021-06-05 08:01:23,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4611 to 3138. [2021-06-05 08:01:23,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3138 states, 3137 states have (on average 2.7583678673892256) internal successors, (8653), 3137 states have internal predecessors, (8653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:23,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3138 states to 3138 states and 8653 transitions. [2021-06-05 08:01:23,668 INFO L78 Accepts]: Start accepts. Automaton has 3138 states and 8653 transitions. Word has length 135 [2021-06-05 08:01:23,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:23,668 INFO L482 AbstractCegarLoop]: Abstraction has 3138 states and 8653 transitions. [2021-06-05 08:01:23,668 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:23,668 INFO L276 IsEmpty]: Start isEmpty. Operand 3138 states and 8653 transitions. [2021-06-05 08:01:23,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-06-05 08:01:23,670 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:23,670 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:23,871 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 212 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable216 [2021-06-05 08:01:23,871 INFO L430 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:23,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:23,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1118145084, now seen corresponding path program 209 times [2021-06-05 08:01:23,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:23,872 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440709067] [2021-06-05 08:01:23,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:23,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:24,118 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:24,118 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:24,118 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440709067] [2021-06-05 08:01:24,118 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440709067] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:24,118 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43680532] [2021-06-05 08:01:24,118 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 213 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 213 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:24,192 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-06-05 08:01:24,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:24,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 08:01:24,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:24,456 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:24,457 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43680532] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:24,457 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:24,457 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2021-06-05 08:01:24,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454448048] [2021-06-05 08:01:24,457 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-06-05 08:01:24,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:24,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-06-05 08:01:24,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=624, Unknown=0, NotChecked=0, Total=756 [2021-06-05 08:01:24,458 INFO L87 Difference]: Start difference. First operand 3138 states and 8653 transitions. Second operand has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:25,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:25,083 INFO L93 Difference]: Finished difference Result 4906 states and 12392 transitions. [2021-06-05 08:01:25,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 08:01:25,083 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-06-05 08:01:25,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:25,088 INFO L225 Difference]: With dead ends: 4906 [2021-06-05 08:01:25,088 INFO L226 Difference]: Without dead ends: 4636 [2021-06-05 08:01:25,089 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 656 ImplicationChecksByTransitivity, 665.1ms TimeCoverageRelationStatistics Valid=799, Invalid=2507, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 08:01:25,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4636 states. [2021-06-05 08:01:25,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4636 to 3213. [2021-06-05 08:01:25,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3213 states, 3212 states have (on average 2.7640099626401) internal successors, (8878), 3212 states have internal predecessors, (8878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:25,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3213 states to 3213 states and 8878 transitions. [2021-06-05 08:01:25,133 INFO L78 Accepts]: Start accepts. Automaton has 3213 states and 8878 transitions. Word has length 135 [2021-06-05 08:01:25,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:25,133 INFO L482 AbstractCegarLoop]: Abstraction has 3213 states and 8878 transitions. [2021-06-05 08:01:25,133 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:25,134 INFO L276 IsEmpty]: Start isEmpty. Operand 3213 states and 8878 transitions. [2021-06-05 08:01:25,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-06-05 08:01:25,136 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:25,136 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:25,353 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217,213 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:25,353 INFO L430 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:25,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:25,353 INFO L82 PathProgramCache]: Analyzing trace with hash -496808406, now seen corresponding path program 210 times [2021-06-05 08:01:25,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:25,353 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962230719] [2021-06-05 08:01:25,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:25,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:25,649 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:25,650 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:25,650 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962230719] [2021-06-05 08:01:25,650 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962230719] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:25,650 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91952588] [2021-06-05 08:01:25,650 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 214 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 214 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:25,727 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-06-05 08:01:25,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:25,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 08:01:25,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:25,899 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:25,899 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91952588] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:25,899 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:25,899 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2021-06-05 08:01:25,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638853519] [2021-06-05 08:01:25,913 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-06-05 08:01:25,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:25,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-06-05 08:01:25,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=577, Unknown=0, NotChecked=0, Total=702 [2021-06-05 08:01:25,913 INFO L87 Difference]: Start difference. First operand 3213 states and 8878 transitions. Second operand has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:26,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:26,490 INFO L93 Difference]: Finished difference Result 4931 states and 12517 transitions. [2021-06-05 08:01:26,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 08:01:26,490 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-06-05 08:01:26,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:26,495 INFO L225 Difference]: With dead ends: 4931 [2021-06-05 08:01:26,495 INFO L226 Difference]: Without dead ends: 4661 [2021-06-05 08:01:26,496 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 723 ImplicationChecksByTransitivity, 649.9ms TimeCoverageRelationStatistics Valid=809, Invalid=2497, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 08:01:26,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4661 states. [2021-06-05 08:01:26,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4661 to 3288. [2021-06-05 08:01:26,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3288 states, 3287 states have (on average 2.7693945847277153) internal successors, (9103), 3287 states have internal predecessors, (9103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:26,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3288 states to 3288 states and 9103 transitions. [2021-06-05 08:01:26,539 INFO L78 Accepts]: Start accepts. Automaton has 3288 states and 9103 transitions. Word has length 135 [2021-06-05 08:01:26,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:26,539 INFO L482 AbstractCegarLoop]: Abstraction has 3288 states and 9103 transitions. [2021-06-05 08:01:26,539 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:26,539 INFO L276 IsEmpty]: Start isEmpty. Operand 3288 states and 9103 transitions. [2021-06-05 08:01:26,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-06-05 08:01:26,542 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:26,542 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:26,758 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218,214 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:26,758 INFO L430 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:26,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:26,759 INFO L82 PathProgramCache]: Analyzing trace with hash -877252358, now seen corresponding path program 211 times [2021-06-05 08:01:26,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:26,759 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603312817] [2021-06-05 08:01:26,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:26,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:26,984 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:26,985 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:26,985 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603312817] [2021-06-05 08:01:26,985 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603312817] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:26,985 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39335058] [2021-06-05 08:01:26,985 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 215 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 215 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:27,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:27,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 08:01:27,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:27,240 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:27,241 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39335058] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:27,241 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:27,241 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2021-06-05 08:01:27,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154111179] [2021-06-05 08:01:27,241 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-06-05 08:01:27,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:27,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-06-05 08:01:27,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=635, Unknown=0, NotChecked=0, Total=756 [2021-06-05 08:01:27,241 INFO L87 Difference]: Start difference. First operand 3288 states and 9103 transitions. Second operand has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:27,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:27,953 INFO L93 Difference]: Finished difference Result 4956 states and 12642 transitions. [2021-06-05 08:01:27,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 08:01:27,954 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-06-05 08:01:27,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:27,958 INFO L225 Difference]: With dead ends: 4956 [2021-06-05 08:01:27,958 INFO L226 Difference]: Without dead ends: 4686 [2021-06-05 08:01:27,958 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 743 ImplicationChecksByTransitivity, 724.0ms TimeCoverageRelationStatistics Valid=834, Invalid=2706, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 08:01:27,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4686 states. [2021-06-05 08:01:27,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4686 to 3363. [2021-06-05 08:01:27,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3363 states, 3362 states have (on average 2.774538964901844) internal successors, (9328), 3362 states have internal predecessors, (9328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:27,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3363 states to 3363 states and 9328 transitions. [2021-06-05 08:01:27,999 INFO L78 Accepts]: Start accepts. Automaton has 3363 states and 9328 transitions. Word has length 135 [2021-06-05 08:01:27,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:27,999 INFO L482 AbstractCegarLoop]: Abstraction has 3363 states and 9328 transitions. [2021-06-05 08:01:27,999 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:27,999 INFO L276 IsEmpty]: Start isEmpty. Operand 3363 states and 9328 transitions. [2021-06-05 08:01:28,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-06-05 08:01:28,001 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:28,001 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:28,209 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219,215 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:28,209 INFO L430 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:28,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:28,209 INFO L82 PathProgramCache]: Analyzing trace with hash -252877208, now seen corresponding path program 212 times [2021-06-05 08:01:28,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:28,209 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30215273] [2021-06-05 08:01:28,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:28,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:28,498 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:28,498 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:28,498 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30215273] [2021-06-05 08:01:28,498 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30215273] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:28,498 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594917118] [2021-06-05 08:01:28,499 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 216 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 216 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:28,566 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:01:28,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:28,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 08:01:28,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:28,744 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:28,744 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594917118] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:28,744 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:28,744 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2021-06-05 08:01:28,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583866454] [2021-06-05 08:01:28,745 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-06-05 08:01:28,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:28,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-06-05 08:01:28,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=585, Unknown=0, NotChecked=0, Total=702 [2021-06-05 08:01:28,745 INFO L87 Difference]: Start difference. First operand 3363 states and 9328 transitions. Second operand has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:29,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:29,338 INFO L93 Difference]: Finished difference Result 4981 states and 12767 transitions. [2021-06-05 08:01:29,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 08:01:29,338 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-06-05 08:01:29,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:29,343 INFO L225 Difference]: With dead ends: 4981 [2021-06-05 08:01:29,343 INFO L226 Difference]: Without dead ends: 4711 [2021-06-05 08:01:29,343 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 815 ImplicationChecksByTransitivity, 645.7ms TimeCoverageRelationStatistics Valid=858, Invalid=2682, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 08:01:29,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4711 states. [2021-06-05 08:01:29,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4711 to 3438. [2021-06-05 08:01:29,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3438 states, 3437 states have (on average 2.779458830375327) internal successors, (9553), 3437 states have internal predecessors, (9553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:29,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3438 states to 3438 states and 9553 transitions. [2021-06-05 08:01:29,386 INFO L78 Accepts]: Start accepts. Automaton has 3438 states and 9553 transitions. Word has length 135 [2021-06-05 08:01:29,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:29,386 INFO L482 AbstractCegarLoop]: Abstraction has 3438 states and 9553 transitions. [2021-06-05 08:01:29,386 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:29,386 INFO L276 IsEmpty]: Start isEmpty. Operand 3438 states and 9553 transitions. [2021-06-05 08:01:29,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-06-05 08:01:29,389 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:29,389 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:29,589 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220,216 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:29,590 INFO L430 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:29,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:29,590 INFO L82 PathProgramCache]: Analyzing trace with hash 556174648, now seen corresponding path program 213 times [2021-06-05 08:01:29,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:29,590 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731503178] [2021-06-05 08:01:29,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:29,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:29,811 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:29,811 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:29,811 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731503178] [2021-06-05 08:01:29,811 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731503178] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:29,811 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894838437] [2021-06-05 08:01:29,811 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 217 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 217 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:29,879 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-06-05 08:01:29,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:29,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 40 conjunts are in the unsatisfiable core [2021-06-05 08:01:29,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:30,063 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:30,063 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894838437] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:30,063 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:30,063 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2021-06-05 08:01:30,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029840420] [2021-06-05 08:01:30,063 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-06-05 08:01:30,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:30,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-06-05 08:01:30,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=642, Unknown=0, NotChecked=0, Total=756 [2021-06-05 08:01:30,064 INFO L87 Difference]: Start difference. First operand 3438 states and 9553 transitions. Second operand has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:30,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:30,766 INFO L93 Difference]: Finished difference Result 5006 states and 12892 transitions. [2021-06-05 08:01:30,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 08:01:30,766 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-06-05 08:01:30,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:30,772 INFO L225 Difference]: With dead ends: 5006 [2021-06-05 08:01:30,772 INFO L226 Difference]: Without dead ends: 4736 [2021-06-05 08:01:30,772 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 708.5ms TimeCoverageRelationStatistics Valid=864, Invalid=2918, Unknown=0, NotChecked=0, Total=3782 [2021-06-05 08:01:30,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4736 states. [2021-06-05 08:01:30,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4736 to 3513. [2021-06-05 08:01:30,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3513 states, 3512 states have (on average 2.7841685649202734) internal successors, (9778), 3512 states have internal predecessors, (9778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:30,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3513 states to 3513 states and 9778 transitions. [2021-06-05 08:01:30,815 INFO L78 Accepts]: Start accepts. Automaton has 3513 states and 9778 transitions. Word has length 135 [2021-06-05 08:01:30,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:30,815 INFO L482 AbstractCegarLoop]: Abstraction has 3513 states and 9778 transitions. [2021-06-05 08:01:30,815 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:30,815 INFO L276 IsEmpty]: Start isEmpty. Operand 3513 states and 9778 transitions. [2021-06-05 08:01:30,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-06-05 08:01:30,818 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:30,818 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:31,019 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 217 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable221 [2021-06-05 08:01:31,019 INFO L430 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:31,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:31,019 INFO L82 PathProgramCache]: Analyzing trace with hash -835775450, now seen corresponding path program 214 times [2021-06-05 08:01:31,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:31,019 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679407944] [2021-06-05 08:01:31,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:31,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:31,240 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:31,240 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:31,240 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679407944] [2021-06-05 08:01:31,240 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679407944] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:31,240 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303954120] [2021-06-05 08:01:31,240 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 218 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 218 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:31,301 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:01:31,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:31,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 08:01:31,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:31,466 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:31,466 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303954120] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:31,466 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:31,466 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2021-06-05 08:01:31,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628627544] [2021-06-05 08:01:31,467 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-06-05 08:01:31,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:31,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-06-05 08:01:31,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=589, Unknown=0, NotChecked=0, Total=702 [2021-06-05 08:01:31,467 INFO L87 Difference]: Start difference. First operand 3513 states and 9778 transitions. Second operand has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:32,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:32,095 INFO L93 Difference]: Finished difference Result 5031 states and 13017 transitions. [2021-06-05 08:01:32,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 08:01:32,096 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-06-05 08:01:32,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:32,101 INFO L225 Difference]: With dead ends: 5031 [2021-06-05 08:01:32,101 INFO L226 Difference]: Without dead ends: 4761 [2021-06-05 08:01:32,102 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 911 ImplicationChecksByTransitivity, 635.3ms TimeCoverageRelationStatistics Valid=923, Invalid=2859, Unknown=0, NotChecked=0, Total=3782 [2021-06-05 08:01:32,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4761 states. [2021-06-05 08:01:32,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4761 to 3588. [2021-06-05 08:01:32,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3588 states, 3587 states have (on average 2.788681349316978) internal successors, (10003), 3587 states have internal predecessors, (10003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:32,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3588 states to 3588 states and 10003 transitions. [2021-06-05 08:01:32,149 INFO L78 Accepts]: Start accepts. Automaton has 3588 states and 10003 transitions. Word has length 135 [2021-06-05 08:01:32,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:32,149 INFO L482 AbstractCegarLoop]: Abstraction has 3588 states and 10003 transitions. [2021-06-05 08:01:32,149 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:32,149 INFO L276 IsEmpty]: Start isEmpty. Operand 3588 states and 10003 transitions. [2021-06-05 08:01:32,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-06-05 08:01:32,152 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:32,152 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:32,353 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 218 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable222 [2021-06-05 08:01:32,353 INFO L430 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:32,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:32,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1080852746, now seen corresponding path program 215 times [2021-06-05 08:01:32,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:32,353 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049705966] [2021-06-05 08:01:32,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:32,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:32,574 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:32,575 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:32,575 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049705966] [2021-06-05 08:01:32,575 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049705966] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:32,575 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046328069] [2021-06-05 08:01:32,575 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 219 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 219 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:32,636 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-06-05 08:01:32,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:32,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 08:01:32,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:32,815 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:32,816 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046328069] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:32,816 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:32,816 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2021-06-05 08:01:32,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638320961] [2021-06-05 08:01:32,816 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-06-05 08:01:32,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:32,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-06-05 08:01:32,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=645, Unknown=0, NotChecked=0, Total=756 [2021-06-05 08:01:32,816 INFO L87 Difference]: Start difference. First operand 3588 states and 10003 transitions. Second operand has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:33,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:33,652 INFO L93 Difference]: Finished difference Result 5056 states and 13142 transitions. [2021-06-05 08:01:33,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 08:01:33,652 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-06-05 08:01:33,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:33,657 INFO L225 Difference]: With dead ends: 5056 [2021-06-05 08:01:33,657 INFO L226 Difference]: Without dead ends: 4786 [2021-06-05 08:01:33,658 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 937 ImplicationChecksByTransitivity, 831.8ms TimeCoverageRelationStatistics Valid=952, Invalid=3080, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 08:01:33,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4786 states. [2021-06-05 08:01:33,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4786 to 3663. [2021-06-05 08:01:33,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3663 states, 3662 states have (on average 2.793009284543965) internal successors, (10228), 3662 states have internal predecessors, (10228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:33,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3663 states to 3663 states and 10228 transitions. [2021-06-05 08:01:33,701 INFO L78 Accepts]: Start accepts. Automaton has 3663 states and 10228 transitions. Word has length 135 [2021-06-05 08:01:33,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:33,701 INFO L482 AbstractCegarLoop]: Abstraction has 3663 states and 10228 transitions. [2021-06-05 08:01:33,701 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:33,701 INFO L276 IsEmpty]: Start isEmpty. Operand 3663 states and 10228 transitions. [2021-06-05 08:01:33,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-06-05 08:01:33,704 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:33,704 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:33,908 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 219 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable223 [2021-06-05 08:01:33,909 INFO L430 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:33,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:33,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1457703068, now seen corresponding path program 216 times [2021-06-05 08:01:33,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:33,909 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533434777] [2021-06-05 08:01:33,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:33,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:34,119 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:34,119 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:34,119 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533434777] [2021-06-05 08:01:34,120 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533434777] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:34,120 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628479289] [2021-06-05 08:01:34,120 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 220 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 220 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:34,205 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-06-05 08:01:34,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:34,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 08:01:34,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:34,390 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:34,390 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628479289] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:34,390 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:34,390 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2021-06-05 08:01:34,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073464095] [2021-06-05 08:01:34,391 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-06-05 08:01:34,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:34,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-06-05 08:01:34,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=589, Unknown=0, NotChecked=0, Total=702 [2021-06-05 08:01:34,391 INFO L87 Difference]: Start difference. First operand 3663 states and 10228 transitions. Second operand has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:35,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:35,102 INFO L93 Difference]: Finished difference Result 5081 states and 13267 transitions. [2021-06-05 08:01:35,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 08:01:35,103 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-06-05 08:01:35,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:35,109 INFO L225 Difference]: With dead ends: 5081 [2021-06-05 08:01:35,109 INFO L226 Difference]: Without dead ends: 4811 [2021-06-05 08:01:35,110 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1011 ImplicationChecksByTransitivity, 703.9ms TimeCoverageRelationStatistics Valid=1004, Invalid=3028, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 08:01:35,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4811 states. [2021-06-05 08:01:35,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4811 to 3738. [2021-06-05 08:01:35,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3738 states, 3737 states have (on average 2.7971635001337973) internal successors, (10453), 3737 states have internal predecessors, (10453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:35,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3738 states to 3738 states and 10453 transitions. [2021-06-05 08:01:35,168 INFO L78 Accepts]: Start accepts. Automaton has 3738 states and 10453 transitions. Word has length 135 [2021-06-05 08:01:35,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:35,168 INFO L482 AbstractCegarLoop]: Abstraction has 3738 states and 10453 transitions. [2021-06-05 08:01:35,168 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:35,168 INFO L276 IsEmpty]: Start isEmpty. Operand 3738 states and 10453 transitions. [2021-06-05 08:01:35,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-06-05 08:01:35,172 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:35,172 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:35,372 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 220 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable224 [2021-06-05 08:01:35,373 INFO L430 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:35,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:35,373 INFO L82 PathProgramCache]: Analyzing trace with hash -130947532, now seen corresponding path program 217 times [2021-06-05 08:01:35,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:35,373 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710033541] [2021-06-05 08:01:35,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:35,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:35,614 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:35,614 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:35,614 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710033541] [2021-06-05 08:01:35,614 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710033541] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:35,614 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948724253] [2021-06-05 08:01:35,614 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 221 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 221 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:35,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:35,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 08:01:35,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:35,871 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:35,871 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948724253] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:35,871 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:35,871 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2021-06-05 08:01:35,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447935419] [2021-06-05 08:01:35,871 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-06-05 08:01:35,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:35,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-06-05 08:01:35,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=644, Unknown=0, NotChecked=0, Total=756 [2021-06-05 08:01:35,872 INFO L87 Difference]: Start difference. First operand 3738 states and 10453 transitions. Second operand has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:36,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:36,757 INFO L93 Difference]: Finished difference Result 5106 states and 13392 transitions. [2021-06-05 08:01:36,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 08:01:36,758 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-06-05 08:01:36,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:36,763 INFO L225 Difference]: With dead ends: 5106 [2021-06-05 08:01:36,763 INFO L226 Difference]: Without dead ends: 4836 [2021-06-05 08:01:36,764 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1040 ImplicationChecksByTransitivity, 856.6ms TimeCoverageRelationStatistics Valid=1035, Invalid=3255, Unknown=0, NotChecked=0, Total=4290 [2021-06-05 08:01:36,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4836 states. [2021-06-05 08:01:36,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4836 to 3813. [2021-06-05 08:01:36,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3813 states, 3812 states have (on average 2.8011542497376705) internal successors, (10678), 3812 states have internal predecessors, (10678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:36,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3813 states to 3813 states and 10678 transitions. [2021-06-05 08:01:36,815 INFO L78 Accepts]: Start accepts. Automaton has 3813 states and 10678 transitions. Word has length 135 [2021-06-05 08:01:36,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:36,815 INFO L482 AbstractCegarLoop]: Abstraction has 3813 states and 10678 transitions. [2021-06-05 08:01:36,815 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:36,816 INFO L276 IsEmpty]: Start isEmpty. Operand 3813 states and 10678 transitions. [2021-06-05 08:01:36,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-06-05 08:01:36,819 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:36,819 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:37,019 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225,221 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:37,020 INFO L430 AbstractCegarLoop]: === Iteration 227 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:37,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:37,020 INFO L82 PathProgramCache]: Analyzing trace with hash 323268642, now seen corresponding path program 218 times [2021-06-05 08:01:37,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:37,020 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428129788] [2021-06-05 08:01:37,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:37,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:37,240 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:37,240 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:37,240 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428129788] [2021-06-05 08:01:37,240 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428129788] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:37,240 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712873742] [2021-06-05 08:01:37,240 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 222 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 222 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:37,328 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:01:37,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:37,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 08:01:37,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:37,491 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:37,492 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712873742] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:37,492 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:37,492 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2021-06-05 08:01:37,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110752224] [2021-06-05 08:01:37,492 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-06-05 08:01:37,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:37,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-06-05 08:01:37,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=585, Unknown=0, NotChecked=0, Total=702 [2021-06-05 08:01:37,492 INFO L87 Difference]: Start difference. First operand 3813 states and 10678 transitions. Second operand has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:38,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:38,228 INFO L93 Difference]: Finished difference Result 5131 states and 13517 transitions. [2021-06-05 08:01:38,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 08:01:38,228 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-06-05 08:01:38,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:38,235 INFO L225 Difference]: With dead ends: 5131 [2021-06-05 08:01:38,235 INFO L226 Difference]: Without dead ends: 4861 [2021-06-05 08:01:38,236 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1115 ImplicationChecksByTransitivity, 742.3ms TimeCoverageRelationStatistics Valid=1101, Invalid=3189, Unknown=0, NotChecked=0, Total=4290 [2021-06-05 08:01:38,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4861 states. [2021-06-05 08:01:38,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4861 to 3888. [2021-06-05 08:01:38,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3888 states, 3887 states have (on average 2.804990995626447) internal successors, (10903), 3887 states have internal predecessors, (10903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:38,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3888 states to 3888 states and 10903 transitions. [2021-06-05 08:01:38,290 INFO L78 Accepts]: Start accepts. Automaton has 3888 states and 10903 transitions. Word has length 135 [2021-06-05 08:01:38,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:38,291 INFO L482 AbstractCegarLoop]: Abstraction has 3888 states and 10903 transitions. [2021-06-05 08:01:38,291 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:38,291 INFO L276 IsEmpty]: Start isEmpty. Operand 3888 states and 10903 transitions. [2021-06-05 08:01:38,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-06-05 08:01:38,294 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:38,294 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:38,494 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 222 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable226 [2021-06-05 08:01:38,494 INFO L430 AbstractCegarLoop]: === Iteration 228 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:38,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:38,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1322164978, now seen corresponding path program 219 times [2021-06-05 08:01:38,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:38,495 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165309518] [2021-06-05 08:01:38,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:38,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:38,717 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:38,717 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:38,717 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165309518] [2021-06-05 08:01:38,717 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165309518] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:38,717 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576064234] [2021-06-05 08:01:38,717 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 223 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 223 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:38,788 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-06-05 08:01:38,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:38,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 08:01:38,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:38,964 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:38,965 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576064234] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:38,965 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:38,965 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2021-06-05 08:01:38,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130544049] [2021-06-05 08:01:38,965 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-06-05 08:01:38,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:38,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-06-05 08:01:38,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=639, Unknown=0, NotChecked=0, Total=756 [2021-06-05 08:01:38,965 INFO L87 Difference]: Start difference. First operand 3888 states and 10903 transitions. Second operand has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:39,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:39,955 INFO L93 Difference]: Finished difference Result 5156 states and 13642 transitions. [2021-06-05 08:01:39,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 08:01:39,955 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-06-05 08:01:39,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:39,960 INFO L225 Difference]: With dead ends: 5156 [2021-06-05 08:01:39,961 INFO L226 Difference]: Without dead ends: 4886 [2021-06-05 08:01:39,961 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1110 ImplicationChecksByTransitivity, 885.1ms TimeCoverageRelationStatistics Valid=1068, Invalid=3488, Unknown=0, NotChecked=0, Total=4556 [2021-06-05 08:01:39,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4886 states. [2021-06-05 08:01:40,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4886 to 3963. [2021-06-05 08:01:40,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3963 states, 3962 states have (on average 2.8086824835941444) internal successors, (11128), 3962 states have internal predecessors, (11128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:40,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3963 states to 3963 states and 11128 transitions. [2021-06-05 08:01:40,045 INFO L78 Accepts]: Start accepts. Automaton has 3963 states and 11128 transitions. Word has length 135 [2021-06-05 08:01:40,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:40,045 INFO L482 AbstractCegarLoop]: Abstraction has 3963 states and 11128 transitions. [2021-06-05 08:01:40,045 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:40,045 INFO L276 IsEmpty]: Start isEmpty. Operand 3963 states and 11128 transitions. [2021-06-05 08:01:40,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-06-05 08:01:40,048 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:40,048 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:40,263 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227,223 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:40,264 INFO L430 AbstractCegarLoop]: === Iteration 229 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:40,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:40,264 INFO L82 PathProgramCache]: Analyzing trace with hash -557162912, now seen corresponding path program 220 times [2021-06-05 08:01:40,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:40,264 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31666183] [2021-06-05 08:01:40,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:40,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:40,454 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:40,454 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:40,454 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31666183] [2021-06-05 08:01:40,454 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31666183] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:40,454 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448672222] [2021-06-05 08:01:40,454 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 224 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 224 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:40,520 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:01:40,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:40,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 08:01:40,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:40,675 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:40,676 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448672222] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:40,676 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:40,676 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2021-06-05 08:01:40,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96026014] [2021-06-05 08:01:40,676 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-06-05 08:01:40,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:40,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-06-05 08:01:40,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=577, Unknown=0, NotChecked=0, Total=702 [2021-06-05 08:01:40,676 INFO L87 Difference]: Start difference. First operand 3963 states and 11128 transitions. Second operand has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:41,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:41,427 INFO L93 Difference]: Finished difference Result 5181 states and 13767 transitions. [2021-06-05 08:01:41,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 08:01:41,427 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-06-05 08:01:41,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:41,432 INFO L225 Difference]: With dead ends: 5181 [2021-06-05 08:01:41,432 INFO L226 Difference]: Without dead ends: 4911 [2021-06-05 08:01:41,433 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1223 ImplicationChecksByTransitivity, 740.7ms TimeCoverageRelationStatistics Valid=1214, Invalid=3342, Unknown=0, NotChecked=0, Total=4556 [2021-06-05 08:01:41,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4911 states. [2021-06-05 08:01:41,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4911 to 4038. [2021-06-05 08:01:41,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4038 states, 4037 states have (on average 2.812236809512014) internal successors, (11353), 4037 states have internal predecessors, (11353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:41,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4038 states to 4038 states and 11353 transitions. [2021-06-05 08:01:41,483 INFO L78 Accepts]: Start accepts. Automaton has 4038 states and 11353 transitions. Word has length 135 [2021-06-05 08:01:41,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:41,483 INFO L482 AbstractCegarLoop]: Abstraction has 4038 states and 11353 transitions. [2021-06-05 08:01:41,483 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:41,483 INFO L276 IsEmpty]: Start isEmpty. Operand 4038 states and 11353 transitions. [2021-06-05 08:01:41,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-06-05 08:01:41,487 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:41,487 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:41,687 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 224 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable228 [2021-06-05 08:01:41,687 INFO L430 AbstractCegarLoop]: === Iteration 230 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:41,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:41,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1473156400, now seen corresponding path program 221 times [2021-06-05 08:01:41,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:41,688 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160171586] [2021-06-05 08:01:41,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:41,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:41,890 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:41,890 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:41,890 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160171586] [2021-06-05 08:01:41,890 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160171586] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:41,891 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97163779] [2021-06-05 08:01:41,891 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 225 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 225 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:41,958 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-06-05 08:01:41,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:41,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 08:01:41,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:42,143 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:42,143 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97163779] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:42,143 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:42,143 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2021-06-05 08:01:42,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888276640] [2021-06-05 08:01:42,143 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-06-05 08:01:42,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:42,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-06-05 08:01:42,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=630, Unknown=0, NotChecked=0, Total=756 [2021-06-05 08:01:42,144 INFO L87 Difference]: Start difference. First operand 4038 states and 11353 transitions. Second operand has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:43,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:43,009 INFO L93 Difference]: Finished difference Result 5206 states and 13892 transitions. [2021-06-05 08:01:43,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-05 08:01:43,010 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-06-05 08:01:43,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:43,015 INFO L225 Difference]: With dead ends: 5206 [2021-06-05 08:01:43,015 INFO L226 Difference]: Without dead ends: 4936 [2021-06-05 08:01:43,015 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1258 ImplicationChecksByTransitivity, 855.6ms TimeCoverageRelationStatistics Valid=1249, Invalid=3581, Unknown=0, NotChecked=0, Total=4830 [2021-06-05 08:01:43,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4936 states. [2021-06-05 08:01:43,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4936 to 4113. [2021-06-05 08:01:43,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4113 states, 4112 states have (on average 2.815661478599222) internal successors, (11578), 4112 states have internal predecessors, (11578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:43,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4113 states to 4113 states and 11578 transitions. [2021-06-05 08:01:43,065 INFO L78 Accepts]: Start accepts. Automaton has 4113 states and 11578 transitions. Word has length 135 [2021-06-05 08:01:43,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:43,065 INFO L482 AbstractCegarLoop]: Abstraction has 4113 states and 11578 transitions. [2021-06-05 08:01:43,065 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:43,066 INFO L276 IsEmpty]: Start isEmpty. Operand 4113 states and 11578 transitions. [2021-06-05 08:01:43,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-06-05 08:01:43,069 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:43,069 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:43,269 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229,225 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:43,270 INFO L430 AbstractCegarLoop]: === Iteration 231 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:43,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:43,270 INFO L82 PathProgramCache]: Analyzing trace with hash 2087395870, now seen corresponding path program 222 times [2021-06-05 08:01:43,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:43,270 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734716791] [2021-06-05 08:01:43,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:43,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:43,473 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:43,473 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:43,473 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734716791] [2021-06-05 08:01:43,473 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734716791] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:43,473 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793910494] [2021-06-05 08:01:43,473 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 226 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 226 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:43,547 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-06-05 08:01:43,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:43,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 08:01:43,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:43,760 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:43,760 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793910494] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:43,760 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:43,760 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2021-06-05 08:01:43,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132460383] [2021-06-05 08:01:43,761 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-06-05 08:01:43,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:43,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-06-05 08:01:43,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=565, Unknown=0, NotChecked=0, Total=702 [2021-06-05 08:01:43,761 INFO L87 Difference]: Start difference. First operand 4113 states and 11578 transitions. Second operand has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:44,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:44,554 INFO L93 Difference]: Finished difference Result 5231 states and 14017 transitions. [2021-06-05 08:01:44,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 08:01:44,554 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-06-05 08:01:44,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:44,560 INFO L225 Difference]: With dead ends: 5231 [2021-06-05 08:01:44,561 INFO L226 Difference]: Without dead ends: 4961 [2021-06-05 08:01:44,561 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1335 ImplicationChecksByTransitivity, 737.0ms TimeCoverageRelationStatistics Valid=1343, Invalid=3487, Unknown=0, NotChecked=0, Total=4830 [2021-06-05 08:01:44,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4961 states. [2021-06-05 08:01:44,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4961 to 4188. [2021-06-05 08:01:44,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4188 states, 4187 states have (on average 2.818963458323382) internal successors, (11803), 4187 states have internal predecessors, (11803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:44,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4188 states to 4188 states and 11803 transitions. [2021-06-05 08:01:44,634 INFO L78 Accepts]: Start accepts. Automaton has 4188 states and 11803 transitions. Word has length 135 [2021-06-05 08:01:44,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:44,634 INFO L482 AbstractCegarLoop]: Abstraction has 4188 states and 11803 transitions. [2021-06-05 08:01:44,634 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:44,634 INFO L276 IsEmpty]: Start isEmpty. Operand 4188 states and 11803 transitions. [2021-06-05 08:01:44,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-06-05 08:01:44,638 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:44,638 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:44,855 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230,226 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:44,855 INFO L430 AbstractCegarLoop]: === Iteration 232 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:44,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:44,855 INFO L82 PathProgramCache]: Analyzing trace with hash 372153582, now seen corresponding path program 223 times [2021-06-05 08:01:44,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:44,856 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385002930] [2021-06-05 08:01:44,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:44,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:45,047 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:45,047 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:45,047 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385002930] [2021-06-05 08:01:45,048 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385002930] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:45,048 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346066293] [2021-06-05 08:01:45,048 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 227 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 227 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:45,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:45,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 08:01:45,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:45,314 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:45,314 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346066293] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:45,314 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:45,314 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2021-06-05 08:01:45,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400781230] [2021-06-05 08:01:45,314 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-06-05 08:01:45,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:45,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-06-05 08:01:45,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756 [2021-06-05 08:01:45,315 INFO L87 Difference]: Start difference. First operand 4188 states and 11803 transitions. Second operand has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:46,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:46,455 INFO L93 Difference]: Finished difference Result 5316 states and 14307 transitions. [2021-06-05 08:01:46,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 08:01:46,456 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-06-05 08:01:46,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:46,462 INFO L225 Difference]: With dead ends: 5316 [2021-06-05 08:01:46,463 INFO L226 Difference]: Without dead ends: 5046 [2021-06-05 08:01:46,463 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1373 ImplicationChecksByTransitivity, 1071.9ms TimeCoverageRelationStatistics Valid=1380, Invalid=3732, Unknown=0, NotChecked=0, Total=5112 [2021-06-05 08:01:46,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5046 states. [2021-06-05 08:01:46,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5046 to 4263. [2021-06-05 08:01:46,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4263 states, 4262 states have (on average 2.8268418582824966) internal successors, (12048), 4262 states have internal predecessors, (12048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:46,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4263 states to 4263 states and 12048 transitions. [2021-06-05 08:01:46,524 INFO L78 Accepts]: Start accepts. Automaton has 4263 states and 12048 transitions. Word has length 135 [2021-06-05 08:01:46,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:46,525 INFO L482 AbstractCegarLoop]: Abstraction has 4263 states and 12048 transitions. [2021-06-05 08:01:46,525 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:46,525 INFO L276 IsEmpty]: Start isEmpty. Operand 4263 states and 12048 transitions. [2021-06-05 08:01:46,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-06-05 08:01:46,529 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:46,529 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:46,745 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231,227 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:46,745 INFO L430 AbstractCegarLoop]: === Iteration 233 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:46,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:46,746 INFO L82 PathProgramCache]: Analyzing trace with hash -660494020, now seen corresponding path program 224 times [2021-06-05 08:01:46,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:46,746 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187857463] [2021-06-05 08:01:46,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:46,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:46,938 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:46,938 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:46,938 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187857463] [2021-06-05 08:01:46,938 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187857463] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:46,938 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065950656] [2021-06-05 08:01:46,938 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 228 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 228 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:47,010 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:01:47,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:47,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 08:01:47,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:47,176 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:47,176 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065950656] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:47,176 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:47,176 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2021-06-05 08:01:47,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827116556] [2021-06-05 08:01:47,176 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-06-05 08:01:47,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:47,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-06-05 08:01:47,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=549, Unknown=0, NotChecked=0, Total=702 [2021-06-05 08:01:47,177 INFO L87 Difference]: Start difference. First operand 4263 states and 12048 transitions. Second operand has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:48,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:48,097 INFO L93 Difference]: Finished difference Result 6058 states and 16431 transitions. [2021-06-05 08:01:48,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 08:01:48,097 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-06-05 08:01:48,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:48,104 INFO L225 Difference]: With dead ends: 6058 [2021-06-05 08:01:48,104 INFO L226 Difference]: Without dead ends: 5788 [2021-06-05 08:01:48,105 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1450 ImplicationChecksByTransitivity, 872.6ms TimeCoverageRelationStatistics Valid=1489, Invalid=3623, Unknown=0, NotChecked=0, Total=5112 [2021-06-05 08:01:48,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5788 states. [2021-06-05 08:01:48,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5788 to 4443. [2021-06-05 08:01:48,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4443 states, 4442 states have (on average 2.8381359747861326) internal successors, (12607), 4442 states have internal predecessors, (12607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:48,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4443 states to 4443 states and 12607 transitions. [2021-06-05 08:01:48,165 INFO L78 Accepts]: Start accepts. Automaton has 4443 states and 12607 transitions. Word has length 135 [2021-06-05 08:01:48,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:48,165 INFO L482 AbstractCegarLoop]: Abstraction has 4443 states and 12607 transitions. [2021-06-05 08:01:48,165 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:48,165 INFO L276 IsEmpty]: Start isEmpty. Operand 4443 states and 12607 transitions. [2021-06-05 08:01:48,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-06-05 08:01:48,169 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:48,170 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:48,384 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232,228 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:48,384 INFO L430 AbstractCegarLoop]: === Iteration 234 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:48,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:48,384 INFO L82 PathProgramCache]: Analyzing trace with hash -638150770, now seen corresponding path program 225 times [2021-06-05 08:01:48,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:48,385 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618082782] [2021-06-05 08:01:48,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:48,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:48,585 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:48,585 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:48,585 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618082782] [2021-06-05 08:01:48,585 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618082782] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:48,585 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811062576] [2021-06-05 08:01:48,585 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 229 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 229 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:48,682 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-06-05 08:01:48,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:48,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 08:01:48,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:48,847 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:48,847 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811062576] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:48,847 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:48,847 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2021-06-05 08:01:48,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346635530] [2021-06-05 08:01:48,848 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-06-05 08:01:48,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:48,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-06-05 08:01:48,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=600, Unknown=0, NotChecked=0, Total=756 [2021-06-05 08:01:48,848 INFO L87 Difference]: Start difference. First operand 4443 states and 12607 transitions. Second operand has 28 states, 28 states have (on average 4.928571428571429) internal successors, (138), 28 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:49,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:49,908 INFO L93 Difference]: Finished difference Result 5926 states and 16096 transitions. [2021-06-05 08:01:49,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 08:01:49,908 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.928571428571429) internal successors, (138), 28 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-06-05 08:01:49,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:49,914 INFO L225 Difference]: With dead ends: 5926 [2021-06-05 08:01:49,914 INFO L226 Difference]: Without dead ends: 5351 [2021-06-05 08:01:49,915 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1569 ImplicationChecksByTransitivity, 1000.3ms TimeCoverageRelationStatistics Valid=1436, Invalid=4416, Unknown=0, NotChecked=0, Total=5852 [2021-06-05 08:01:49,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5351 states. [2021-06-05 08:01:49,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5351 to 4478. [2021-06-05 08:01:49,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4478 states, 4477 states have (on average 2.832923832923833) internal successors, (12683), 4477 states have internal predecessors, (12683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:49,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4478 states to 4478 states and 12683 transitions. [2021-06-05 08:01:49,967 INFO L78 Accepts]: Start accepts. Automaton has 4478 states and 12683 transitions. Word has length 135 [2021-06-05 08:01:49,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:49,967 INFO L482 AbstractCegarLoop]: Abstraction has 4478 states and 12683 transitions. [2021-06-05 08:01:49,967 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.928571428571429) internal successors, (138), 28 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:49,967 INFO L276 IsEmpty]: Start isEmpty. Operand 4478 states and 12683 transitions. [2021-06-05 08:01:49,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-06-05 08:01:49,971 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:49,971 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:50,186 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 229 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable233 [2021-06-05 08:01:50,186 INFO L430 AbstractCegarLoop]: === Iteration 235 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:50,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:50,186 INFO L82 PathProgramCache]: Analyzing trace with hash 2057178814, now seen corresponding path program 226 times [2021-06-05 08:01:50,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:50,186 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247760529] [2021-06-05 08:01:50,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:50,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:50,458 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:50,458 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:50,458 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247760529] [2021-06-05 08:01:50,458 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247760529] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:50,459 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311148596] [2021-06-05 08:01:50,459 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 230 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 230 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:50,548 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:01:50,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:50,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 08:01:50,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:50,757 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:50,757 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311148596] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:50,757 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:50,757 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 31 [2021-06-05 08:01:50,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601535249] [2021-06-05 08:01:50,757 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 08:01:50,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:50,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 08:01:50,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=722, Unknown=0, NotChecked=0, Total=930 [2021-06-05 08:01:50,758 INFO L87 Difference]: Start difference. First operand 4478 states and 12683 transitions. Second operand has 31 states, 31 states have (on average 5.483870967741935) internal successors, (170), 31 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:51,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:51,349 INFO L93 Difference]: Finished difference Result 5668 states and 15383 transitions. [2021-06-05 08:01:51,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 08:01:51,349 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.483870967741935) internal successors, (170), 31 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-06-05 08:01:51,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:51,355 INFO L225 Difference]: With dead ends: 5668 [2021-06-05 08:01:51,355 INFO L226 Difference]: Without dead ends: 5334 [2021-06-05 08:01:51,356 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 692 ImplicationChecksByTransitivity, 708.7ms TimeCoverageRelationStatistics Valid=926, Invalid=2496, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 08:01:51,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5334 states. [2021-06-05 08:01:51,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5334 to 4563. [2021-06-05 08:01:51,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4563 states, 4562 states have (on average 2.817404647084612) internal successors, (12853), 4562 states have internal predecessors, (12853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:51,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4563 states to 4563 states and 12853 transitions. [2021-06-05 08:01:51,411 INFO L78 Accepts]: Start accepts. Automaton has 4563 states and 12853 transitions. Word has length 140 [2021-06-05 08:01:51,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:51,423 INFO L482 AbstractCegarLoop]: Abstraction has 4563 states and 12853 transitions. [2021-06-05 08:01:51,423 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.483870967741935) internal successors, (170), 31 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:51,423 INFO L276 IsEmpty]: Start isEmpty. Operand 4563 states and 12853 transitions. [2021-06-05 08:01:51,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-06-05 08:01:51,427 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:51,427 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:51,644 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 230 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable234 [2021-06-05 08:01:51,644 INFO L430 AbstractCegarLoop]: === Iteration 236 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:51,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:51,644 INFO L82 PathProgramCache]: Analyzing trace with hash -416801150, now seen corresponding path program 227 times [2021-06-05 08:01:51,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:51,644 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635448369] [2021-06-05 08:01:51,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:51,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:51,940 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:51,941 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:51,941 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635448369] [2021-06-05 08:01:51,941 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635448369] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:51,941 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839780187] [2021-06-05 08:01:51,941 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 231 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 231 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:52,015 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-06-05 08:01:52,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:52,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 08:01:52,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:52,219 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:52,220 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839780187] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:52,220 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:52,220 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2021-06-05 08:01:52,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211989778] [2021-06-05 08:01:52,220 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-06-05 08:01:52,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:52,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-06-05 08:01:52,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=581, Unknown=0, NotChecked=0, Total=756 [2021-06-05 08:01:52,221 INFO L87 Difference]: Start difference. First operand 4563 states and 12853 transitions. Second operand has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:52,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:52,671 INFO L93 Difference]: Finished difference Result 6561 states and 16977 transitions. [2021-06-05 08:01:52,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 08:01:52,671 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-06-05 08:01:52,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:52,679 INFO L225 Difference]: With dead ends: 6561 [2021-06-05 08:01:52,679 INFO L226 Difference]: Without dead ends: 6291 [2021-06-05 08:01:52,679 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 474 ImplicationChecksByTransitivity, 591.9ms TimeCoverageRelationStatistics Valid=767, Invalid=1989, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 08:01:52,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6291 states. [2021-06-05 08:01:52,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6291 to 4578. [2021-06-05 08:01:52,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4578 states, 4577 states have (on average 2.814725802927682) internal successors, (12883), 4577 states have internal predecessors, (12883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:52,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4578 states to 4578 states and 12883 transitions. [2021-06-05 08:01:52,740 INFO L78 Accepts]: Start accepts. Automaton has 4578 states and 12883 transitions. Word has length 140 [2021-06-05 08:01:52,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:52,741 INFO L482 AbstractCegarLoop]: Abstraction has 4578 states and 12883 transitions. [2021-06-05 08:01:52,741 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:52,741 INFO L276 IsEmpty]: Start isEmpty. Operand 4578 states and 12883 transitions. [2021-06-05 08:01:52,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-06-05 08:01:52,745 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:52,745 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:52,957 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 231 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable235 [2021-06-05 08:01:52,957 INFO L430 AbstractCegarLoop]: === Iteration 237 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:52,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:52,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1293535918, now seen corresponding path program 228 times [2021-06-05 08:01:52,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:52,957 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233772206] [2021-06-05 08:01:52,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:52,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:53,245 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:53,246 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:53,246 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233772206] [2021-06-05 08:01:53,246 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233772206] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:53,246 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540042995] [2021-06-05 08:01:53,246 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 232 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 232 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:53,357 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2021-06-05 08:01:53,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:53,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 08:01:53,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:53,581 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:53,581 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540042995] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:53,581 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:53,581 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2021-06-05 08:01:53,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468120310] [2021-06-05 08:01:53,581 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 08:01:53,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:53,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 08:01:53,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=644, Unknown=0, NotChecked=0, Total=812 [2021-06-05 08:01:53,582 INFO L87 Difference]: Start difference. First operand 4578 states and 12883 transitions. Second operand has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:54,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:54,183 INFO L93 Difference]: Finished difference Result 6446 states and 16747 transitions. [2021-06-05 08:01:54,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 08:01:54,183 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-06-05 08:01:54,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:54,190 INFO L225 Difference]: With dead ends: 6446 [2021-06-05 08:01:54,190 INFO L226 Difference]: Without dead ends: 6176 [2021-06-05 08:01:54,190 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 556 ImplicationChecksByTransitivity, 674.7ms TimeCoverageRelationStatistics Valid=840, Invalid=2352, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 08:01:54,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6176 states. [2021-06-05 08:01:54,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6176 to 4578. [2021-06-05 08:01:54,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4578 states, 4577 states have (on average 2.814725802927682) internal successors, (12883), 4577 states have internal predecessors, (12883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:54,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4578 states to 4578 states and 12883 transitions. [2021-06-05 08:01:54,246 INFO L78 Accepts]: Start accepts. Automaton has 4578 states and 12883 transitions. Word has length 140 [2021-06-05 08:01:54,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:54,246 INFO L482 AbstractCegarLoop]: Abstraction has 4578 states and 12883 transitions. [2021-06-05 08:01:54,246 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:54,246 INFO L276 IsEmpty]: Start isEmpty. Operand 4578 states and 12883 transitions. [2021-06-05 08:01:54,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-06-05 08:01:54,251 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:54,251 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:54,468 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236,232 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:54,468 INFO L430 AbstractCegarLoop]: === Iteration 238 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:54,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:54,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1264105024, now seen corresponding path program 229 times [2021-06-05 08:01:54,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:54,468 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555491089] [2021-06-05 08:01:54,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:54,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:54,725 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:54,725 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:54,725 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555491089] [2021-06-05 08:01:54,725 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555491089] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:54,725 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382902732] [2021-06-05 08:01:54,725 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 233 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 233 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:54,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:54,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 08:01:54,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:54,974 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:54,974 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382902732] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:54,974 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:54,974 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2021-06-05 08:01:54,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163163760] [2021-06-05 08:01:54,974 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-06-05 08:01:54,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:54,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-06-05 08:01:54,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=600, Unknown=0, NotChecked=0, Total=756 [2021-06-05 08:01:54,975 INFO L87 Difference]: Start difference. First operand 4578 states and 12883 transitions. Second operand has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:55,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:55,448 INFO L93 Difference]: Finished difference Result 6421 states and 16697 transitions. [2021-06-05 08:01:55,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 08:01:55,448 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-06-05 08:01:55,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:55,456 INFO L225 Difference]: With dead ends: 6421 [2021-06-05 08:01:55,456 INFO L226 Difference]: Without dead ends: 6151 [2021-06-05 08:01:55,457 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 569.9ms TimeCoverageRelationStatistics Valid=769, Invalid=2201, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 08:01:55,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6151 states. [2021-06-05 08:01:55,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6151 to 4578. [2021-06-05 08:01:55,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4578 states, 4577 states have (on average 2.814725802927682) internal successors, (12883), 4577 states have internal predecessors, (12883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:55,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4578 states to 4578 states and 12883 transitions. [2021-06-05 08:01:55,521 INFO L78 Accepts]: Start accepts. Automaton has 4578 states and 12883 transitions. Word has length 140 [2021-06-05 08:01:55,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:55,521 INFO L482 AbstractCegarLoop]: Abstraction has 4578 states and 12883 transitions. [2021-06-05 08:01:55,521 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:55,521 INFO L276 IsEmpty]: Start isEmpty. Operand 4578 states and 12883 transitions. [2021-06-05 08:01:55,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-06-05 08:01:55,526 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:55,526 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:55,742 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 233 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable237 [2021-06-05 08:01:55,742 INFO L430 AbstractCegarLoop]: === Iteration 239 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:55,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:55,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1666313968, now seen corresponding path program 230 times [2021-06-05 08:01:55,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:55,742 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278075918] [2021-06-05 08:01:55,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:55,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:56,074 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:56,074 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:56,074 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278075918] [2021-06-05 08:01:56,074 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278075918] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:56,074 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183901233] [2021-06-05 08:01:56,074 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 234 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 234 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:56,146 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:01:56,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:56,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 08:01:56,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:56,366 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:56,367 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183901233] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:56,367 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:56,367 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2021-06-05 08:01:56,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418725605] [2021-06-05 08:01:56,367 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 08:01:56,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:56,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 08:01:56,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=662, Unknown=0, NotChecked=0, Total=812 [2021-06-05 08:01:56,367 INFO L87 Difference]: Start difference. First operand 4578 states and 12883 transitions. Second operand has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:57,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:57,147 INFO L93 Difference]: Finished difference Result 6371 states and 16597 transitions. [2021-06-05 08:01:57,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 08:01:57,148 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-06-05 08:01:57,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:57,154 INFO L225 Difference]: With dead ends: 6371 [2021-06-05 08:01:57,154 INFO L226 Difference]: Without dead ends: 6101 [2021-06-05 08:01:57,155 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 635 ImplicationChecksByTransitivity, 909.6ms TimeCoverageRelationStatistics Valid=850, Invalid=2572, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 08:01:57,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6101 states. [2021-06-05 08:01:57,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6101 to 4578. [2021-06-05 08:01:57,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4578 states, 4577 states have (on average 2.814725802927682) internal successors, (12883), 4577 states have internal predecessors, (12883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:57,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4578 states to 4578 states and 12883 transitions. [2021-06-05 08:01:57,209 INFO L78 Accepts]: Start accepts. Automaton has 4578 states and 12883 transitions. Word has length 140 [2021-06-05 08:01:57,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:57,209 INFO L482 AbstractCegarLoop]: Abstraction has 4578 states and 12883 transitions. [2021-06-05 08:01:57,209 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:57,210 INFO L276 IsEmpty]: Start isEmpty. Operand 4578 states and 12883 transitions. [2021-06-05 08:01:57,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-06-05 08:01:57,213 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:57,213 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:57,430 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238,234 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:57,430 INFO L430 AbstractCegarLoop]: === Iteration 240 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:57,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:57,431 INFO L82 PathProgramCache]: Analyzing trace with hash 351421310, now seen corresponding path program 231 times [2021-06-05 08:01:57,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:57,431 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127510618] [2021-06-05 08:01:57,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:57,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:57,781 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:57,782 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:57,782 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127510618] [2021-06-05 08:01:57,782 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127510618] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:57,782 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884669585] [2021-06-05 08:01:57,782 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 235 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 235 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:57,878 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-06-05 08:01:57,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:57,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 45 conjunts are in the unsatisfiable core [2021-06-05 08:01:57,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:58,063 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:58,063 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884669585] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:58,063 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:58,063 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2021-06-05 08:01:58,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839205894] [2021-06-05 08:01:58,063 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-06-05 08:01:58,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:58,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-06-05 08:01:58,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=615, Unknown=0, NotChecked=0, Total=756 [2021-06-05 08:01:58,064 INFO L87 Difference]: Start difference. First operand 4578 states and 12883 transitions. Second operand has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:58,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:01:58,600 INFO L93 Difference]: Finished difference Result 6321 states and 16497 transitions. [2021-06-05 08:01:58,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 08:01:58,600 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-06-05 08:01:58,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:01:58,607 INFO L225 Difference]: With dead ends: 6321 [2021-06-05 08:01:58,607 INFO L226 Difference]: Without dead ends: 6051 [2021-06-05 08:01:58,607 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 624 ImplicationChecksByTransitivity, 697.2ms TimeCoverageRelationStatistics Valid=787, Invalid=2405, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 08:01:58,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6051 states. [2021-06-05 08:01:58,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6051 to 4578. [2021-06-05 08:01:58,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4578 states, 4577 states have (on average 2.814725802927682) internal successors, (12883), 4577 states have internal predecessors, (12883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:58,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4578 states to 4578 states and 12883 transitions. [2021-06-05 08:01:58,676 INFO L78 Accepts]: Start accepts. Automaton has 4578 states and 12883 transitions. Word has length 140 [2021-06-05 08:01:58,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:01:58,676 INFO L482 AbstractCegarLoop]: Abstraction has 4578 states and 12883 transitions. [2021-06-05 08:01:58,676 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:01:58,676 INFO L276 IsEmpty]: Start isEmpty. Operand 4578 states and 12883 transitions. [2021-06-05 08:01:58,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-06-05 08:01:58,681 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:01:58,681 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:01:58,889 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 235 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable239 [2021-06-05 08:01:58,889 INFO L430 AbstractCegarLoop]: === Iteration 241 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:01:58,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:01:58,889 INFO L82 PathProgramCache]: Analyzing trace with hash -547102130, now seen corresponding path program 232 times [2021-06-05 08:01:58,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:01:58,889 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154293067] [2021-06-05 08:01:58,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:01:58,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:01:59,145 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:59,145 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:01:59,145 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154293067] [2021-06-05 08:01:59,145 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154293067] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:59,145 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192143785] [2021-06-05 08:01:59,145 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 236 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 236 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:01:59,284 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:01:59,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:01:59,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 08:01:59,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:01:59,472 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:01:59,472 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192143785] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:01:59,472 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:01:59,472 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2021-06-05 08:01:59,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445583863] [2021-06-05 08:01:59,472 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 08:01:59,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:01:59,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 08:01:59,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=676, Unknown=0, NotChecked=0, Total=812 [2021-06-05 08:01:59,473 INFO L87 Difference]: Start difference. First operand 4578 states and 12883 transitions. Second operand has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:00,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:00,171 INFO L93 Difference]: Finished difference Result 6271 states and 16397 transitions. [2021-06-05 08:02:00,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 08:02:00,172 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-06-05 08:02:00,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:00,178 INFO L225 Difference]: With dead ends: 6271 [2021-06-05 08:02:00,178 INFO L226 Difference]: Without dead ends: 6001 [2021-06-05 08:02:00,179 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 719 ImplicationChecksByTransitivity, 756.3ms TimeCoverageRelationStatistics Valid=876, Invalid=2784, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 08:02:00,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6001 states. [2021-06-05 08:02:00,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6001 to 4578. [2021-06-05 08:02:00,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4578 states, 4577 states have (on average 2.814725802927682) internal successors, (12883), 4577 states have internal predecessors, (12883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:00,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4578 states to 4578 states and 12883 transitions. [2021-06-05 08:02:00,234 INFO L78 Accepts]: Start accepts. Automaton has 4578 states and 12883 transitions. Word has length 140 [2021-06-05 08:02:00,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:00,234 INFO L482 AbstractCegarLoop]: Abstraction has 4578 states and 12883 transitions. [2021-06-05 08:02:00,234 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:00,234 INFO L276 IsEmpty]: Start isEmpty. Operand 4578 states and 12883 transitions. [2021-06-05 08:02:00,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-06-05 08:02:00,238 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:00,238 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:00,453 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240,236 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:00,453 INFO L430 AbstractCegarLoop]: === Iteration 242 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:00,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:00,453 INFO L82 PathProgramCache]: Analyzing trace with hash 2132911676, now seen corresponding path program 233 times [2021-06-05 08:02:00,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:00,453 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779797224] [2021-06-05 08:02:00,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:00,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:00,685 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:00,685 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:00,685 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779797224] [2021-06-05 08:02:00,685 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779797224] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:00,685 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741246992] [2021-06-05 08:02:00,685 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 237 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 237 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:00,811 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-06-05 08:02:00,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:02:00,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 08:02:00,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:00,981 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:00,981 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741246992] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:00,981 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:00,981 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2021-06-05 08:02:00,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798270897] [2021-06-05 08:02:00,984 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-06-05 08:02:00,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:00,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-06-05 08:02:00,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=626, Unknown=0, NotChecked=0, Total=756 [2021-06-05 08:02:00,984 INFO L87 Difference]: Start difference. First operand 4578 states and 12883 transitions. Second operand has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:01,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:01,553 INFO L93 Difference]: Finished difference Result 6221 states and 16297 transitions. [2021-06-05 08:02:01,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 08:02:01,554 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-06-05 08:02:01,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:01,561 INFO L225 Difference]: With dead ends: 6221 [2021-06-05 08:02:01,561 INFO L226 Difference]: Without dead ends: 5951 [2021-06-05 08:02:01,561 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 705 ImplicationChecksByTransitivity, 629.9ms TimeCoverageRelationStatistics Valid=821, Invalid=2601, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 08:02:01,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5951 states. [2021-06-05 08:02:01,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5951 to 4578. [2021-06-05 08:02:01,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4578 states, 4577 states have (on average 2.814725802927682) internal successors, (12883), 4577 states have internal predecessors, (12883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:01,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4578 states to 4578 states and 12883 transitions. [2021-06-05 08:02:01,620 INFO L78 Accepts]: Start accepts. Automaton has 4578 states and 12883 transitions. Word has length 140 [2021-06-05 08:02:01,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:01,620 INFO L482 AbstractCegarLoop]: Abstraction has 4578 states and 12883 transitions. [2021-06-05 08:02:01,620 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:01,620 INFO L276 IsEmpty]: Start isEmpty. Operand 4578 states and 12883 transitions. [2021-06-05 08:02:01,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-06-05 08:02:01,625 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:01,625 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:01,841 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241,237 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:01,841 INFO L430 AbstractCegarLoop]: === Iteration 243 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:01,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:01,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1752467724, now seen corresponding path program 234 times [2021-06-05 08:02:01,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:01,842 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661661199] [2021-06-05 08:02:01,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:01,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:02,180 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:02,180 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:02,180 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661661199] [2021-06-05 08:02:02,181 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661661199] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:02,181 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051820550] [2021-06-05 08:02:02,181 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 238 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 238 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:02,261 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2021-06-05 08:02:02,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:02:02,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 08:02:02,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:02,444 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:02,445 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051820550] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:02,445 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:02,445 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2021-06-05 08:02:02,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520363677] [2021-06-05 08:02:02,445 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 08:02:02,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:02,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 08:02:02,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=686, Unknown=0, NotChecked=0, Total=812 [2021-06-05 08:02:02,445 INFO L87 Difference]: Start difference. First operand 4578 states and 12883 transitions. Second operand has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:03,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:03,230 INFO L93 Difference]: Finished difference Result 6171 states and 16197 transitions. [2021-06-05 08:02:03,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 08:02:03,230 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-06-05 08:02:03,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:03,237 INFO L225 Difference]: With dead ends: 6171 [2021-06-05 08:02:03,237 INFO L226 Difference]: Without dead ends: 5901 [2021-06-05 08:02:03,238 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 807 ImplicationChecksByTransitivity, 853.4ms TimeCoverageRelationStatistics Valid=918, Invalid=2988, Unknown=0, NotChecked=0, Total=3906 [2021-06-05 08:02:03,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5901 states. [2021-06-05 08:02:03,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5901 to 4578. [2021-06-05 08:02:03,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4578 states, 4577 states have (on average 2.814725802927682) internal successors, (12883), 4577 states have internal predecessors, (12883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:03,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4578 states to 4578 states and 12883 transitions. [2021-06-05 08:02:03,301 INFO L78 Accepts]: Start accepts. Automaton has 4578 states and 12883 transitions. Word has length 140 [2021-06-05 08:02:03,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:03,301 INFO L482 AbstractCegarLoop]: Abstraction has 4578 states and 12883 transitions. [2021-06-05 08:02:03,301 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:03,301 INFO L276 IsEmpty]: Start isEmpty. Operand 4578 states and 12883 transitions. [2021-06-05 08:02:03,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-06-05 08:02:03,306 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:03,306 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:03,522 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242,238 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:03,522 INFO L430 AbstractCegarLoop]: === Iteration 244 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:03,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:03,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1918124422, now seen corresponding path program 235 times [2021-06-05 08:02:03,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:03,523 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194004552] [2021-06-05 08:02:03,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:03,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:03,741 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:03,741 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:03,741 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194004552] [2021-06-05 08:02:03,741 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194004552] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:03,741 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219976930] [2021-06-05 08:02:03,741 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 239 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 239 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:03,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:03,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 08:02:03,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:04,035 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:04,035 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219976930] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:04,035 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:04,035 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2021-06-05 08:02:04,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486838724] [2021-06-05 08:02:04,035 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-06-05 08:02:04,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:04,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-06-05 08:02:04,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=633, Unknown=0, NotChecked=0, Total=756 [2021-06-05 08:02:04,036 INFO L87 Difference]: Start difference. First operand 4578 states and 12883 transitions. Second operand has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:04,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:04,626 INFO L93 Difference]: Finished difference Result 6121 states and 16097 transitions. [2021-06-05 08:02:04,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 08:02:04,627 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-06-05 08:02:04,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:04,633 INFO L225 Difference]: With dead ends: 6121 [2021-06-05 08:02:04,633 INFO L226 Difference]: Without dead ends: 5851 [2021-06-05 08:02:04,634 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 790 ImplicationChecksByTransitivity, 623.9ms TimeCoverageRelationStatistics Valid=871, Invalid=2789, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 08:02:04,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5851 states. [2021-06-05 08:02:04,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5851 to 4578. [2021-06-05 08:02:04,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4578 states, 4577 states have (on average 2.814725802927682) internal successors, (12883), 4577 states have internal predecessors, (12883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:04,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4578 states to 4578 states and 12883 transitions. [2021-06-05 08:02:04,685 INFO L78 Accepts]: Start accepts. Automaton has 4578 states and 12883 transitions. Word has length 140 [2021-06-05 08:02:04,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:04,685 INFO L482 AbstractCegarLoop]: Abstraction has 4578 states and 12883 transitions. [2021-06-05 08:02:04,685 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:04,685 INFO L276 IsEmpty]: Start isEmpty. Operand 4578 states and 12883 transitions. [2021-06-05 08:02:04,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-06-05 08:02:04,689 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:04,689 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:04,890 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 239 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable243 [2021-06-05 08:02:04,890 INFO L430 AbstractCegarLoop]: === Iteration 245 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:04,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:04,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1109072566, now seen corresponding path program 236 times [2021-06-05 08:02:04,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:04,890 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976384929] [2021-06-05 08:02:04,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:04,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:05,123 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:05,123 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:05,123 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976384929] [2021-06-05 08:02:05,123 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976384929] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:05,123 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033907208] [2021-06-05 08:02:05,123 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 240 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 240 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:05,220 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:02:05,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:02:05,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 08:02:05,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:05,402 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:05,402 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033907208] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:05,402 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:05,402 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2021-06-05 08:02:05,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258511415] [2021-06-05 08:02:05,403 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 08:02:05,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:05,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 08:02:05,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2021-06-05 08:02:05,403 INFO L87 Difference]: Start difference. First operand 4578 states and 12883 transitions. Second operand has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:06,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:06,134 INFO L93 Difference]: Finished difference Result 6071 states and 15997 transitions. [2021-06-05 08:02:06,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 08:02:06,134 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-06-05 08:02:06,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:06,141 INFO L225 Difference]: With dead ends: 6071 [2021-06-05 08:02:06,141 INFO L226 Difference]: Without dead ends: 5801 [2021-06-05 08:02:06,142 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 899 ImplicationChecksByTransitivity, 762.9ms TimeCoverageRelationStatistics Valid=976, Invalid=3184, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 08:02:06,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5801 states. [2021-06-05 08:02:06,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5801 to 4578. [2021-06-05 08:02:06,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4578 states, 4577 states have (on average 2.814725802927682) internal successors, (12883), 4577 states have internal predecessors, (12883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:06,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4578 states to 4578 states and 12883 transitions. [2021-06-05 08:02:06,203 INFO L78 Accepts]: Start accepts. Automaton has 4578 states and 12883 transitions. Word has length 140 [2021-06-05 08:02:06,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:06,203 INFO L482 AbstractCegarLoop]: Abstraction has 4578 states and 12883 transitions. [2021-06-05 08:02:06,203 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:06,203 INFO L276 IsEmpty]: Start isEmpty. Operand 4578 states and 12883 transitions. [2021-06-05 08:02:06,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-06-05 08:02:06,207 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:06,207 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:06,421 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 240 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable244 [2021-06-05 08:02:06,421 INFO L430 AbstractCegarLoop]: === Iteration 246 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:06,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:06,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1793944632, now seen corresponding path program 237 times [2021-06-05 08:02:06,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:06,421 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076450884] [2021-06-05 08:02:06,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:06,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:06,636 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:06,637 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:06,637 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076450884] [2021-06-05 08:02:06,637 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076450884] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:06,637 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493076358] [2021-06-05 08:02:06,637 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 241 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 241 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:06,730 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-06-05 08:02:06,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:02:06,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 39 conjunts are in the unsatisfiable core [2021-06-05 08:02:06,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:06,897 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:06,897 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493076358] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:06,897 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:06,897 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2021-06-05 08:02:06,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314444319] [2021-06-05 08:02:06,898 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-06-05 08:02:06,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:06,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-06-05 08:02:06,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=636, Unknown=0, NotChecked=0, Total=756 [2021-06-05 08:02:06,898 INFO L87 Difference]: Start difference. First operand 4578 states and 12883 transitions. Second operand has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:07,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:07,554 INFO L93 Difference]: Finished difference Result 6021 states and 15897 transitions. [2021-06-05 08:02:07,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 08:02:07,554 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-06-05 08:02:07,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:07,561 INFO L225 Difference]: With dead ends: 6021 [2021-06-05 08:02:07,561 INFO L226 Difference]: Without dead ends: 5751 [2021-06-05 08:02:07,561 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 879 ImplicationChecksByTransitivity, 676.4ms TimeCoverageRelationStatistics Valid=937, Invalid=2969, Unknown=0, NotChecked=0, Total=3906 [2021-06-05 08:02:07,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5751 states. [2021-06-05 08:02:07,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5751 to 4578. [2021-06-05 08:02:07,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4578 states, 4577 states have (on average 2.814725802927682) internal successors, (12883), 4577 states have internal predecessors, (12883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:07,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4578 states to 4578 states and 12883 transitions. [2021-06-05 08:02:07,619 INFO L78 Accepts]: Start accepts. Automaton has 4578 states and 12883 transitions. Word has length 140 [2021-06-05 08:02:07,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:07,620 INFO L482 AbstractCegarLoop]: Abstraction has 4578 states and 12883 transitions. [2021-06-05 08:02:07,620 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:07,620 INFO L276 IsEmpty]: Start isEmpty. Operand 4578 states and 12883 transitions. [2021-06-05 08:02:07,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-06-05 08:02:07,624 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:07,624 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:07,841 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 241 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable245 [2021-06-05 08:02:07,841 INFO L430 AbstractCegarLoop]: === Iteration 247 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:07,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:07,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1548867336, now seen corresponding path program 238 times [2021-06-05 08:02:07,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:07,841 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091720570] [2021-06-05 08:02:07,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:07,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:08,064 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:08,064 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:08,064 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091720570] [2021-06-05 08:02:08,064 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091720570] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:08,064 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860341084] [2021-06-05 08:02:08,064 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 242 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 242 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:08,133 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:02:08,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:02:08,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 08:02:08,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:08,312 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:08,312 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860341084] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:08,312 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:08,312 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2021-06-05 08:02:08,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808109138] [2021-06-05 08:02:08,312 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 08:02:08,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:08,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 08:02:08,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=694, Unknown=0, NotChecked=0, Total=812 [2021-06-05 08:02:08,313 INFO L87 Difference]: Start difference. First operand 4578 states and 12883 transitions. Second operand has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:09,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:09,231 INFO L93 Difference]: Finished difference Result 5971 states and 15797 transitions. [2021-06-05 08:02:09,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 08:02:09,232 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-06-05 08:02:09,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:09,238 INFO L225 Difference]: With dead ends: 5971 [2021-06-05 08:02:09,239 INFO L226 Difference]: Without dead ends: 5701 [2021-06-05 08:02:09,239 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 995 ImplicationChecksByTransitivity, 862.1ms TimeCoverageRelationStatistics Valid=1050, Invalid=3372, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 08:02:09,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5701 states. [2021-06-05 08:02:09,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5701 to 4578. [2021-06-05 08:02:09,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4578 states, 4577 states have (on average 2.814725802927682) internal successors, (12883), 4577 states have internal predecessors, (12883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:09,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4578 states to 4578 states and 12883 transitions. [2021-06-05 08:02:09,297 INFO L78 Accepts]: Start accepts. Automaton has 4578 states and 12883 transitions. Word has length 140 [2021-06-05 08:02:09,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:09,297 INFO L482 AbstractCegarLoop]: Abstraction has 4578 states and 12883 transitions. [2021-06-05 08:02:09,297 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:09,297 INFO L276 IsEmpty]: Start isEmpty. Operand 4578 states and 12883 transitions. [2021-06-05 08:02:09,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-06-05 08:02:09,301 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:09,301 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:09,518 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 242 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable246 [2021-06-05 08:02:09,518 INFO L430 AbstractCegarLoop]: === Iteration 248 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:09,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:09,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1172017014, now seen corresponding path program 239 times [2021-06-05 08:02:09,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:09,519 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394448560] [2021-06-05 08:02:09,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:09,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:09,773 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:09,773 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:09,773 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394448560] [2021-06-05 08:02:09,773 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394448560] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:09,773 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598969397] [2021-06-05 08:02:09,773 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 243 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 243 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:09,853 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-06-05 08:02:09,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:02:09,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 08:02:09,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:10,016 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:10,016 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598969397] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:10,016 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:10,016 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2021-06-05 08:02:10,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580942925] [2021-06-05 08:02:10,017 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-06-05 08:02:10,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:10,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-06-05 08:02:10,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=635, Unknown=0, NotChecked=0, Total=756 [2021-06-05 08:02:10,017 INFO L87 Difference]: Start difference. First operand 4578 states and 12883 transitions. Second operand has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:10,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:10,727 INFO L93 Difference]: Finished difference Result 5921 states and 15697 transitions. [2021-06-05 08:02:10,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 08:02:10,728 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-06-05 08:02:10,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:10,735 INFO L225 Difference]: With dead ends: 5921 [2021-06-05 08:02:10,735 INFO L226 Difference]: Without dead ends: 5651 [2021-06-05 08:02:10,735 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 972 ImplicationChecksByTransitivity, 727.6ms TimeCoverageRelationStatistics Valid=1019, Invalid=3141, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 08:02:10,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5651 states. [2021-06-05 08:02:10,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5651 to 4578. [2021-06-05 08:02:10,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4578 states, 4577 states have (on average 2.814725802927682) internal successors, (12883), 4577 states have internal predecessors, (12883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:10,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4578 states to 4578 states and 12883 transitions. [2021-06-05 08:02:10,793 INFO L78 Accepts]: Start accepts. Automaton has 4578 states and 12883 transitions. Word has length 140 [2021-06-05 08:02:10,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:10,794 INFO L482 AbstractCegarLoop]: Abstraction has 4578 states and 12883 transitions. [2021-06-05 08:02:10,794 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:10,794 INFO L276 IsEmpty]: Start isEmpty. Operand 4578 states and 12883 transitions. [2021-06-05 08:02:10,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-06-05 08:02:10,798 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:10,798 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:11,015 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 243 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable247 [2021-06-05 08:02:11,015 INFO L430 AbstractCegarLoop]: === Iteration 249 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:11,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:11,016 INFO L82 PathProgramCache]: Analyzing trace with hash -1796194746, now seen corresponding path program 240 times [2021-06-05 08:02:11,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:11,016 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556268649] [2021-06-05 08:02:11,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:11,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:11,230 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:11,231 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:11,231 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556268649] [2021-06-05 08:02:11,231 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556268649] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:11,231 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570902014] [2021-06-05 08:02:11,231 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 244 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 244 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:11,329 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2021-06-05 08:02:11,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:02:11,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 08:02:11,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:11,501 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:11,501 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570902014] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:11,501 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:11,501 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2021-06-05 08:02:11,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927457160] [2021-06-05 08:02:11,501 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 08:02:11,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:11,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 08:02:11,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2021-06-05 08:02:11,502 INFO L87 Difference]: Start difference. First operand 4578 states and 12883 transitions. Second operand has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:12,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:12,342 INFO L93 Difference]: Finished difference Result 5871 states and 15597 transitions. [2021-06-05 08:02:12,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 08:02:12,342 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-06-05 08:02:12,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:12,349 INFO L225 Difference]: With dead ends: 5871 [2021-06-05 08:02:12,349 INFO L226 Difference]: Without dead ends: 5601 [2021-06-05 08:02:12,350 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 992 ImplicationChecksByTransitivity, 821.3ms TimeCoverageRelationStatistics Valid=999, Invalid=3423, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 08:02:12,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5601 states. [2021-06-05 08:02:12,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5601 to 4578. [2021-06-05 08:02:12,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4578 states, 4577 states have (on average 2.814725802927682) internal successors, (12883), 4577 states have internal predecessors, (12883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:12,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4578 states to 4578 states and 12883 transitions. [2021-06-05 08:02:12,403 INFO L78 Accepts]: Start accepts. Automaton has 4578 states and 12883 transitions. Word has length 140 [2021-06-05 08:02:12,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:12,403 INFO L482 AbstractCegarLoop]: Abstraction has 4578 states and 12883 transitions. [2021-06-05 08:02:12,404 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:12,404 INFO L276 IsEmpty]: Start isEmpty. Operand 4578 states and 12883 transitions. [2021-06-05 08:02:12,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-06-05 08:02:12,408 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:12,408 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:12,624 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248,244 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:12,624 INFO L430 AbstractCegarLoop]: === Iteration 250 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:12,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:12,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1341978572, now seen corresponding path program 241 times [2021-06-05 08:02:12,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:12,625 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106992491] [2021-06-05 08:02:12,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:12,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:12,830 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:12,830 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:12,831 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106992491] [2021-06-05 08:02:12,831 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106992491] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:12,831 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462118581] [2021-06-05 08:02:12,831 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 245 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 245 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:12,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:12,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 08:02:12,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:13,058 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:13,059 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462118581] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:13,059 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:13,059 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2021-06-05 08:02:13,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826372153] [2021-06-05 08:02:13,059 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-06-05 08:02:13,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:13,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-06-05 08:02:13,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=630, Unknown=0, NotChecked=0, Total=756 [2021-06-05 08:02:13,060 INFO L87 Difference]: Start difference. First operand 4578 states and 12883 transitions. Second operand has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:13,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:13,904 INFO L93 Difference]: Finished difference Result 5821 states and 15497 transitions. [2021-06-05 08:02:13,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 08:02:13,904 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-06-05 08:02:13,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:13,911 INFO L225 Difference]: With dead ends: 5821 [2021-06-05 08:02:13,911 INFO L226 Difference]: Without dead ends: 5551 [2021-06-05 08:02:13,911 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1069 ImplicationChecksByTransitivity, 819.7ms TimeCoverageRelationStatistics Valid=1117, Invalid=3305, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 08:02:13,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5551 states. [2021-06-05 08:02:13,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5551 to 4578. [2021-06-05 08:02:13,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4578 states, 4577 states have (on average 2.814725802927682) internal successors, (12883), 4577 states have internal predecessors, (12883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:13,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4578 states to 4578 states and 12883 transitions. [2021-06-05 08:02:13,968 INFO L78 Accepts]: Start accepts. Automaton has 4578 states and 12883 transitions. Word has length 140 [2021-06-05 08:02:13,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:13,968 INFO L482 AbstractCegarLoop]: Abstraction has 4578 states and 12883 transitions. [2021-06-05 08:02:13,968 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:13,968 INFO L276 IsEmpty]: Start isEmpty. Operand 4578 states and 12883 transitions. [2021-06-05 08:02:13,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-06-05 08:02:13,972 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:13,973 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:14,190 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 245 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable249 [2021-06-05 08:02:14,190 INFO L430 AbstractCegarLoop]: === Iteration 251 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:14,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:14,191 INFO L82 PathProgramCache]: Analyzing trace with hash -343082236, now seen corresponding path program 242 times [2021-06-05 08:02:14,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:14,191 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660089459] [2021-06-05 08:02:14,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:14,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:14,402 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:14,402 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:14,402 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660089459] [2021-06-05 08:02:14,402 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660089459] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:14,402 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927692514] [2021-06-05 08:02:14,402 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 246 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 246 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:14,488 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:02:14,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:02:14,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 08:02:14,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:14,875 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:14,875 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927692514] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:14,875 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:14,876 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2021-06-05 08:02:14,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998461287] [2021-06-05 08:02:14,876 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 08:02:14,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:14,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 08:02:14,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=686, Unknown=0, NotChecked=0, Total=812 [2021-06-05 08:02:14,876 INFO L87 Difference]: Start difference. First operand 4578 states and 12883 transitions. Second operand has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:15,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:15,914 INFO L93 Difference]: Finished difference Result 5771 states and 15397 transitions. [2021-06-05 08:02:15,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-05 08:02:15,914 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-06-05 08:02:15,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:15,921 INFO L225 Difference]: With dead ends: 5771 [2021-06-05 08:02:15,921 INFO L226 Difference]: Without dead ends: 5501 [2021-06-05 08:02:15,921 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1199 ImplicationChecksByTransitivity, 968.4ms TimeCoverageRelationStatistics Valid=1246, Invalid=3724, Unknown=0, NotChecked=0, Total=4970 [2021-06-05 08:02:15,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5501 states. [2021-06-05 08:02:15,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5501 to 4578. [2021-06-05 08:02:15,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4578 states, 4577 states have (on average 2.814725802927682) internal successors, (12883), 4577 states have internal predecessors, (12883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:15,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4578 states to 4578 states and 12883 transitions. [2021-06-05 08:02:15,980 INFO L78 Accepts]: Start accepts. Automaton has 4578 states and 12883 transitions. Word has length 140 [2021-06-05 08:02:15,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:15,980 INFO L482 AbstractCegarLoop]: Abstraction has 4578 states and 12883 transitions. [2021-06-05 08:02:15,980 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:15,981 INFO L276 IsEmpty]: Start isEmpty. Operand 4578 states and 12883 transitions. [2021-06-05 08:02:15,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-06-05 08:02:15,985 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:15,985 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:16,201 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250,246 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:16,202 INFO L430 AbstractCegarLoop]: === Iteration 252 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:16,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:16,202 INFO L82 PathProgramCache]: Analyzing trace with hash 2072557170, now seen corresponding path program 243 times [2021-06-05 08:02:16,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:16,202 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844390383] [2021-06-05 08:02:16,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:16,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:16,502 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:16,502 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:16,502 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844390383] [2021-06-05 08:02:16,502 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844390383] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:16,502 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049732313] [2021-06-05 08:02:16,502 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 247 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 247 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:16,579 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-06-05 08:02:16,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:02:16,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 33 conjunts are in the unsatisfiable core [2021-06-05 08:02:16,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:16,736 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:16,736 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049732313] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:16,736 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:16,736 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2021-06-05 08:02:16,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242053818] [2021-06-05 08:02:16,737 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-06-05 08:02:16,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:16,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-06-05 08:02:16,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=621, Unknown=0, NotChecked=0, Total=756 [2021-06-05 08:02:16,737 INFO L87 Difference]: Start difference. First operand 4578 states and 12883 transitions. Second operand has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:17,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:17,525 INFO L93 Difference]: Finished difference Result 5721 states and 15297 transitions. [2021-06-05 08:02:17,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 08:02:17,526 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-06-05 08:02:17,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:17,532 INFO L225 Difference]: With dead ends: 5721 [2021-06-05 08:02:17,532 INFO L226 Difference]: Without dead ends: 5451 [2021-06-05 08:02:17,532 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1170 ImplicationChecksByTransitivity, 823.9ms TimeCoverageRelationStatistics Valid=1231, Invalid=3461, Unknown=0, NotChecked=0, Total=4692 [2021-06-05 08:02:17,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5451 states. [2021-06-05 08:02:17,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5451 to 4578. [2021-06-05 08:02:17,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4578 states, 4577 states have (on average 2.814725802927682) internal successors, (12883), 4577 states have internal predecessors, (12883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:17,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4578 states to 4578 states and 12883 transitions. [2021-06-05 08:02:17,585 INFO L78 Accepts]: Start accepts. Automaton has 4578 states and 12883 transitions. Word has length 140 [2021-06-05 08:02:17,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:17,585 INFO L482 AbstractCegarLoop]: Abstraction has 4578 states and 12883 transitions. [2021-06-05 08:02:17,585 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:17,585 INFO L276 IsEmpty]: Start isEmpty. Operand 4578 states and 12883 transitions. [2021-06-05 08:02:17,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-06-05 08:02:17,589 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:17,589 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:17,803 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251,247 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:17,803 INFO L430 AbstractCegarLoop]: === Iteration 253 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:17,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:17,803 INFO L82 PathProgramCache]: Analyzing trace with hash -192090814, now seen corresponding path program 244 times [2021-06-05 08:02:17,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:17,803 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075049169] [2021-06-05 08:02:17,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:17,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:18,009 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:18,010 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:18,010 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075049169] [2021-06-05 08:02:18,010 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075049169] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:18,010 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226173428] [2021-06-05 08:02:18,010 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 248 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 248 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:18,088 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:02:18,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:02:18,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 08:02:18,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:18,264 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:18,264 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226173428] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:18,264 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:18,264 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2021-06-05 08:02:18,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511908592] [2021-06-05 08:02:18,264 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 08:02:18,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:18,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 08:02:18,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=676, Unknown=0, NotChecked=0, Total=812 [2021-06-05 08:02:18,265 INFO L87 Difference]: Start difference. First operand 4578 states and 12883 transitions. Second operand has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:19,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:19,422 INFO L93 Difference]: Finished difference Result 5671 states and 15197 transitions. [2021-06-05 08:02:19,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 08:02:19,423 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-06-05 08:02:19,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:19,429 INFO L225 Difference]: With dead ends: 5671 [2021-06-05 08:02:19,429 INFO L226 Difference]: Without dead ends: 5401 [2021-06-05 08:02:19,430 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1307 ImplicationChecksByTransitivity, 1062.4ms TimeCoverageRelationStatistics Valid=1368, Invalid=3888, Unknown=0, NotChecked=0, Total=5256 [2021-06-05 08:02:19,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5401 states. [2021-06-05 08:02:19,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5401 to 4578. [2021-06-05 08:02:19,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4578 states, 4577 states have (on average 2.814725802927682) internal successors, (12883), 4577 states have internal predecessors, (12883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:19,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4578 states to 4578 states and 12883 transitions. [2021-06-05 08:02:19,483 INFO L78 Accepts]: Start accepts. Automaton has 4578 states and 12883 transitions. Word has length 140 [2021-06-05 08:02:19,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:19,483 INFO L482 AbstractCegarLoop]: Abstraction has 4578 states and 12883 transitions. [2021-06-05 08:02:19,484 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:19,484 INFO L276 IsEmpty]: Start isEmpty. Operand 4578 states and 12883 transitions. [2021-06-05 08:02:19,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-06-05 08:02:19,488 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:19,488 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:19,704 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252,248 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:19,705 INFO L430 AbstractCegarLoop]: === Iteration 254 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:19,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:19,705 INFO L82 PathProgramCache]: Analyzing trace with hash 422148656, now seen corresponding path program 245 times [2021-06-05 08:02:19,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:19,705 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707113095] [2021-06-05 08:02:19,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:19,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:19,917 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:19,917 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:19,917 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707113095] [2021-06-05 08:02:19,917 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707113095] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:19,917 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763745588] [2021-06-05 08:02:19,917 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 249 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 249 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:19,991 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-06-05 08:02:19,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:02:19,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 08:02:19,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:20,198 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:20,198 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763745588] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:20,198 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:20,198 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2021-06-05 08:02:20,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672945894] [2021-06-05 08:02:20,199 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-06-05 08:02:20,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:20,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-06-05 08:02:20,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=608, Unknown=0, NotChecked=0, Total=756 [2021-06-05 08:02:20,201 INFO L87 Difference]: Start difference. First operand 4578 states and 12883 transitions. Second operand has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:21,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:21,070 INFO L93 Difference]: Finished difference Result 5621 states and 15097 transitions. [2021-06-05 08:02:21,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 08:02:21,071 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-06-05 08:02:21,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:21,077 INFO L225 Difference]: With dead ends: 5621 [2021-06-05 08:02:21,077 INFO L226 Difference]: Without dead ends: 5351 [2021-06-05 08:02:21,078 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1275 ImplicationChecksByTransitivity, 818.7ms TimeCoverageRelationStatistics Valid=1361, Invalid=3609, Unknown=0, NotChecked=0, Total=4970 [2021-06-05 08:02:21,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5351 states. [2021-06-05 08:02:21,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5351 to 4578. [2021-06-05 08:02:21,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4578 states, 4577 states have (on average 2.814725802927682) internal successors, (12883), 4577 states have internal predecessors, (12883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:21,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4578 states to 4578 states and 12883 transitions. [2021-06-05 08:02:21,134 INFO L78 Accepts]: Start accepts. Automaton has 4578 states and 12883 transitions. Word has length 140 [2021-06-05 08:02:21,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:21,134 INFO L482 AbstractCegarLoop]: Abstraction has 4578 states and 12883 transitions. [2021-06-05 08:02:21,134 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:21,134 INFO L276 IsEmpty]: Start isEmpty. Operand 4578 states and 12883 transitions. [2021-06-05 08:02:21,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-06-05 08:02:21,138 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:21,138 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:21,356 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253,249 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:21,356 INFO L430 AbstractCegarLoop]: === Iteration 255 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:21,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:21,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1293093632, now seen corresponding path program 246 times [2021-06-05 08:02:21,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:21,357 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868266126] [2021-06-05 08:02:21,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:21,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:21,566 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:21,566 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:21,566 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868266126] [2021-06-05 08:02:21,566 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868266126] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:21,566 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403471864] [2021-06-05 08:02:21,566 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 250 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 250 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:21,646 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2021-06-05 08:02:21,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:02:21,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 31 conjunts are in the unsatisfiable core [2021-06-05 08:02:21,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:21,819 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:21,819 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403471864] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:21,819 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:21,819 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2021-06-05 08:02:21,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909600880] [2021-06-05 08:02:21,820 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 08:02:21,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:21,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 08:02:21,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=662, Unknown=0, NotChecked=0, Total=812 [2021-06-05 08:02:21,820 INFO L87 Difference]: Start difference. First operand 4578 states and 12883 transitions. Second operand has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:22,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:22,822 INFO L93 Difference]: Finished difference Result 5631 states and 15147 transitions. [2021-06-05 08:02:22,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 08:02:22,823 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-06-05 08:02:22,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:22,829 INFO L225 Difference]: With dead ends: 5631 [2021-06-05 08:02:22,829 INFO L226 Difference]: Without dead ends: 5361 [2021-06-05 08:02:22,830 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1286 ImplicationChecksByTransitivity, 949.8ms TimeCoverageRelationStatistics Valid=1284, Invalid=3972, Unknown=0, NotChecked=0, Total=5256 [2021-06-05 08:02:22,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5361 states. [2021-06-05 08:02:22,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5361 to 4578. [2021-06-05 08:02:22,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4578 states, 4577 states have (on average 2.815818221542495) internal successors, (12888), 4577 states have internal predecessors, (12888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:22,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4578 states to 4578 states and 12888 transitions. [2021-06-05 08:02:22,887 INFO L78 Accepts]: Start accepts. Automaton has 4578 states and 12888 transitions. Word has length 140 [2021-06-05 08:02:22,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:22,887 INFO L482 AbstractCegarLoop]: Abstraction has 4578 states and 12888 transitions. [2021-06-05 08:02:22,887 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:22,890 INFO L276 IsEmpty]: Start isEmpty. Operand 4578 states and 12888 transitions. [2021-06-05 08:02:22,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-06-05 08:02:22,896 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:22,896 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:23,111 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 250 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable254 [2021-06-05 08:02:23,113 INFO L430 AbstractCegarLoop]: === Iteration 256 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:23,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:23,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1969226062, now seen corresponding path program 247 times [2021-06-05 08:02:23,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:23,121 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012885270] [2021-06-05 08:02:23,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:23,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:23,382 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:23,383 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:23,385 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012885270] [2021-06-05 08:02:23,386 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012885270] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:23,386 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508024050] [2021-06-05 08:02:23,386 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 251 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 251 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:23,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:23,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 08:02:23,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:23,613 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:23,614 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508024050] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:23,614 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:23,614 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2021-06-05 08:02:23,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492945019] [2021-06-05 08:02:23,617 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-06-05 08:02:23,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:23,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-06-05 08:02:23,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=591, Unknown=0, NotChecked=0, Total=756 [2021-06-05 08:02:23,623 INFO L87 Difference]: Start difference. First operand 4578 states and 12888 transitions. Second operand has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:24,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:24,449 INFO L93 Difference]: Finished difference Result 6398 states and 17321 transitions. [2021-06-05 08:02:24,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 08:02:24,454 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-06-05 08:02:24,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:24,463 INFO L225 Difference]: With dead ends: 6398 [2021-06-05 08:02:24,464 INFO L226 Difference]: Without dead ends: 6128 [2021-06-05 08:02:24,466 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1383 ImplicationChecksByTransitivity, 841.1ms TimeCoverageRelationStatistics Valid=1508, Invalid=3748, Unknown=0, NotChecked=0, Total=5256 [2021-06-05 08:02:24,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6128 states. [2021-06-05 08:02:24,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6128 to 4758. [2021-06-05 08:02:24,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4758 states, 4757 states have (on average 2.8267815850325837) internal successors, (13447), 4757 states have internal predecessors, (13447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:24,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4758 states to 4758 states and 13447 transitions. [2021-06-05 08:02:24,535 INFO L78 Accepts]: Start accepts. Automaton has 4758 states and 13447 transitions. Word has length 140 [2021-06-05 08:02:24,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:24,535 INFO L482 AbstractCegarLoop]: Abstraction has 4758 states and 13447 transitions. [2021-06-05 08:02:24,535 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 28 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:24,535 INFO L276 IsEmpty]: Start isEmpty. Operand 4758 states and 13447 transitions. [2021-06-05 08:02:24,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-06-05 08:02:24,539 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:24,539 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:24,761 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 251 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable255 [2021-06-05 08:02:24,762 INFO L430 AbstractCegarLoop]: === Iteration 257 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:24,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:24,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1991569312, now seen corresponding path program 248 times [2021-06-05 08:02:24,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:24,762 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111511402] [2021-06-05 08:02:24,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:24,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:24,973 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:24,973 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:24,973 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111511402] [2021-06-05 08:02:24,974 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111511402] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:24,974 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307635713] [2021-06-05 08:02:24,974 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 252 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 252 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:25,048 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:02:25,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:02:25,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 08:02:25,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:25,250 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:25,251 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307635713] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:25,251 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:25,251 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2021-06-05 08:02:25,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226681356] [2021-06-05 08:02:25,251 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 08:02:25,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:25,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 08:02:25,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=644, Unknown=0, NotChecked=0, Total=812 [2021-06-05 08:02:25,252 INFO L87 Difference]: Start difference. First operand 4758 states and 13447 transitions. Second operand has 29 states, 29 states have (on average 4.931034482758621) internal successors, (143), 29 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:26,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:26,353 INFO L93 Difference]: Finished difference Result 6221 states and 16821 transitions. [2021-06-05 08:02:26,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 08:02:26,353 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.931034482758621) internal successors, (143), 29 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-06-05 08:02:26,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:26,360 INFO L225 Difference]: With dead ends: 6221 [2021-06-05 08:02:26,360 INFO L226 Difference]: Without dead ends: 5646 [2021-06-05 08:02:26,361 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1534 ImplicationChecksByTransitivity, 1047.4ms TimeCoverageRelationStatistics Valid=1452, Invalid=4554, Unknown=0, NotChecked=0, Total=6006 [2021-06-05 08:02:26,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5646 states. [2021-06-05 08:02:26,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5646 to 3203. [2021-06-05 08:02:26,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3203 states, 3202 states have (on average 2.7382885696439727) internal successors, (8768), 3202 states have internal predecessors, (8768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:26,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3203 states to 3203 states and 8768 transitions. [2021-06-05 08:02:26,464 INFO L78 Accepts]: Start accepts. Automaton has 3203 states and 8768 transitions. Word has length 140 [2021-06-05 08:02:26,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:26,464 INFO L482 AbstractCegarLoop]: Abstraction has 3203 states and 8768 transitions. [2021-06-05 08:02:26,464 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.931034482758621) internal successors, (143), 29 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:26,464 INFO L276 IsEmpty]: Start isEmpty. Operand 3203 states and 8768 transitions. [2021-06-05 08:02:26,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-06-05 08:02:26,467 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:26,468 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:26,681 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 252 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable256 [2021-06-05 08:02:26,681 INFO L430 AbstractCegarLoop]: === Iteration 258 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:26,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:26,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1192364991, now seen corresponding path program 249 times [2021-06-05 08:02:26,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:26,681 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466777551] [2021-06-05 08:02:26,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:26,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:27,391 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:27,391 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:27,391 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466777551] [2021-06-05 08:02:27,392 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466777551] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:27,392 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206372730] [2021-06-05 08:02:27,392 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 253 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 253 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:27,518 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-06-05 08:02:27,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:02:27,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 08:02:27,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:27,729 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:27,730 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206372730] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:27,730 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:27,730 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2021-06-05 08:02:27,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848103329] [2021-06-05 08:02:27,730 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 08:02:27,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:27,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 08:02:27,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=634, Unknown=0, NotChecked=0, Total=812 [2021-06-05 08:02:27,731 INFO L87 Difference]: Start difference. First operand 3203 states and 8768 transitions. Second operand has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:28,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:28,277 INFO L93 Difference]: Finished difference Result 4721 states and 12007 transitions. [2021-06-05 08:02:28,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 08:02:28,277 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-06-05 08:02:28,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:28,283 INFO L225 Difference]: With dead ends: 4721 [2021-06-05 08:02:28,283 INFO L226 Difference]: Without dead ends: 4451 [2021-06-05 08:02:28,283 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 1007.1ms TimeCoverageRelationStatistics Valid=844, Invalid=2348, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 08:02:28,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4451 states. [2021-06-05 08:02:28,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4451 to 3278. [2021-06-05 08:02:28,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3278 states, 3277 states have (on average 2.744278303326213) internal successors, (8993), 3277 states have internal predecessors, (8993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:28,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3278 states to 3278 states and 8993 transitions. [2021-06-05 08:02:28,324 INFO L78 Accepts]: Start accepts. Automaton has 3278 states and 8993 transitions. Word has length 145 [2021-06-05 08:02:28,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:28,324 INFO L482 AbstractCegarLoop]: Abstraction has 3278 states and 8993 transitions. [2021-06-05 08:02:28,324 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:28,324 INFO L276 IsEmpty]: Start isEmpty. Operand 3278 states and 8993 transitions. [2021-06-05 08:02:28,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-06-05 08:02:28,327 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:28,327 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:28,543 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 253 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable257 [2021-06-05 08:02:28,543 INFO L430 AbstractCegarLoop]: === Iteration 259 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:28,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:28,544 INFO L82 PathProgramCache]: Analyzing trace with hash 315630223, now seen corresponding path program 250 times [2021-06-05 08:02:28,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:28,544 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425125109] [2021-06-05 08:02:28,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:28,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:28,893 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:28,894 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:28,894 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425125109] [2021-06-05 08:02:28,894 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425125109] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:28,894 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798280181] [2021-06-05 08:02:28,894 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 254 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 254 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:28,989 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:02:28,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:02:28,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 08:02:28,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:29,187 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:29,188 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798280181] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:29,188 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:29,188 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 30 [2021-06-05 08:02:29,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231560230] [2021-06-05 08:02:29,188 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:02:29,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:29,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:02:29,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=699, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:02:29,189 INFO L87 Difference]: Start difference. First operand 3278 states and 8993 transitions. Second operand has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:29,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:29,748 INFO L93 Difference]: Finished difference Result 5291 states and 13222 transitions. [2021-06-05 08:02:29,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 08:02:29,749 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-06-05 08:02:29,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:29,754 INFO L225 Difference]: With dead ends: 5291 [2021-06-05 08:02:29,754 INFO L226 Difference]: Without dead ends: 5021 [2021-06-05 08:02:29,755 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 687.8ms TimeCoverageRelationStatistics Valid=905, Invalid=2635, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 08:02:29,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5021 states. [2021-06-05 08:02:29,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5021 to 3353. [2021-06-05 08:02:29,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3353 states, 3352 states have (on average 2.75) internal successors, (9218), 3352 states have internal predecessors, (9218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:29,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3353 states to 3353 states and 9218 transitions. [2021-06-05 08:02:29,797 INFO L78 Accepts]: Start accepts. Automaton has 3353 states and 9218 transitions. Word has length 145 [2021-06-05 08:02:29,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:29,797 INFO L482 AbstractCegarLoop]: Abstraction has 3353 states and 9218 transitions. [2021-06-05 08:02:29,797 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:29,798 INFO L276 IsEmpty]: Start isEmpty. Operand 3353 states and 9218 transitions. [2021-06-05 08:02:29,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-06-05 08:02:29,800 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:29,801 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:30,017 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258,254 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:30,017 INFO L430 AbstractCegarLoop]: === Iteration 260 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:30,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:30,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1421696131, now seen corresponding path program 251 times [2021-06-05 08:02:30,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:30,018 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409025296] [2021-06-05 08:02:30,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:30,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:30,290 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:30,290 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:30,290 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409025296] [2021-06-05 08:02:30,290 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409025296] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:30,290 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276053421] [2021-06-05 08:02:30,290 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 255 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 255 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:30,367 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-06-05 08:02:30,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:02:30,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 08:02:30,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:30,548 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:30,548 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276053421] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:30,548 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:30,548 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2021-06-05 08:02:30,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601654215] [2021-06-05 08:02:30,549 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 08:02:30,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:30,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 08:02:30,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=652, Unknown=0, NotChecked=0, Total=812 [2021-06-05 08:02:30,549 INFO L87 Difference]: Start difference. First operand 3353 states and 9218 transitions. Second operand has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:31,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:31,096 INFO L93 Difference]: Finished difference Result 5321 states and 13357 transitions. [2021-06-05 08:02:31,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 08:02:31,097 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-06-05 08:02:31,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:31,101 INFO L225 Difference]: With dead ends: 5321 [2021-06-05 08:02:31,102 INFO L226 Difference]: Without dead ends: 5051 [2021-06-05 08:02:31,102 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 734 ImplicationChecksByTransitivity, 628.9ms TimeCoverageRelationStatistics Valid=899, Invalid=2641, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 08:02:31,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5051 states. [2021-06-05 08:02:31,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5051 to 3428. [2021-06-05 08:02:31,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3428 states, 3427 states have (on average 2.7554712576597606) internal successors, (9443), 3427 states have internal predecessors, (9443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:31,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3428 states to 3428 states and 9443 transitions. [2021-06-05 08:02:31,146 INFO L78 Accepts]: Start accepts. Automaton has 3428 states and 9443 transitions. Word has length 145 [2021-06-05 08:02:31,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:31,146 INFO L482 AbstractCegarLoop]: Abstraction has 3428 states and 9443 transitions. [2021-06-05 08:02:31,146 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:31,146 INFO L276 IsEmpty]: Start isEmpty. Operand 3428 states and 9443 transitions. [2021-06-05 08:02:31,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-06-05 08:02:31,149 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:31,149 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:31,365 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 255 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable259 [2021-06-05 08:02:31,366 INFO L430 AbstractCegarLoop]: === Iteration 261 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:31,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:31,366 INFO L82 PathProgramCache]: Analyzing trace with hash -57147827, now seen corresponding path program 252 times [2021-06-05 08:02:31,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:31,366 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386517893] [2021-06-05 08:02:31,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:31,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:31,637 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:31,638 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:31,638 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386517893] [2021-06-05 08:02:31,638 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386517893] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:31,638 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654525762] [2021-06-05 08:02:31,638 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 256 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 256 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:31,723 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2021-06-05 08:02:31,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:02:31,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 08:02:31,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:31,919 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:31,919 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654525762] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:31,920 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:31,920 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 30 [2021-06-05 08:02:31,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671838269] [2021-06-05 08:02:31,920 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:02:31,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:31,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:02:31,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=716, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:02:31,920 INFO L87 Difference]: Start difference. First operand 3428 states and 9443 transitions. Second operand has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:32,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:32,533 INFO L93 Difference]: Finished difference Result 5346 states and 13482 transitions. [2021-06-05 08:02:32,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 08:02:32,533 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-06-05 08:02:32,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:32,539 INFO L225 Difference]: With dead ends: 5346 [2021-06-05 08:02:32,539 INFO L226 Difference]: Without dead ends: 5076 [2021-06-05 08:02:32,540 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 752 ImplicationChecksByTransitivity, 708.2ms TimeCoverageRelationStatistics Valid=922, Invalid=2860, Unknown=0, NotChecked=0, Total=3782 [2021-06-05 08:02:32,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5076 states. [2021-06-05 08:02:32,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5076 to 3503. [2021-06-05 08:02:32,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3503 states, 3502 states have (on average 2.7607081667618503) internal successors, (9668), 3502 states have internal predecessors, (9668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:32,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3503 states to 3503 states and 9668 transitions. [2021-06-05 08:02:32,585 INFO L78 Accepts]: Start accepts. Automaton has 3503 states and 9668 transitions. Word has length 145 [2021-06-05 08:02:32,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:32,585 INFO L482 AbstractCegarLoop]: Abstraction has 3503 states and 9668 transitions. [2021-06-05 08:02:32,585 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:32,585 INFO L276 IsEmpty]: Start isEmpty. Operand 3503 states and 9668 transitions. [2021-06-05 08:02:32,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-06-05 08:02:32,588 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:32,588 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:32,805 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260,256 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:32,805 INFO L430 AbstractCegarLoop]: === Iteration 262 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:32,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:32,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1960587451, now seen corresponding path program 253 times [2021-06-05 08:02:32,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:32,806 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139110190] [2021-06-05 08:02:32,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:32,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:33,065 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:33,065 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:33,066 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139110190] [2021-06-05 08:02:33,066 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139110190] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:33,066 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000762171] [2021-06-05 08:02:33,066 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 257 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 257 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:33,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:33,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 08:02:33,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:33,325 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:33,328 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000762171] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:33,328 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:33,328 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2021-06-05 08:02:33,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764043444] [2021-06-05 08:02:33,329 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 08:02:33,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:33,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 08:02:33,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=666, Unknown=0, NotChecked=0, Total=812 [2021-06-05 08:02:33,329 INFO L87 Difference]: Start difference. First operand 3503 states and 9668 transitions. Second operand has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:33,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:33,907 INFO L93 Difference]: Finished difference Result 5371 states and 13607 transitions. [2021-06-05 08:02:33,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 08:02:33,907 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-06-05 08:02:33,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:33,913 INFO L225 Difference]: With dead ends: 5371 [2021-06-05 08:02:33,913 INFO L226 Difference]: Without dead ends: 5101 [2021-06-05 08:02:33,914 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 824 ImplicationChecksByTransitivity, 642.1ms TimeCoverageRelationStatistics Valid=930, Invalid=2852, Unknown=0, NotChecked=0, Total=3782 [2021-06-05 08:02:33,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5101 states. [2021-06-05 08:02:33,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5101 to 3578. [2021-06-05 08:02:33,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3578 states, 3577 states have (on average 2.7657254682694994) internal successors, (9893), 3577 states have internal predecessors, (9893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:33,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3578 states to 3578 states and 9893 transitions. [2021-06-05 08:02:33,962 INFO L78 Accepts]: Start accepts. Automaton has 3578 states and 9893 transitions. Word has length 145 [2021-06-05 08:02:33,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:33,962 INFO L482 AbstractCegarLoop]: Abstraction has 3578 states and 9893 transitions. [2021-06-05 08:02:33,962 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:33,962 INFO L276 IsEmpty]: Start isEmpty. Operand 3578 states and 9893 transitions. [2021-06-05 08:02:33,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-06-05 08:02:33,966 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:33,966 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:34,181 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261,257 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:34,181 INFO L430 AbstractCegarLoop]: === Iteration 263 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:34,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:34,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1062064011, now seen corresponding path program 254 times [2021-06-05 08:02:34,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:34,181 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908176116] [2021-06-05 08:02:34,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:34,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:34,444 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:34,445 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:34,445 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908176116] [2021-06-05 08:02:34,445 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908176116] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:34,445 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273348703] [2021-06-05 08:02:34,445 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 258 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 258 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:34,522 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:02:34,522 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:02:34,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 08:02:34,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:34,796 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:34,796 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273348703] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:34,797 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:34,797 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 30 [2021-06-05 08:02:34,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82249154] [2021-06-05 08:02:34,797 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:02:34,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:34,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:02:34,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=729, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:02:34,797 INFO L87 Difference]: Start difference. First operand 3578 states and 9893 transitions. Second operand has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:35,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:35,505 INFO L93 Difference]: Finished difference Result 5396 states and 13732 transitions. [2021-06-05 08:02:35,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 08:02:35,505 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-06-05 08:02:35,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:35,510 INFO L225 Difference]: With dead ends: 5396 [2021-06-05 08:02:35,511 INFO L226 Difference]: Without dead ends: 5126 [2021-06-05 08:02:35,511 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 845 ImplicationChecksByTransitivity, 776.9ms TimeCoverageRelationStatistics Valid=955, Invalid=3077, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 08:02:35,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5126 states. [2021-06-05 08:02:35,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5126 to 3653. [2021-06-05 08:02:35,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3653 states, 3652 states have (on average 2.7705366922234393) internal successors, (10118), 3652 states have internal predecessors, (10118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:35,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3653 states to 3653 states and 10118 transitions. [2021-06-05 08:02:35,559 INFO L78 Accepts]: Start accepts. Automaton has 3653 states and 10118 transitions. Word has length 145 [2021-06-05 08:02:35,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:35,559 INFO L482 AbstractCegarLoop]: Abstraction has 3653 states and 10118 transitions. [2021-06-05 08:02:35,559 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:35,559 INFO L276 IsEmpty]: Start isEmpty. Operand 3653 states and 10118 transitions. [2021-06-05 08:02:35,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-06-05 08:02:35,562 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:35,562 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:35,779 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262,258 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:35,779 INFO L430 AbstractCegarLoop]: === Iteration 264 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:35,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:35,779 INFO L82 PathProgramCache]: Analyzing trace with hash -552889479, now seen corresponding path program 255 times [2021-06-05 08:02:35,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:35,779 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406175802] [2021-06-05 08:02:35,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:35,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:36,062 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:36,063 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:36,063 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406175802] [2021-06-05 08:02:36,063 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406175802] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:36,063 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426065619] [2021-06-05 08:02:36,063 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 259 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 259 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:36,155 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-06-05 08:02:36,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:02:36,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 44 conjunts are in the unsatisfiable core [2021-06-05 08:02:36,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:36,326 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:36,326 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426065619] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:36,326 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:36,326 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2021-06-05 08:02:36,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698639140] [2021-06-05 08:02:36,326 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 08:02:36,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:36,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 08:02:36,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=676, Unknown=0, NotChecked=0, Total=812 [2021-06-05 08:02:36,327 INFO L87 Difference]: Start difference. First operand 3653 states and 10118 transitions. Second operand has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:36,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:36,946 INFO L93 Difference]: Finished difference Result 5421 states and 13857 transitions. [2021-06-05 08:02:36,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 08:02:36,946 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-06-05 08:02:36,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:36,952 INFO L225 Difference]: With dead ends: 5421 [2021-06-05 08:02:36,952 INFO L226 Difference]: Without dead ends: 5151 [2021-06-05 08:02:36,953 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 922 ImplicationChecksByTransitivity, 670.8ms TimeCoverageRelationStatistics Valid=977, Invalid=3055, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 08:02:36,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5151 states. [2021-06-05 08:02:36,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5151 to 3728. [2021-06-05 08:02:37,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3728 states, 3727 states have (on average 2.775154279581433) internal successors, (10343), 3727 states have internal predecessors, (10343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:37,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3728 states to 3728 states and 10343 transitions. [2021-06-05 08:02:37,009 INFO L78 Accepts]: Start accepts. Automaton has 3728 states and 10343 transitions. Word has length 145 [2021-06-05 08:02:37,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:37,009 INFO L482 AbstractCegarLoop]: Abstraction has 3728 states and 10343 transitions. [2021-06-05 08:02:37,009 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:37,009 INFO L276 IsEmpty]: Start isEmpty. Operand 3728 states and 10343 transitions. [2021-06-05 08:02:37,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-06-05 08:02:37,012 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:37,012 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:37,218 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263,259 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:37,218 INFO L430 AbstractCegarLoop]: === Iteration 265 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:37,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:37,218 INFO L82 PathProgramCache]: Analyzing trace with hash -933333431, now seen corresponding path program 256 times [2021-06-05 08:02:37,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:37,218 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120522082] [2021-06-05 08:02:37,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:37,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:37,674 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:37,675 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:37,675 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120522082] [2021-06-05 08:02:37,675 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120522082] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:37,675 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75748025] [2021-06-05 08:02:37,675 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 260 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 260 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:37,757 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:02:37,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:02:37,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 08:02:37,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:37,950 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:37,951 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75748025] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:37,951 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:37,951 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 30 [2021-06-05 08:02:37,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58822198] [2021-06-05 08:02:37,951 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:02:37,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:37,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:02:37,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=738, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:02:37,951 INFO L87 Difference]: Start difference. First operand 3728 states and 10343 transitions. Second operand has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:38,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:38,713 INFO L93 Difference]: Finished difference Result 5446 states and 13982 transitions. [2021-06-05 08:02:38,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 08:02:38,713 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-06-05 08:02:38,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:38,719 INFO L225 Difference]: With dead ends: 5446 [2021-06-05 08:02:38,719 INFO L226 Difference]: Without dead ends: 5176 [2021-06-05 08:02:38,719 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 946 ImplicationChecksByTransitivity, 975.3ms TimeCoverageRelationStatistics Valid=1004, Invalid=3286, Unknown=0, NotChecked=0, Total=4290 [2021-06-05 08:02:38,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5176 states. [2021-06-05 08:02:38,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5176 to 3803. [2021-06-05 08:02:38,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3803 states, 3802 states have (on average 2.7795896896370333) internal successors, (10568), 3802 states have internal predecessors, (10568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:38,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3803 states to 3803 states and 10568 transitions. [2021-06-05 08:02:38,769 INFO L78 Accepts]: Start accepts. Automaton has 3803 states and 10568 transitions. Word has length 145 [2021-06-05 08:02:38,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:38,769 INFO L482 AbstractCegarLoop]: Abstraction has 3803 states and 10568 transitions. [2021-06-05 08:02:38,769 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:38,769 INFO L276 IsEmpty]: Start isEmpty. Operand 3803 states and 10568 transitions. [2021-06-05 08:02:38,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-06-05 08:02:38,772 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:38,772 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:38,989 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264,260 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:38,989 INFO L430 AbstractCegarLoop]: === Iteration 266 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:38,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:38,989 INFO L82 PathProgramCache]: Analyzing trace with hash -308958281, now seen corresponding path program 257 times [2021-06-05 08:02:38,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:38,990 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30805498] [2021-06-05 08:02:38,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:38,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:39,255 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:39,255 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:39,255 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30805498] [2021-06-05 08:02:39,255 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30805498] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:39,255 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417564790] [2021-06-05 08:02:39,255 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 261 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 261 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:39,328 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-06-05 08:02:39,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:02:39,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 08:02:39,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:39,525 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:39,525 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417564790] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:39,525 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:39,525 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2021-06-05 08:02:39,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006710011] [2021-06-05 08:02:39,526 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 08:02:39,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:39,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 08:02:39,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=682, Unknown=0, NotChecked=0, Total=812 [2021-06-05 08:02:39,526 INFO L87 Difference]: Start difference. First operand 3803 states and 10568 transitions. Second operand has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:40,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:40,194 INFO L93 Difference]: Finished difference Result 5471 states and 14107 transitions. [2021-06-05 08:02:40,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 08:02:40,194 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-06-05 08:02:40,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:40,201 INFO L225 Difference]: With dead ends: 5471 [2021-06-05 08:02:40,201 INFO L226 Difference]: Without dead ends: 5201 [2021-06-05 08:02:40,201 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1024 ImplicationChecksByTransitivity, 689.3ms TimeCoverageRelationStatistics Valid=1040, Invalid=3250, Unknown=0, NotChecked=0, Total=4290 [2021-06-05 08:02:40,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5201 states. [2021-06-05 08:02:40,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5201 to 3878. [2021-06-05 08:02:40,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3878 states, 3877 states have (on average 2.7838534949703377) internal successors, (10793), 3877 states have internal predecessors, (10793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:40,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 10793 transitions. [2021-06-05 08:02:40,253 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 10793 transitions. Word has length 145 [2021-06-05 08:02:40,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:40,253 INFO L482 AbstractCegarLoop]: Abstraction has 3878 states and 10793 transitions. [2021-06-05 08:02:40,253 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:40,253 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 10793 transitions. [2021-06-05 08:02:40,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-06-05 08:02:40,257 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:40,257 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:40,472 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 261 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable265 [2021-06-05 08:02:40,472 INFO L430 AbstractCegarLoop]: === Iteration 267 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:40,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:40,472 INFO L82 PathProgramCache]: Analyzing trace with hash 500093575, now seen corresponding path program 258 times [2021-06-05 08:02:40,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:40,472 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903534799] [2021-06-05 08:02:40,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:40,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:40,731 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:40,731 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:40,731 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903534799] [2021-06-05 08:02:40,731 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903534799] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:40,731 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213092973] [2021-06-05 08:02:40,731 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 262 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 262 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:40,812 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2021-06-05 08:02:40,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:02:40,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 08:02:40,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:41,002 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:41,003 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213092973] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:41,003 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:41,003 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 30 [2021-06-05 08:02:41,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693543682] [2021-06-05 08:02:41,003 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:02:41,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:41,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:02:41,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=743, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:02:41,004 INFO L87 Difference]: Start difference. First operand 3878 states and 10793 transitions. Second operand has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:41,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:41,868 INFO L93 Difference]: Finished difference Result 5496 states and 14232 transitions. [2021-06-05 08:02:41,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 08:02:41,868 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-06-05 08:02:41,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:41,874 INFO L225 Difference]: With dead ends: 5496 [2021-06-05 08:02:41,874 INFO L226 Difference]: Without dead ends: 5226 [2021-06-05 08:02:41,875 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1051 ImplicationChecksByTransitivity, 872.3ms TimeCoverageRelationStatistics Valid=1069, Invalid=3487, Unknown=0, NotChecked=0, Total=4556 [2021-06-05 08:02:41,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5226 states. [2021-06-05 08:02:41,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5226 to 3953. [2021-06-05 08:02:41,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3953 states, 3952 states have (on average 2.7879554655870447) internal successors, (11018), 3952 states have internal predecessors, (11018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:41,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3953 states to 3953 states and 11018 transitions. [2021-06-05 08:02:41,930 INFO L78 Accepts]: Start accepts. Automaton has 3953 states and 11018 transitions. Word has length 145 [2021-06-05 08:02:41,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:41,930 INFO L482 AbstractCegarLoop]: Abstraction has 3953 states and 11018 transitions. [2021-06-05 08:02:41,930 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:41,930 INFO L276 IsEmpty]: Start isEmpty. Operand 3953 states and 11018 transitions. [2021-06-05 08:02:41,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-06-05 08:02:41,934 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:41,934 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:42,151 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266,262 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:42,152 INFO L430 AbstractCegarLoop]: === Iteration 268 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:42,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:42,152 INFO L82 PathProgramCache]: Analyzing trace with hash -891856523, now seen corresponding path program 259 times [2021-06-05 08:02:42,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:42,152 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50049305] [2021-06-05 08:02:42,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:42,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:42,387 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:42,387 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:42,387 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50049305] [2021-06-05 08:02:42,387 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50049305] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:42,387 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959370605] [2021-06-05 08:02:42,387 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 263 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 263 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:42,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:42,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 08:02:42,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:42,676 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:42,676 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959370605] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:42,677 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:42,677 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2021-06-05 08:02:42,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054127832] [2021-06-05 08:02:42,677 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 08:02:42,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:42,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 08:02:42,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=684, Unknown=0, NotChecked=0, Total=812 [2021-06-05 08:02:42,677 INFO L87 Difference]: Start difference. First operand 3953 states and 11018 transitions. Second operand has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:43,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:43,378 INFO L93 Difference]: Finished difference Result 5521 states and 14357 transitions. [2021-06-05 08:02:43,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 08:02:43,378 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-06-05 08:02:43,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:43,385 INFO L225 Difference]: With dead ends: 5521 [2021-06-05 08:02:43,385 INFO L226 Difference]: Without dead ends: 5251 [2021-06-05 08:02:43,385 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1130 ImplicationChecksByTransitivity, 708.6ms TimeCoverageRelationStatistics Valid=1119, Invalid=3437, Unknown=0, NotChecked=0, Total=4556 [2021-06-05 08:02:43,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5251 states. [2021-06-05 08:02:43,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5251 to 4028. [2021-06-05 08:02:43,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4028 states, 4027 states have (on average 2.7919046436553265) internal successors, (11243), 4027 states have internal predecessors, (11243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:43,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4028 states to 4028 states and 11243 transitions. [2021-06-05 08:02:43,445 INFO L78 Accepts]: Start accepts. Automaton has 4028 states and 11243 transitions. Word has length 145 [2021-06-05 08:02:43,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:43,445 INFO L482 AbstractCegarLoop]: Abstraction has 4028 states and 11243 transitions. [2021-06-05 08:02:43,445 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:43,445 INFO L276 IsEmpty]: Start isEmpty. Operand 4028 states and 11243 transitions. [2021-06-05 08:02:43,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-06-05 08:02:43,449 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:43,449 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:43,666 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 263 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable267 [2021-06-05 08:02:43,666 INFO L430 AbstractCegarLoop]: === Iteration 269 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:43,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:43,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1136933819, now seen corresponding path program 260 times [2021-06-05 08:02:43,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:43,666 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440900179] [2021-06-05 08:02:43,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:43,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:43,929 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:43,930 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:43,930 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440900179] [2021-06-05 08:02:43,930 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440900179] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:43,930 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601585498] [2021-06-05 08:02:43,930 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 264 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 264 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:44,012 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:02:44,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:02:44,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 08:02:44,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:44,200 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:44,200 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601585498] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:44,200 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:44,200 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 30 [2021-06-05 08:02:44,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021938654] [2021-06-05 08:02:44,201 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:02:44,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:44,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:02:44,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=744, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:02:44,201 INFO L87 Difference]: Start difference. First operand 4028 states and 11243 transitions. Second operand has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:45,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:45,108 INFO L93 Difference]: Finished difference Result 5546 states and 14482 transitions. [2021-06-05 08:02:45,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 08:02:45,108 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-06-05 08:02:45,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:45,115 INFO L225 Difference]: With dead ends: 5546 [2021-06-05 08:02:45,115 INFO L226 Difference]: Without dead ends: 5276 [2021-06-05 08:02:45,115 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1160 ImplicationChecksByTransitivity, 884.3ms TimeCoverageRelationStatistics Valid=1150, Invalid=3680, Unknown=0, NotChecked=0, Total=4830 [2021-06-05 08:02:45,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5276 states. [2021-06-05 08:02:45,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5276 to 4103. [2021-06-05 08:02:45,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4103 states, 4102 states have (on average 2.795709410043881) internal successors, (11468), 4102 states have internal predecessors, (11468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:45,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4103 states to 4103 states and 11468 transitions. [2021-06-05 08:02:45,173 INFO L78 Accepts]: Start accepts. Automaton has 4103 states and 11468 transitions. Word has length 145 [2021-06-05 08:02:45,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:45,173 INFO L482 AbstractCegarLoop]: Abstraction has 4103 states and 11468 transitions. [2021-06-05 08:02:45,173 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:45,173 INFO L276 IsEmpty]: Start isEmpty. Operand 4103 states and 11468 transitions. [2021-06-05 08:02:45,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-06-05 08:02:45,177 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:45,177 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:45,389 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 264 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable268 [2021-06-05 08:02:45,389 INFO L430 AbstractCegarLoop]: === Iteration 270 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:45,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:45,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1513784141, now seen corresponding path program 261 times [2021-06-05 08:02:45,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:45,389 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614346958] [2021-06-05 08:02:45,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:45,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:45,612 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:45,613 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:45,613 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614346958] [2021-06-05 08:02:45,613 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614346958] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:45,613 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141003648] [2021-06-05 08:02:45,613 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 265 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 265 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:45,693 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-06-05 08:02:45,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:02:45,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 08:02:45,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:45,860 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:45,860 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141003648] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:45,860 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:45,860 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2021-06-05 08:02:45,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858331599] [2021-06-05 08:02:45,860 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 08:02:45,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:45,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 08:02:45,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=682, Unknown=0, NotChecked=0, Total=812 [2021-06-05 08:02:45,861 INFO L87 Difference]: Start difference. First operand 4103 states and 11468 transitions. Second operand has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:46,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:46,646 INFO L93 Difference]: Finished difference Result 5571 states and 14607 transitions. [2021-06-05 08:02:46,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 08:02:46,646 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-06-05 08:02:46,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:46,652 INFO L225 Difference]: With dead ends: 5571 [2021-06-05 08:02:46,652 INFO L226 Difference]: Without dead ends: 5301 [2021-06-05 08:02:46,652 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1240 ImplicationChecksByTransitivity, 777.1ms TimeCoverageRelationStatistics Valid=1214, Invalid=3616, Unknown=0, NotChecked=0, Total=4830 [2021-06-05 08:02:46,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5301 states. [2021-06-05 08:02:46,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5301 to 4178. [2021-06-05 08:02:46,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4178 states, 4177 states have (on average 2.799377543691645) internal successors, (11693), 4177 states have internal predecessors, (11693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:46,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4178 states to 4178 states and 11693 transitions. [2021-06-05 08:02:46,707 INFO L78 Accepts]: Start accepts. Automaton has 4178 states and 11693 transitions. Word has length 145 [2021-06-05 08:02:46,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:46,707 INFO L482 AbstractCegarLoop]: Abstraction has 4178 states and 11693 transitions. [2021-06-05 08:02:46,707 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:46,707 INFO L276 IsEmpty]: Start isEmpty. Operand 4178 states and 11693 transitions. [2021-06-05 08:02:46,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-06-05 08:02:46,711 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:46,711 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:46,911 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable269,265 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:46,912 INFO L430 AbstractCegarLoop]: === Iteration 271 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:46,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:46,912 INFO L82 PathProgramCache]: Analyzing trace with hash -187028605, now seen corresponding path program 262 times [2021-06-05 08:02:46,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:46,912 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281122753] [2021-06-05 08:02:46,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:46,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:47,144 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:47,144 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:47,144 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281122753] [2021-06-05 08:02:47,144 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281122753] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:47,144 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864204860] [2021-06-05 08:02:47,144 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 266 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 266 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:47,253 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:02:47,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:02:47,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 08:02:47,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:47,478 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:47,479 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864204860] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:47,479 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:47,479 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 30 [2021-06-05 08:02:47,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790362877] [2021-06-05 08:02:47,479 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:02:47,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:47,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:02:47,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=741, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:02:47,479 INFO L87 Difference]: Start difference. First operand 4178 states and 11693 transitions. Second operand has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:48,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:48,377 INFO L93 Difference]: Finished difference Result 5596 states and 14732 transitions. [2021-06-05 08:02:48,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-05 08:02:48,377 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-06-05 08:02:48,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:48,383 INFO L225 Difference]: With dead ends: 5596 [2021-06-05 08:02:48,384 INFO L226 Difference]: Without dead ends: 5326 [2021-06-05 08:02:48,384 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1273 ImplicationChecksByTransitivity, 885.8ms TimeCoverageRelationStatistics Valid=1247, Invalid=3865, Unknown=0, NotChecked=0, Total=5112 [2021-06-05 08:02:48,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5326 states. [2021-06-05 08:02:48,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5326 to 4253. [2021-06-05 08:02:48,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4253 states, 4252 states have (on average 2.8029162746942617) internal successors, (11918), 4252 states have internal predecessors, (11918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:48,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4253 states to 4253 states and 11918 transitions. [2021-06-05 08:02:48,447 INFO L78 Accepts]: Start accepts. Automaton has 4253 states and 11918 transitions. Word has length 145 [2021-06-05 08:02:48,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:48,447 INFO L482 AbstractCegarLoop]: Abstraction has 4253 states and 11918 transitions. [2021-06-05 08:02:48,447 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:48,448 INFO L276 IsEmpty]: Start isEmpty. Operand 4253 states and 11918 transitions. [2021-06-05 08:02:48,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-06-05 08:02:48,452 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:48,452 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:48,665 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 266 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable270 [2021-06-05 08:02:48,665 INFO L430 AbstractCegarLoop]: === Iteration 272 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:48,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:48,665 INFO L82 PathProgramCache]: Analyzing trace with hash 267187569, now seen corresponding path program 263 times [2021-06-05 08:02:48,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:48,665 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523844683] [2021-06-05 08:02:48,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:48,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:48,886 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:48,886 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:48,886 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523844683] [2021-06-05 08:02:48,886 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523844683] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:48,886 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147427415] [2021-06-05 08:02:48,886 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 267 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 267 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:48,955 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-06-05 08:02:48,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:02:48,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 08:02:48,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:49,124 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:49,125 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147427415] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:49,125 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:49,125 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2021-06-05 08:02:49,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734223213] [2021-06-05 08:02:49,125 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 08:02:49,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:49,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 08:02:49,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=676, Unknown=0, NotChecked=0, Total=812 [2021-06-05 08:02:49,125 INFO L87 Difference]: Start difference. First operand 4253 states and 11918 transitions. Second operand has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:49,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:49,917 INFO L93 Difference]: Finished difference Result 5621 states and 14857 transitions. [2021-06-05 08:02:49,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 08:02:49,918 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-06-05 08:02:49,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:49,924 INFO L225 Difference]: With dead ends: 5621 [2021-06-05 08:02:49,924 INFO L226 Difference]: Without dead ends: 5351 [2021-06-05 08:02:49,943 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1354 ImplicationChecksByTransitivity, 783.5ms TimeCoverageRelationStatistics Valid=1325, Invalid=3787, Unknown=0, NotChecked=0, Total=5112 [2021-06-05 08:02:49,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5351 states. [2021-06-05 08:02:49,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5351 to 4328. [2021-06-05 08:02:49,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4328 states, 4327 states have (on average 2.8063323318696556) internal successors, (12143), 4327 states have internal predecessors, (12143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:49,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4328 states to 4328 states and 12143 transitions. [2021-06-05 08:02:49,997 INFO L78 Accepts]: Start accepts. Automaton has 4328 states and 12143 transitions. Word has length 145 [2021-06-05 08:02:49,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:49,997 INFO L482 AbstractCegarLoop]: Abstraction has 4328 states and 12143 transitions. [2021-06-05 08:02:49,997 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:49,997 INFO L276 IsEmpty]: Start isEmpty. Operand 4328 states and 12143 transitions. [2021-06-05 08:02:50,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-06-05 08:02:50,006 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:50,006 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:50,222 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271,267 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:50,222 INFO L430 AbstractCegarLoop]: === Iteration 273 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:50,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:50,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1266083905, now seen corresponding path program 264 times [2021-06-05 08:02:50,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:50,223 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184644719] [2021-06-05 08:02:50,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:50,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:50,448 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:50,448 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:50,448 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184644719] [2021-06-05 08:02:50,448 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184644719] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:50,448 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704413042] [2021-06-05 08:02:50,448 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 268 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 268 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:50,521 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2021-06-05 08:02:50,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:02:50,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-05 08:02:50,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:50,706 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:50,706 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704413042] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:50,706 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:50,706 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 30 [2021-06-05 08:02:50,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848946846] [2021-06-05 08:02:50,706 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:02:50,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:50,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:02:50,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=734, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:02:50,707 INFO L87 Difference]: Start difference. First operand 4328 states and 12143 transitions. Second operand has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:51,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:51,656 INFO L93 Difference]: Finished difference Result 5646 states and 14982 transitions. [2021-06-05 08:02:51,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 08:02:51,657 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-06-05 08:02:51,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:51,663 INFO L225 Difference]: With dead ends: 5646 [2021-06-05 08:02:51,663 INFO L226 Difference]: Without dead ends: 5376 [2021-06-05 08:02:51,664 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1343 ImplicationChecksByTransitivity, 907.9ms TimeCoverageRelationStatistics Valid=1273, Invalid=4129, Unknown=0, NotChecked=0, Total=5402 [2021-06-05 08:02:51,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5376 states. [2021-06-05 08:02:51,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5376 to 4403. [2021-06-05 08:02:51,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4403 states, 4402 states have (on average 2.809631985461154) internal successors, (12368), 4402 states have internal predecessors, (12368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:51,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4403 states to 4403 states and 12368 transitions. [2021-06-05 08:02:51,727 INFO L78 Accepts]: Start accepts. Automaton has 4403 states and 12368 transitions. Word has length 145 [2021-06-05 08:02:51,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:51,727 INFO L482 AbstractCegarLoop]: Abstraction has 4403 states and 12368 transitions. [2021-06-05 08:02:51,727 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:51,727 INFO L276 IsEmpty]: Start isEmpty. Operand 4403 states and 12368 transitions. [2021-06-05 08:02:51,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-06-05 08:02:51,731 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:51,731 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:51,947 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272,268 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:51,948 INFO L430 AbstractCegarLoop]: === Iteration 274 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:51,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:51,948 INFO L82 PathProgramCache]: Analyzing trace with hash -613243985, now seen corresponding path program 265 times [2021-06-05 08:02:51,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:51,948 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787574539] [2021-06-05 08:02:51,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:51,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:52,166 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:52,166 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:52,166 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787574539] [2021-06-05 08:02:52,166 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787574539] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:52,166 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582304393] [2021-06-05 08:02:52,166 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 269 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 269 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:52,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:52,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 08:02:52,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:52,402 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:52,402 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582304393] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:52,403 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:52,403 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2021-06-05 08:02:52,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536055504] [2021-06-05 08:02:52,403 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 08:02:52,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:52,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 08:02:52,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=666, Unknown=0, NotChecked=0, Total=812 [2021-06-05 08:02:52,403 INFO L87 Difference]: Start difference. First operand 4403 states and 12368 transitions. Second operand has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:53,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:53,208 INFO L93 Difference]: Finished difference Result 5671 states and 15107 transitions. [2021-06-05 08:02:53,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 08:02:53,208 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-06-05 08:02:53,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:53,215 INFO L225 Difference]: With dead ends: 5671 [2021-06-05 08:02:53,215 INFO L226 Difference]: Without dead ends: 5401 [2021-06-05 08:02:53,215 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1472 ImplicationChecksByTransitivity, 776.3ms TimeCoverageRelationStatistics Valid=1452, Invalid=3950, Unknown=0, NotChecked=0, Total=5402 [2021-06-05 08:02:53,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5401 states. [2021-06-05 08:02:53,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5401 to 4478. [2021-06-05 08:02:53,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4478 states, 4477 states have (on average 2.812821085548358) internal successors, (12593), 4477 states have internal predecessors, (12593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:53,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4478 states to 4478 states and 12593 transitions. [2021-06-05 08:02:53,277 INFO L78 Accepts]: Start accepts. Automaton has 4478 states and 12593 transitions. Word has length 145 [2021-06-05 08:02:53,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:53,277 INFO L482 AbstractCegarLoop]: Abstraction has 4478 states and 12593 transitions. [2021-06-05 08:02:53,277 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:53,277 INFO L276 IsEmpty]: Start isEmpty. Operand 4478 states and 12593 transitions. [2021-06-05 08:02:53,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-06-05 08:02:53,281 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:53,281 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:53,493 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273,269 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:53,493 INFO L430 AbstractCegarLoop]: === Iteration 275 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:53,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:53,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1417075327, now seen corresponding path program 266 times [2021-06-05 08:02:53,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:53,493 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284264263] [2021-06-05 08:02:53,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:53,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:53,770 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:53,770 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:53,770 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284264263] [2021-06-05 08:02:53,770 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284264263] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:53,770 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162887377] [2021-06-05 08:02:53,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 270 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 270 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:53,832 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:02:53,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:02:53,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 08:02:53,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:54,014 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:54,015 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162887377] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:54,015 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:54,015 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 30 [2021-06-05 08:02:54,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065399902] [2021-06-05 08:02:54,015 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:02:54,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:54,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:02:54,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=723, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:02:54,015 INFO L87 Difference]: Start difference. First operand 4478 states and 12593 transitions. Second operand has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:55,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:55,010 INFO L93 Difference]: Finished difference Result 5696 states and 15232 transitions. [2021-06-05 08:02:55,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-06-05 08:02:55,010 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-06-05 08:02:55,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:55,016 INFO L225 Difference]: With dead ends: 5696 [2021-06-05 08:02:55,016 INFO L226 Difference]: Without dead ends: 5426 [2021-06-05 08:02:55,017 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1511 ImplicationChecksByTransitivity, 1012.3ms TimeCoverageRelationStatistics Valid=1489, Invalid=4211, Unknown=0, NotChecked=0, Total=5700 [2021-06-05 08:02:55,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5426 states. [2021-06-05 08:02:55,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5426 to 4553. [2021-06-05 08:02:55,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4553 states, 4552 states have (on average 2.8159050966608086) internal successors, (12818), 4552 states have internal predecessors, (12818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:55,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4553 states to 4553 states and 12818 transitions. [2021-06-05 08:02:55,075 INFO L78 Accepts]: Start accepts. Automaton has 4553 states and 12818 transitions. Word has length 145 [2021-06-05 08:02:55,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:55,075 INFO L482 AbstractCegarLoop]: Abstraction has 4553 states and 12818 transitions. [2021-06-05 08:02:55,075 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:55,075 INFO L276 IsEmpty]: Start isEmpty. Operand 4553 states and 12818 transitions. [2021-06-05 08:02:55,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-06-05 08:02:55,079 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:55,079 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:55,279 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274,270 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:55,280 INFO L430 AbstractCegarLoop]: === Iteration 276 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:55,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:55,280 INFO L82 PathProgramCache]: Analyzing trace with hash 2031314797, now seen corresponding path program 267 times [2021-06-05 08:02:55,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:55,280 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873323184] [2021-06-05 08:02:55,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:55,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:55,496 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:55,496 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:55,496 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873323184] [2021-06-05 08:02:55,496 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873323184] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:55,496 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239667193] [2021-06-05 08:02:55,496 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 271 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 271 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:55,568 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-06-05 08:02:55,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:02:55,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 08:02:55,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:55,733 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:55,734 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239667193] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:55,734 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:55,734 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2021-06-05 08:02:55,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725620007] [2021-06-05 08:02:55,734 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 08:02:55,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:55,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 08:02:55,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=652, Unknown=0, NotChecked=0, Total=812 [2021-06-05 08:02:55,734 INFO L87 Difference]: Start difference. First operand 4553 states and 12818 transitions. Second operand has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:56,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:56,576 INFO L93 Difference]: Finished difference Result 5766 states and 15477 transitions. [2021-06-05 08:02:56,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 08:02:56,576 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-06-05 08:02:56,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:56,582 INFO L225 Difference]: With dead ends: 5766 [2021-06-05 08:02:56,582 INFO L226 Difference]: Without dead ends: 5496 [2021-06-05 08:02:56,583 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1594 ImplicationChecksByTransitivity, 814.4ms TimeCoverageRelationStatistics Valid=1595, Invalid=4105, Unknown=0, NotChecked=0, Total=5700 [2021-06-05 08:02:56,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5496 states. [2021-06-05 08:02:56,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5496 to 4628. [2021-06-05 08:02:56,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4628 states, 4627 states have (on average 2.822130970391182) internal successors, (13058), 4627 states have internal predecessors, (13058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:56,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4628 states to 4628 states and 13058 transitions. [2021-06-05 08:02:56,639 INFO L78 Accepts]: Start accepts. Automaton has 4628 states and 13058 transitions. Word has length 145 [2021-06-05 08:02:56,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:56,639 INFO L482 AbstractCegarLoop]: Abstraction has 4628 states and 13058 transitions. [2021-06-05 08:02:56,639 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:56,639 INFO L276 IsEmpty]: Start isEmpty. Operand 4628 states and 13058 transitions. [2021-06-05 08:02:56,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-06-05 08:02:56,643 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:56,643 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:56,843 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable275,271 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:56,843 INFO L430 AbstractCegarLoop]: === Iteration 277 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:56,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:56,843 INFO L82 PathProgramCache]: Analyzing trace with hash 316072509, now seen corresponding path program 268 times [2021-06-05 08:02:56,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:56,843 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717011870] [2021-06-05 08:02:56,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:56,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:57,066 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:57,066 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:57,066 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717011870] [2021-06-05 08:02:57,066 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717011870] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:57,066 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016610423] [2021-06-05 08:02:57,066 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 272 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 272 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:57,128 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:02:57,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:02:57,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 08:02:57,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:57,333 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:57,333 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016610423] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:57,333 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:57,333 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 30 [2021-06-05 08:02:57,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715345717] [2021-06-05 08:02:57,334 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:02:57,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:57,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:02:57,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=708, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:02:57,334 INFO L87 Difference]: Start difference. First operand 4628 states and 13058 transitions. Second operand has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:58,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:02:58,461 INFO L93 Difference]: Finished difference Result 6344 states and 17103 transitions. [2021-06-05 08:02:58,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-05 08:02:58,461 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-06-05 08:02:58,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:02:58,467 INFO L225 Difference]: With dead ends: 6344 [2021-06-05 08:02:58,468 INFO L226 Difference]: Without dead ends: 5721 [2021-06-05 08:02:58,468 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1731 ImplicationChecksByTransitivity, 1063.7ms TimeCoverageRelationStatistics Valid=1657, Invalid=4663, Unknown=0, NotChecked=0, Total=6320 [2021-06-05 08:02:58,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5721 states. [2021-06-05 08:02:58,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5721 to 4703. [2021-06-05 08:02:58,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4703 states, 4702 states have (on average 2.8260314759676732) internal successors, (13288), 4702 states have internal predecessors, (13288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:58,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4703 states to 4703 states and 13288 transitions. [2021-06-05 08:02:58,521 INFO L78 Accepts]: Start accepts. Automaton has 4703 states and 13288 transitions. Word has length 145 [2021-06-05 08:02:58,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:02:58,521 INFO L482 AbstractCegarLoop]: Abstraction has 4703 states and 13288 transitions. [2021-06-05 08:02:58,521 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:02:58,521 INFO L276 IsEmpty]: Start isEmpty. Operand 4703 states and 13288 transitions. [2021-06-05 08:02:58,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-06-05 08:02:58,525 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:02:58,525 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:02:58,725 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable276,272 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:58,725 INFO L430 AbstractCegarLoop]: === Iteration 278 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:02:58,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:02:58,726 INFO L82 PathProgramCache]: Analyzing trace with hash -716575093, now seen corresponding path program 269 times [2021-06-05 08:02:58,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:02:58,726 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351189153] [2021-06-05 08:02:58,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:02:58,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:02:58,950 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:58,950 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:02:58,950 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351189153] [2021-06-05 08:02:58,950 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351189153] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:58,950 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941496781] [2021-06-05 08:02:58,950 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 273 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 273 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:02:59,014 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-06-05 08:02:59,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:02:59,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 08:02:59,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:02:59,176 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:02:59,176 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941496781] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:02:59,176 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:02:59,176 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2021-06-05 08:02:59,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246137370] [2021-06-05 08:02:59,176 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 08:02:59,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:02:59,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 08:02:59,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=634, Unknown=0, NotChecked=0, Total=812 [2021-06-05 08:02:59,177 INFO L87 Difference]: Start difference. First operand 4703 states and 13288 transitions. Second operand has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:00,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:00,043 INFO L93 Difference]: Finished difference Result 6548 states and 17771 transitions. [2021-06-05 08:03:00,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 08:03:00,044 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-06-05 08:03:00,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:00,050 INFO L225 Difference]: With dead ends: 6548 [2021-06-05 08:03:00,050 INFO L226 Difference]: Without dead ends: 6278 [2021-06-05 08:03:00,051 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1719 ImplicationChecksByTransitivity, 845.4ms TimeCoverageRelationStatistics Valid=1755, Invalid=4251, Unknown=0, NotChecked=0, Total=6006 [2021-06-05 08:03:00,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6278 states. [2021-06-05 08:03:00,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6278 to 4883. [2021-06-05 08:03:00,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4883 states, 4882 states have (on average 2.8363375665710775) internal successors, (13847), 4882 states have internal predecessors, (13847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:00,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4883 states to 4883 states and 13847 transitions. [2021-06-05 08:03:00,106 INFO L78 Accepts]: Start accepts. Automaton has 4883 states and 13847 transitions. Word has length 145 [2021-06-05 08:03:00,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:00,106 INFO L482 AbstractCegarLoop]: Abstraction has 4883 states and 13847 transitions. [2021-06-05 08:03:00,106 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:00,106 INFO L276 IsEmpty]: Start isEmpty. Operand 4883 states and 13847 transitions. [2021-06-05 08:03:00,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-06-05 08:03:00,109 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:00,110 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:00,310 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 273 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable277 [2021-06-05 08:03:00,310 INFO L430 AbstractCegarLoop]: === Iteration 279 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:00,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:00,310 INFO L82 PathProgramCache]: Analyzing trace with hash -694231843, now seen corresponding path program 270 times [2021-06-05 08:03:00,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:00,310 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231609255] [2021-06-05 08:03:00,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:00,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:00,529 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:00,529 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:00,529 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231609255] [2021-06-05 08:03:00,529 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231609255] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:00,529 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226909019] [2021-06-05 08:03:00,529 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 274 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 274 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:00,599 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2021-06-05 08:03:00,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:03:00,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 08:03:00,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:00,784 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:00,785 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226909019] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:00,785 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:00,785 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2021-06-05 08:03:00,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643834494] [2021-06-05 08:03:00,785 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 08:03:00,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:00,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 08:03:00,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=634, Unknown=0, NotChecked=0, Total=812 [2021-06-05 08:03:00,785 INFO L87 Difference]: Start difference. First operand 4883 states and 13847 transitions. Second operand has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:01,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:01,767 INFO L93 Difference]: Finished difference Result 6010 states and 16421 transitions. [2021-06-05 08:03:01,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 08:03:01,767 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-06-05 08:03:01,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:01,773 INFO L225 Difference]: With dead ends: 6010 [2021-06-05 08:03:01,773 INFO L226 Difference]: Without dead ends: 5521 [2021-06-05 08:03:01,774 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1638 ImplicationChecksByTransitivity, 977.3ms TimeCoverageRelationStatistics Valid=1600, Invalid=4562, Unknown=0, NotChecked=0, Total=6162 [2021-06-05 08:03:01,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5521 states. [2021-06-05 08:03:01,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5521 to 4828. [2021-06-05 08:03:01,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4828 states, 4827 states have (on average 2.834679925419515) internal successors, (13683), 4827 states have internal predecessors, (13683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:01,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4828 states to 4828 states and 13683 transitions. [2021-06-05 08:03:01,830 INFO L78 Accepts]: Start accepts. Automaton has 4828 states and 13683 transitions. Word has length 145 [2021-06-05 08:03:01,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:01,830 INFO L482 AbstractCegarLoop]: Abstraction has 4828 states and 13683 transitions. [2021-06-05 08:03:01,831 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:01,831 INFO L276 IsEmpty]: Start isEmpty. Operand 4828 states and 13683 transitions. [2021-06-05 08:03:01,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-06-05 08:03:01,835 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:01,835 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:02,035 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 274 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable278 [2021-06-05 08:03:02,035 INFO L430 AbstractCegarLoop]: === Iteration 280 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:02,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:02,035 INFO L82 PathProgramCache]: Analyzing trace with hash 652101711, now seen corresponding path program 271 times [2021-06-05 08:03:02,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:02,036 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072762509] [2021-06-05 08:03:02,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:02,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:02,318 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:02,318 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:02,318 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072762509] [2021-06-05 08:03:02,318 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072762509] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:02,319 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384320005] [2021-06-05 08:03:02,319 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 275 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 275 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:02,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:02,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 31 conjunts are in the unsatisfiable core [2021-06-05 08:03:02,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:02,599 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:02,600 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384320005] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:02,600 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:02,600 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 33 [2021-06-05 08:03:02,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429446033] [2021-06-05 08:03:02,600 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-05 08:03:02,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:02,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-05 08:03:02,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=819, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 08:03:02,600 INFO L87 Difference]: Start difference. First operand 4828 states and 13683 transitions. Second operand has 33 states, 33 states have (on average 5.454545454545454) internal successors, (180), 33 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:03,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:03,184 INFO L93 Difference]: Finished difference Result 6068 states and 16483 transitions. [2021-06-05 08:03:03,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 08:03:03,185 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.454545454545454) internal successors, (180), 33 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-06-05 08:03:03,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:03,192 INFO L225 Difference]: With dead ends: 6068 [2021-06-05 08:03:03,192 INFO L226 Difference]: Without dead ends: 5734 [2021-06-05 08:03:03,193 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 795 ImplicationChecksByTransitivity, 701.7ms TimeCoverageRelationStatistics Valid=1064, Invalid=2842, Unknown=0, NotChecked=0, Total=3906 [2021-06-05 08:03:03,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5734 states. [2021-06-05 08:03:03,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5734 to 4913. [2021-06-05 08:03:03,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4913 states, 4912 states have (on average 2.8202361563517915) internal successors, (13853), 4912 states have internal predecessors, (13853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:03,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4913 states to 4913 states and 13853 transitions. [2021-06-05 08:03:03,255 INFO L78 Accepts]: Start accepts. Automaton has 4913 states and 13853 transitions. Word has length 150 [2021-06-05 08:03:03,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:03,255 INFO L482 AbstractCegarLoop]: Abstraction has 4913 states and 13853 transitions. [2021-06-05 08:03:03,255 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.454545454545454) internal successors, (180), 33 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:03,255 INFO L276 IsEmpty]: Start isEmpty. Operand 4913 states and 13853 transitions. [2021-06-05 08:03:03,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-06-05 08:03:03,259 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:03,259 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:03,460 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 275 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable279 [2021-06-05 08:03:03,460 INFO L430 AbstractCegarLoop]: === Iteration 281 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:03,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:03,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1417310995, now seen corresponding path program 272 times [2021-06-05 08:03:03,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:03,460 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278069823] [2021-06-05 08:03:03,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:03,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:03,883 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:03,883 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:03,883 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278069823] [2021-06-05 08:03:03,883 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278069823] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:03,883 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033074097] [2021-06-05 08:03:03,883 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 276 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 276 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:03,955 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:03:03,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:03:03,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 08:03:03,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:04,218 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:04,219 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033074097] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:04,219 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:04,219 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2021-06-05 08:03:04,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727253086] [2021-06-05 08:03:04,219 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:03:04,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:04,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:03:04,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=668, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:03:04,219 INFO L87 Difference]: Start difference. First operand 4913 states and 13853 transitions. Second operand has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:04,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:04,769 INFO L93 Difference]: Finished difference Result 7061 states and 18277 transitions. [2021-06-05 08:03:04,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 08:03:04,770 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-06-05 08:03:04,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:04,777 INFO L225 Difference]: With dead ends: 7061 [2021-06-05 08:03:04,777 INFO L226 Difference]: Without dead ends: 6791 [2021-06-05 08:03:04,777 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 553 ImplicationChecksByTransitivity, 789.4ms TimeCoverageRelationStatistics Valid=894, Invalid=2298, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 08:03:04,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6791 states. [2021-06-05 08:03:04,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6791 to 4928. [2021-06-05 08:03:04,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4928 states, 4927 states have (on average 2.817738989242947) internal successors, (13883), 4927 states have internal predecessors, (13883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:04,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4928 states to 4928 states and 13883 transitions. [2021-06-05 08:03:04,838 INFO L78 Accepts]: Start accepts. Automaton has 4928 states and 13883 transitions. Word has length 150 [2021-06-05 08:03:04,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:04,838 INFO L482 AbstractCegarLoop]: Abstraction has 4928 states and 13883 transitions. [2021-06-05 08:03:04,838 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:04,838 INFO L276 IsEmpty]: Start isEmpty. Operand 4928 states and 13883 transitions. [2021-06-05 08:03:04,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-06-05 08:03:04,842 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:04,842 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:05,057 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 276 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable280 [2021-06-05 08:03:05,057 INFO L430 AbstractCegarLoop]: === Iteration 282 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:05,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:05,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1410972189, now seen corresponding path program 273 times [2021-06-05 08:03:05,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:05,057 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481854724] [2021-06-05 08:03:05,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:05,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:05,388 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:05,389 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:05,389 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481854724] [2021-06-05 08:03:05,389 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481854724] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:05,389 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077548613] [2021-06-05 08:03:05,389 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 277 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 277 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:05,481 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2021-06-05 08:03:05,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:03:05,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 08:03:05,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:05,695 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:05,695 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077548613] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:05,695 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:05,695 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2021-06-05 08:03:05,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568805461] [2021-06-05 08:03:05,695 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 08:03:05,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:05,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 08:03:05,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=736, Unknown=0, NotChecked=0, Total=930 [2021-06-05 08:03:05,696 INFO L87 Difference]: Start difference. First operand 4928 states and 13883 transitions. Second operand has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:06,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:06,329 INFO L93 Difference]: Finished difference Result 6946 states and 18047 transitions. [2021-06-05 08:03:06,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 08:03:06,329 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-06-05 08:03:06,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:06,337 INFO L225 Difference]: With dead ends: 6946 [2021-06-05 08:03:06,337 INFO L226 Difference]: Without dead ends: 6676 [2021-06-05 08:03:06,338 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 642 ImplicationChecksByTransitivity, 782.1ms TimeCoverageRelationStatistics Valid=971, Invalid=2689, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 08:03:06,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6676 states. [2021-06-05 08:03:06,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6676 to 4928. [2021-06-05 08:03:06,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4928 states, 4927 states have (on average 2.817738989242947) internal successors, (13883), 4927 states have internal predecessors, (13883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:06,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4928 states to 4928 states and 13883 transitions. [2021-06-05 08:03:06,399 INFO L78 Accepts]: Start accepts. Automaton has 4928 states and 13883 transitions. Word has length 150 [2021-06-05 08:03:06,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:06,399 INFO L482 AbstractCegarLoop]: Abstraction has 4928 states and 13883 transitions. [2021-06-05 08:03:06,399 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:06,399 INFO L276 IsEmpty]: Start isEmpty. Operand 4928 states and 13883 transitions. [2021-06-05 08:03:06,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-06-05 08:03:06,403 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:06,403 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:06,620 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable281,277 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:06,620 INFO L430 AbstractCegarLoop]: === Iteration 283 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:06,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:06,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1546193583, now seen corresponding path program 274 times [2021-06-05 08:03:06,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:06,621 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025152260] [2021-06-05 08:03:06,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:06,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:06,918 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:06,918 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:06,918 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025152260] [2021-06-05 08:03:06,918 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025152260] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:06,918 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233004961] [2021-06-05 08:03:06,918 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 278 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 278 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:06,992 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:03:06,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:03:06,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 08:03:06,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:07,181 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:07,181 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233004961] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:07,181 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:07,181 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2021-06-05 08:03:07,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206657680] [2021-06-05 08:03:07,182 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:03:07,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:07,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:03:07,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=689, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:03:07,182 INFO L87 Difference]: Start difference. First operand 4928 states and 13883 transitions. Second operand has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:07,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:07,777 INFO L93 Difference]: Finished difference Result 6921 states and 17997 transitions. [2021-06-05 08:03:07,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 08:03:07,777 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-06-05 08:03:07,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:07,785 INFO L225 Difference]: With dead ends: 6921 [2021-06-05 08:03:07,785 INFO L226 Difference]: Without dead ends: 6651 [2021-06-05 08:03:07,786 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 632 ImplicationChecksByTransitivity, 684.2ms TimeCoverageRelationStatistics Valid=894, Invalid=2528, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 08:03:07,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6651 states. [2021-06-05 08:03:07,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6651 to 4928. [2021-06-05 08:03:07,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4928 states, 4927 states have (on average 2.817738989242947) internal successors, (13883), 4927 states have internal predecessors, (13883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:07,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4928 states to 4928 states and 13883 transitions. [2021-06-05 08:03:07,851 INFO L78 Accepts]: Start accepts. Automaton has 4928 states and 13883 transitions. Word has length 150 [2021-06-05 08:03:07,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:07,851 INFO L482 AbstractCegarLoop]: Abstraction has 4928 states and 13883 transitions. [2021-06-05 08:03:07,851 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:07,851 INFO L276 IsEmpty]: Start isEmpty. Operand 4928 states and 13883 transitions. [2021-06-05 08:03:07,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-06-05 08:03:07,855 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:07,856 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:08,069 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 278 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable282 [2021-06-05 08:03:08,069 INFO L430 AbstractCegarLoop]: === Iteration 284 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:08,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:08,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1872038945, now seen corresponding path program 275 times [2021-06-05 08:03:08,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:08,069 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576037770] [2021-06-05 08:03:08,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:08,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:08,438 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:08,438 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:08,438 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576037770] [2021-06-05 08:03:08,438 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576037770] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:08,438 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177253605] [2021-06-05 08:03:08,439 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 279 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 279 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:08,513 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2021-06-05 08:03:08,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:03:08,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 08:03:08,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:08,741 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:08,741 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177253605] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:08,741 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:08,741 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2021-06-05 08:03:08,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642706877] [2021-06-05 08:03:08,741 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 08:03:08,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:08,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 08:03:08,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=756, Unknown=0, NotChecked=0, Total=930 [2021-06-05 08:03:08,742 INFO L87 Difference]: Start difference. First operand 4928 states and 13883 transitions. Second operand has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:09,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:09,404 INFO L93 Difference]: Finished difference Result 6871 states and 17897 transitions. [2021-06-05 08:03:09,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 08:03:09,404 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-06-05 08:03:09,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:09,413 INFO L225 Difference]: With dead ends: 6871 [2021-06-05 08:03:09,413 INFO L226 Difference]: Without dead ends: 6601 [2021-06-05 08:03:09,413 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 727 ImplicationChecksByTransitivity, 815.5ms TimeCoverageRelationStatistics Valid=979, Invalid=2927, Unknown=0, NotChecked=0, Total=3906 [2021-06-05 08:03:09,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6601 states. [2021-06-05 08:03:09,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6601 to 4928. [2021-06-05 08:03:09,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4928 states, 4927 states have (on average 2.817738989242947) internal successors, (13883), 4927 states have internal predecessors, (13883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:09,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4928 states to 4928 states and 13883 transitions. [2021-06-05 08:03:09,478 INFO L78 Accepts]: Start accepts. Automaton has 4928 states and 13883 transitions. Word has length 150 [2021-06-05 08:03:09,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:09,478 INFO L482 AbstractCegarLoop]: Abstraction has 4928 states and 13883 transitions. [2021-06-05 08:03:09,478 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:09,478 INFO L276 IsEmpty]: Start isEmpty. Operand 4928 states and 13883 transitions. [2021-06-05 08:03:09,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-06-05 08:03:09,482 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:09,482 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:09,697 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable283,279 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:09,697 INFO L430 AbstractCegarLoop]: === Iteration 285 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:09,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:09,697 INFO L82 PathProgramCache]: Analyzing trace with hash 134712591, now seen corresponding path program 276 times [2021-06-05 08:03:09,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:09,697 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586250022] [2021-06-05 08:03:09,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:09,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:09,992 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:09,992 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:09,992 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586250022] [2021-06-05 08:03:09,992 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586250022] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:09,992 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587371836] [2021-06-05 08:03:09,992 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 280 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 280 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:10,072 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-06-05 08:03:10,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:03:10,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 08:03:10,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:10,287 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:10,287 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587371836] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:10,287 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:10,287 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2021-06-05 08:03:10,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389131110] [2021-06-05 08:03:10,288 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:03:10,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:10,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:03:10,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=706, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:03:10,288 INFO L87 Difference]: Start difference. First operand 4928 states and 13883 transitions. Second operand has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:10,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:10,930 INFO L93 Difference]: Finished difference Result 6821 states and 17797 transitions. [2021-06-05 08:03:10,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 08:03:10,930 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-06-05 08:03:10,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:10,938 INFO L225 Difference]: With dead ends: 6821 [2021-06-05 08:03:10,938 INFO L226 Difference]: Without dead ends: 6551 [2021-06-05 08:03:10,939 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 715 ImplicationChecksByTransitivity, 716.1ms TimeCoverageRelationStatistics Valid=910, Invalid=2750, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 08:03:10,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6551 states. [2021-06-05 08:03:10,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6551 to 4928. [2021-06-05 08:03:10,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4928 states, 4927 states have (on average 2.817738989242947) internal successors, (13883), 4927 states have internal predecessors, (13883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:11,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4928 states to 4928 states and 13883 transitions. [2021-06-05 08:03:11,004 INFO L78 Accepts]: Start accepts. Automaton has 4928 states and 13883 transitions. Word has length 150 [2021-06-05 08:03:11,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:11,004 INFO L482 AbstractCegarLoop]: Abstraction has 4928 states and 13883 transitions. [2021-06-05 08:03:11,004 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:11,004 INFO L276 IsEmpty]: Start isEmpty. Operand 4928 states and 13883 transitions. [2021-06-05 08:03:11,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-06-05 08:03:11,009 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:11,009 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:11,224 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable284,280 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:11,225 INFO L430 AbstractCegarLoop]: === Iteration 286 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:11,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:11,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1499260895, now seen corresponding path program 277 times [2021-06-05 08:03:11,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:11,225 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663350247] [2021-06-05 08:03:11,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:11,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:11,541 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:11,541 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:11,541 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663350247] [2021-06-05 08:03:11,541 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663350247] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:11,541 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327346151] [2021-06-05 08:03:11,541 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 281 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 281 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:11,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:11,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 08:03:11,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:11,802 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:11,802 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327346151] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:11,802 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:11,802 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2021-06-05 08:03:11,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848301699] [2021-06-05 08:03:11,803 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 08:03:11,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:11,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 08:03:11,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=772, Unknown=0, NotChecked=0, Total=930 [2021-06-05 08:03:11,803 INFO L87 Difference]: Start difference. First operand 4928 states and 13883 transitions. Second operand has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:12,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:12,500 INFO L93 Difference]: Finished difference Result 6771 states and 17697 transitions. [2021-06-05 08:03:12,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 08:03:12,501 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-06-05 08:03:12,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:12,507 INFO L225 Difference]: With dead ends: 6771 [2021-06-05 08:03:12,507 INFO L226 Difference]: Without dead ends: 6501 [2021-06-05 08:03:12,508 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 817 ImplicationChecksByTransitivity, 802.4ms TimeCoverageRelationStatistics Valid=1003, Invalid=3157, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 08:03:12,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6501 states. [2021-06-05 08:03:12,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6501 to 4928. [2021-06-05 08:03:12,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4928 states, 4927 states have (on average 2.817738989242947) internal successors, (13883), 4927 states have internal predecessors, (13883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:12,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4928 states to 4928 states and 13883 transitions. [2021-06-05 08:03:12,563 INFO L78 Accepts]: Start accepts. Automaton has 4928 states and 13883 transitions. Word has length 150 [2021-06-05 08:03:12,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:12,563 INFO L482 AbstractCegarLoop]: Abstraction has 4928 states and 13883 transitions. [2021-06-05 08:03:12,563 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:12,563 INFO L276 IsEmpty]: Start isEmpty. Operand 4928 states and 13883 transitions. [2021-06-05 08:03:12,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-06-05 08:03:12,567 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:12,567 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:12,767 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable285,281 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:12,767 INFO L430 AbstractCegarLoop]: === Iteration 287 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:12,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:12,767 INFO L82 PathProgramCache]: Analyzing trace with hash -777971123, now seen corresponding path program 278 times [2021-06-05 08:03:12,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:12,768 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812917567] [2021-06-05 08:03:12,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:12,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:13,029 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:13,029 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:13,029 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812917567] [2021-06-05 08:03:13,029 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812917567] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:13,029 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564087681] [2021-06-05 08:03:13,029 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 282 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 282 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:13,093 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:03:13,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:03:13,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 08:03:13,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:13,273 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:13,274 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564087681] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:13,274 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:13,274 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2021-06-05 08:03:13,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617778155] [2021-06-05 08:03:13,274 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:03:13,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:13,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:03:13,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=719, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:03:13,274 INFO L87 Difference]: Start difference. First operand 4928 states and 13883 transitions. Second operand has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:13,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:13,965 INFO L93 Difference]: Finished difference Result 6721 states and 17597 transitions. [2021-06-05 08:03:13,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 08:03:13,966 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-06-05 08:03:13,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:13,973 INFO L225 Difference]: With dead ends: 6721 [2021-06-05 08:03:13,973 INFO L226 Difference]: Without dead ends: 6451 [2021-06-05 08:03:13,974 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 802 ImplicationChecksByTransitivity, 732.7ms TimeCoverageRelationStatistics Valid=942, Invalid=2964, Unknown=0, NotChecked=0, Total=3906 [2021-06-05 08:03:13,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6451 states. [2021-06-05 08:03:14,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6451 to 4928. [2021-06-05 08:03:14,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4928 states, 4927 states have (on average 2.817738989242947) internal successors, (13883), 4927 states have internal predecessors, (13883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:14,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4928 states to 4928 states and 13883 transitions. [2021-06-05 08:03:14,037 INFO L78 Accepts]: Start accepts. Automaton has 4928 states and 13883 transitions. Word has length 150 [2021-06-05 08:03:14,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:14,037 INFO L482 AbstractCegarLoop]: Abstraction has 4928 states and 13883 transitions. [2021-06-05 08:03:14,037 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:14,037 INFO L276 IsEmpty]: Start isEmpty. Operand 4928 states and 13883 transitions. [2021-06-05 08:03:14,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-06-05 08:03:14,042 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:14,042 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:14,257 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable286,282 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:14,257 INFO L430 AbstractCegarLoop]: === Iteration 288 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:14,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:14,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1676494563, now seen corresponding path program 279 times [2021-06-05 08:03:14,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:14,257 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066135782] [2021-06-05 08:03:14,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:14,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:14,537 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:14,537 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:14,537 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066135782] [2021-06-05 08:03:14,537 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066135782] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:14,537 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214286039] [2021-06-05 08:03:14,537 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 283 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 283 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:14,615 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2021-06-05 08:03:14,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:03:14,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 47 conjunts are in the unsatisfiable core [2021-06-05 08:03:14,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:14,806 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:14,806 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214286039] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:14,806 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:14,807 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2021-06-05 08:03:14,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701155256] [2021-06-05 08:03:14,807 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 08:03:14,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:14,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 08:03:14,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=784, Unknown=0, NotChecked=0, Total=930 [2021-06-05 08:03:14,807 INFO L87 Difference]: Start difference. First operand 4928 states and 13883 transitions. Second operand has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:15,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:15,647 INFO L93 Difference]: Finished difference Result 6671 states and 17497 transitions. [2021-06-05 08:03:15,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 08:03:15,647 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-06-05 08:03:15,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:15,653 INFO L225 Difference]: With dead ends: 6671 [2021-06-05 08:03:15,653 INFO L226 Difference]: Without dead ends: 6401 [2021-06-05 08:03:15,653 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 823 ImplicationChecksByTransitivity, 889.7ms TimeCoverageRelationStatistics Valid=952, Invalid=3208, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 08:03:15,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6401 states. [2021-06-05 08:03:15,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6401 to 4928. [2021-06-05 08:03:15,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4928 states, 4927 states have (on average 2.817738989242947) internal successors, (13883), 4927 states have internal predecessors, (13883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:15,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4928 states to 4928 states and 13883 transitions. [2021-06-05 08:03:15,709 INFO L78 Accepts]: Start accepts. Automaton has 4928 states and 13883 transitions. Word has length 150 [2021-06-05 08:03:15,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:15,709 INFO L482 AbstractCegarLoop]: Abstraction has 4928 states and 13883 transitions. [2021-06-05 08:03:15,709 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:15,709 INFO L276 IsEmpty]: Start isEmpty. Operand 4928 states and 13883 transitions. [2021-06-05 08:03:15,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-06-05 08:03:15,713 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:15,713 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:15,914 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 283 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable287 [2021-06-05 08:03:15,914 INFO L430 AbstractCegarLoop]: === Iteration 289 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:15,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:15,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1003519243, now seen corresponding path program 280 times [2021-06-05 08:03:15,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:15,914 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246540374] [2021-06-05 08:03:15,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:15,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:16,172 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:16,172 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:16,172 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246540374] [2021-06-05 08:03:16,172 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246540374] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:16,172 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917651106] [2021-06-05 08:03:16,172 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 284 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 284 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:16,258 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:03:16,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:03:16,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 08:03:16,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:16,440 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:16,440 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917651106] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:16,440 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:16,440 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2021-06-05 08:03:16,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978563405] [2021-06-05 08:03:16,441 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:03:16,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:16,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:03:16,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=728, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:03:16,441 INFO L87 Difference]: Start difference. First operand 4928 states and 13883 transitions. Second operand has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:17,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:17,193 INFO L93 Difference]: Finished difference Result 6621 states and 17397 transitions. [2021-06-05 08:03:17,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 08:03:17,193 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-06-05 08:03:17,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:17,200 INFO L225 Difference]: With dead ends: 6621 [2021-06-05 08:03:17,200 INFO L226 Difference]: Without dead ends: 6351 [2021-06-05 08:03:17,201 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 893 ImplicationChecksByTransitivity, 727.7ms TimeCoverageRelationStatistics Valid=990, Invalid=3170, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 08:03:17,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6351 states. [2021-06-05 08:03:17,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6351 to 4928. [2021-06-05 08:03:17,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4928 states, 4927 states have (on average 2.817738989242947) internal successors, (13883), 4927 states have internal predecessors, (13883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:17,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4928 states to 4928 states and 13883 transitions. [2021-06-05 08:03:17,260 INFO L78 Accepts]: Start accepts. Automaton has 4928 states and 13883 transitions. Word has length 150 [2021-06-05 08:03:17,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:17,260 INFO L482 AbstractCegarLoop]: Abstraction has 4928 states and 13883 transitions. [2021-06-05 08:03:17,260 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:17,260 INFO L276 IsEmpty]: Start isEmpty. Operand 4928 states and 13883 transitions. [2021-06-05 08:03:17,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-06-05 08:03:17,264 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:17,264 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:17,464 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 284 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable288 [2021-06-05 08:03:17,465 INFO L430 AbstractCegarLoop]: === Iteration 290 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:17,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:17,465 INFO L82 PathProgramCache]: Analyzing trace with hash 623075291, now seen corresponding path program 281 times [2021-06-05 08:03:17,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:17,465 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485956264] [2021-06-05 08:03:17,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:17,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:17,740 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:17,740 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:17,740 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485956264] [2021-06-05 08:03:17,740 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485956264] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:17,740 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676657874] [2021-06-05 08:03:17,740 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 285 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 285 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:17,816 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2021-06-05 08:03:17,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:03:17,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 08:03:17,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:18,069 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:18,069 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676657874] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:18,069 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:18,069 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2021-06-05 08:03:18,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788730658] [2021-06-05 08:03:18,069 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 08:03:18,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:18,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 08:03:18,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=792, Unknown=0, NotChecked=0, Total=930 [2021-06-05 08:03:18,070 INFO L87 Difference]: Start difference. First operand 4928 states and 13883 transitions. Second operand has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:18,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:18,996 INFO L93 Difference]: Finished difference Result 6571 states and 17297 transitions. [2021-06-05 08:03:18,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 08:03:18,996 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-06-05 08:03:18,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:19,003 INFO L225 Difference]: With dead ends: 6571 [2021-06-05 08:03:19,004 INFO L226 Difference]: Without dead ends: 6301 [2021-06-05 08:03:19,004 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1009 ImplicationChecksByTransitivity, 916.8ms TimeCoverageRelationStatistics Valid=1099, Invalid=3593, Unknown=0, NotChecked=0, Total=4692 [2021-06-05 08:03:19,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6301 states. [2021-06-05 08:03:19,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6301 to 4928. [2021-06-05 08:03:19,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4928 states, 4927 states have (on average 2.817738989242947) internal successors, (13883), 4927 states have internal predecessors, (13883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:19,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4928 states to 4928 states and 13883 transitions. [2021-06-05 08:03:19,065 INFO L78 Accepts]: Start accepts. Automaton has 4928 states and 13883 transitions. Word has length 150 [2021-06-05 08:03:19,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:19,065 INFO L482 AbstractCegarLoop]: Abstraction has 4928 states and 13883 transitions. [2021-06-05 08:03:19,065 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:19,065 INFO L276 IsEmpty]: Start isEmpty. Operand 4928 states and 13883 transitions. [2021-06-05 08:03:19,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-06-05 08:03:19,069 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:19,070 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:19,286 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 285 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable289 [2021-06-05 08:03:19,286 INFO L430 AbstractCegarLoop]: === Iteration 291 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:19,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:19,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1247450441, now seen corresponding path program 282 times [2021-06-05 08:03:19,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:19,287 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642444557] [2021-06-05 08:03:19,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:19,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:19,636 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:19,636 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:19,636 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642444557] [2021-06-05 08:03:19,636 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642444557] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:19,636 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824326493] [2021-06-05 08:03:19,636 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 286 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 286 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:19,714 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-06-05 08:03:19,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:03:19,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 08:03:19,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:19,997 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:19,997 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824326493] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:19,997 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:19,997 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2021-06-05 08:03:19,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603199091] [2021-06-05 08:03:20,000 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:03:20,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:20,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:03:20,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=733, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:03:20,001 INFO L87 Difference]: Start difference. First operand 4928 states and 13883 transitions. Second operand has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:20,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:20,874 INFO L93 Difference]: Finished difference Result 6521 states and 17197 transitions. [2021-06-05 08:03:20,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 08:03:20,874 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-06-05 08:03:20,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:20,881 INFO L225 Difference]: With dead ends: 6521 [2021-06-05 08:03:20,882 INFO L226 Difference]: Without dead ends: 6251 [2021-06-05 08:03:20,882 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 988 ImplicationChecksByTransitivity, 972.3ms TimeCoverageRelationStatistics Valid=1054, Invalid=3368, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 08:03:20,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6251 states. [2021-06-05 08:03:20,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6251 to 4928. [2021-06-05 08:03:20,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4928 states, 4927 states have (on average 2.817738989242947) internal successors, (13883), 4927 states have internal predecessors, (13883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:20,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4928 states to 4928 states and 13883 transitions. [2021-06-05 08:03:20,944 INFO L78 Accepts]: Start accepts. Automaton has 4928 states and 13883 transitions. Word has length 150 [2021-06-05 08:03:20,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:20,944 INFO L482 AbstractCegarLoop]: Abstraction has 4928 states and 13883 transitions. [2021-06-05 08:03:20,944 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:20,944 INFO L276 IsEmpty]: Start isEmpty. Operand 4928 states and 13883 transitions. [2021-06-05 08:03:20,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-06-05 08:03:20,948 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:20,948 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:21,158 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable290,286 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:21,159 INFO L430 AbstractCegarLoop]: === Iteration 292 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:21,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:21,159 INFO L82 PathProgramCache]: Analyzing trace with hash 2056502297, now seen corresponding path program 283 times [2021-06-05 08:03:21,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:21,159 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719240771] [2021-06-05 08:03:21,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:21,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:21,424 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:21,424 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:21,424 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719240771] [2021-06-05 08:03:21,424 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719240771] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:21,424 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88713144] [2021-06-05 08:03:21,424 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 287 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 287 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:21,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:21,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 08:03:21,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:21,694 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:21,694 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88713144] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:21,695 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:21,695 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2021-06-05 08:03:21,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452348568] [2021-06-05 08:03:21,695 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 08:03:21,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:21,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 08:03:21,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=796, Unknown=0, NotChecked=0, Total=930 [2021-06-05 08:03:21,697 INFO L87 Difference]: Start difference. First operand 4928 states and 13883 transitions. Second operand has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:22,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:22,804 INFO L93 Difference]: Finished difference Result 6471 states and 17097 transitions. [2021-06-05 08:03:22,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 08:03:22,804 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-06-05 08:03:22,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:22,812 INFO L225 Difference]: With dead ends: 6471 [2021-06-05 08:03:22,812 INFO L226 Difference]: Without dead ends: 6201 [2021-06-05 08:03:22,813 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1111 ImplicationChecksByTransitivity, 1083.1ms TimeCoverageRelationStatistics Valid=1171, Invalid=3799, Unknown=0, NotChecked=0, Total=4970 [2021-06-05 08:03:22,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6201 states. [2021-06-05 08:03:22,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6201 to 4928. [2021-06-05 08:03:22,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4928 states, 4927 states have (on average 2.817738989242947) internal successors, (13883), 4927 states have internal predecessors, (13883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:22,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4928 states to 4928 states and 13883 transitions. [2021-06-05 08:03:22,872 INFO L78 Accepts]: Start accepts. Automaton has 4928 states and 13883 transitions. Word has length 150 [2021-06-05 08:03:22,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:22,872 INFO L482 AbstractCegarLoop]: Abstraction has 4928 states and 13883 transitions. [2021-06-05 08:03:22,872 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:22,873 INFO L276 IsEmpty]: Start isEmpty. Operand 4928 states and 13883 transitions. [2021-06-05 08:03:22,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-06-05 08:03:22,877 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:22,877 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:23,093 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable291,287 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:23,093 INFO L430 AbstractCegarLoop]: === Iteration 293 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:23,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:23,093 INFO L82 PathProgramCache]: Analyzing trace with hash 664552199, now seen corresponding path program 284 times [2021-06-05 08:03:23,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:23,093 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895600232] [2021-06-05 08:03:23,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:23,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:23,606 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:23,607 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:23,607 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895600232] [2021-06-05 08:03:23,607 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895600232] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:23,607 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052746044] [2021-06-05 08:03:23,607 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 288 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 288 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:23,678 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:03:23,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:03:23,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 08:03:23,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:23,900 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:23,900 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052746044] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:23,900 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:23,900 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2021-06-05 08:03:23,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307326087] [2021-06-05 08:03:23,901 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:03:23,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:23,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:03:23,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=734, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:03:23,901 INFO L87 Difference]: Start difference. First operand 4928 states and 13883 transitions. Second operand has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:24,202 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 10 [2021-06-05 08:03:24,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:24,820 INFO L93 Difference]: Finished difference Result 6421 states and 16997 transitions. [2021-06-05 08:03:24,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 08:03:24,820 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-06-05 08:03:24,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:24,828 INFO L225 Difference]: With dead ends: 6421 [2021-06-05 08:03:24,828 INFO L226 Difference]: Without dead ends: 6151 [2021-06-05 08:03:24,828 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1087 ImplicationChecksByTransitivity, 1132.8ms TimeCoverageRelationStatistics Valid=1134, Invalid=3558, Unknown=0, NotChecked=0, Total=4692 [2021-06-05 08:03:24,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6151 states. [2021-06-05 08:03:24,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6151 to 4928. [2021-06-05 08:03:24,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4928 states, 4927 states have (on average 2.817738989242947) internal successors, (13883), 4927 states have internal predecessors, (13883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:24,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4928 states to 4928 states and 13883 transitions. [2021-06-05 08:03:24,892 INFO L78 Accepts]: Start accepts. Automaton has 4928 states and 13883 transitions. Word has length 150 [2021-06-05 08:03:24,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:24,892 INFO L482 AbstractCegarLoop]: Abstraction has 4928 states and 13883 transitions. [2021-06-05 08:03:24,892 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:24,892 INFO L276 IsEmpty]: Start isEmpty. Operand 4928 states and 13883 transitions. [2021-06-05 08:03:24,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-06-05 08:03:24,897 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:24,897 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:25,113 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable292,288 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:25,113 INFO L430 AbstractCegarLoop]: === Iteration 294 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:25,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:25,113 INFO L82 PathProgramCache]: Analyzing trace with hash 419474903, now seen corresponding path program 285 times [2021-06-05 08:03:25,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:25,114 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881694277] [2021-06-05 08:03:25,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:25,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:25,354 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:25,354 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:25,354 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881694277] [2021-06-05 08:03:25,354 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881694277] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:25,354 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107898076] [2021-06-05 08:03:25,355 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 289 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 289 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:25,426 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2021-06-05 08:03:25,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:03:25,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 41 conjunts are in the unsatisfiable core [2021-06-05 08:03:25,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:25,613 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:25,613 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107898076] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:25,613 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:25,613 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2021-06-05 08:03:25,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227801648] [2021-06-05 08:03:25,614 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 08:03:25,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:25,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 08:03:25,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=796, Unknown=0, NotChecked=0, Total=930 [2021-06-05 08:03:25,614 INFO L87 Difference]: Start difference. First operand 4928 states and 13883 transitions. Second operand has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:26,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:26,502 INFO L93 Difference]: Finished difference Result 6371 states and 16897 transitions. [2021-06-05 08:03:26,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 08:03:26,503 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-06-05 08:03:26,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:26,509 INFO L225 Difference]: With dead ends: 6371 [2021-06-05 08:03:26,509 INFO L226 Difference]: Without dead ends: 6101 [2021-06-05 08:03:26,510 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1108 ImplicationChecksByTransitivity, 891.8ms TimeCoverageRelationStatistics Valid=1114, Invalid=3856, Unknown=0, NotChecked=0, Total=4970 [2021-06-05 08:03:26,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6101 states. [2021-06-05 08:03:26,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6101 to 4928. [2021-06-05 08:03:26,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4928 states, 4927 states have (on average 2.817738989242947) internal successors, (13883), 4927 states have internal predecessors, (13883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:26,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4928 states to 4928 states and 13883 transitions. [2021-06-05 08:03:26,566 INFO L78 Accepts]: Start accepts. Automaton has 4928 states and 13883 transitions. Word has length 150 [2021-06-05 08:03:26,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:26,566 INFO L482 AbstractCegarLoop]: Abstraction has 4928 states and 13883 transitions. [2021-06-05 08:03:26,567 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:26,567 INFO L276 IsEmpty]: Start isEmpty. Operand 4928 states and 13883 transitions. [2021-06-05 08:03:26,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-06-05 08:03:26,570 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:26,570 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:26,771 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable293,289 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:26,771 INFO L430 AbstractCegarLoop]: === Iteration 295 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:26,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:26,771 INFO L82 PathProgramCache]: Analyzing trace with hash 42624581, now seen corresponding path program 286 times [2021-06-05 08:03:26,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:26,771 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072848022] [2021-06-05 08:03:26,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:26,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:27,009 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:27,009 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:27,009 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072848022] [2021-06-05 08:03:27,009 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072848022] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:27,009 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802915241] [2021-06-05 08:03:27,009 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 290 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 290 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:27,072 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:03:27,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:03:27,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 08:03:27,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:27,247 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:27,248 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802915241] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:27,248 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:27,248 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2021-06-05 08:03:27,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75132360] [2021-06-05 08:03:27,248 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:03:27,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:27,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:03:27,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=731, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:03:27,248 INFO L87 Difference]: Start difference. First operand 4928 states and 13883 transitions. Second operand has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:28,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:28,023 INFO L93 Difference]: Finished difference Result 6321 states and 16797 transitions. [2021-06-05 08:03:28,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 08:03:28,023 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-06-05 08:03:28,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:28,029 INFO L225 Difference]: With dead ends: 6321 [2021-06-05 08:03:28,030 INFO L226 Difference]: Without dead ends: 6051 [2021-06-05 08:03:28,030 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1190 ImplicationChecksByTransitivity, 785.2ms TimeCoverageRelationStatistics Valid=1230, Invalid=3740, Unknown=0, NotChecked=0, Total=4970 [2021-06-05 08:03:28,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6051 states. [2021-06-05 08:03:28,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6051 to 4928. [2021-06-05 08:03:28,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4928 states, 4927 states have (on average 2.817738989242947) internal successors, (13883), 4927 states have internal predecessors, (13883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:28,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4928 states to 4928 states and 13883 transitions. [2021-06-05 08:03:28,086 INFO L78 Accepts]: Start accepts. Automaton has 4928 states and 13883 transitions. Word has length 150 [2021-06-05 08:03:28,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:28,087 INFO L482 AbstractCegarLoop]: Abstraction has 4928 states and 13883 transitions. [2021-06-05 08:03:28,087 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:28,087 INFO L276 IsEmpty]: Start isEmpty. Operand 4928 states and 13883 transitions. [2021-06-05 08:03:28,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-06-05 08:03:28,091 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:28,091 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:28,291 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable294,290 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:28,291 INFO L430 AbstractCegarLoop]: === Iteration 296 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:28,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:28,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1369380117, now seen corresponding path program 287 times [2021-06-05 08:03:28,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:28,291 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143094104] [2021-06-05 08:03:28,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:28,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:28,546 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:28,547 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:28,547 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143094104] [2021-06-05 08:03:28,547 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143094104] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:28,547 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757483569] [2021-06-05 08:03:28,547 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 291 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 291 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:28,612 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2021-06-05 08:03:28,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:03:28,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 08:03:28,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:28,810 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:28,811 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757483569] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:28,811 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:28,811 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2021-06-05 08:03:28,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447488882] [2021-06-05 08:03:28,811 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 08:03:28,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:28,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 08:03:28,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=792, Unknown=0, NotChecked=0, Total=930 [2021-06-05 08:03:28,811 INFO L87 Difference]: Start difference. First operand 4928 states and 13883 transitions. Second operand has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:29,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:29,828 INFO L93 Difference]: Finished difference Result 6271 states and 16697 transitions. [2021-06-05 08:03:29,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 08:03:29,829 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-06-05 08:03:29,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:29,835 INFO L225 Difference]: With dead ends: 6271 [2021-06-05 08:03:29,835 INFO L226 Difference]: Without dead ends: 6001 [2021-06-05 08:03:29,836 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1327 ImplicationChecksByTransitivity, 1024.1ms TimeCoverageRelationStatistics Valid=1363, Invalid=4187, Unknown=0, NotChecked=0, Total=5550 [2021-06-05 08:03:29,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6001 states. [2021-06-05 08:03:29,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6001 to 4928. [2021-06-05 08:03:29,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4928 states, 4927 states have (on average 2.817738989242947) internal successors, (13883), 4927 states have internal predecessors, (13883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:29,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4928 states to 4928 states and 13883 transitions. [2021-06-05 08:03:29,896 INFO L78 Accepts]: Start accepts. Automaton has 4928 states and 13883 transitions. Word has length 150 [2021-06-05 08:03:29,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:29,896 INFO L482 AbstractCegarLoop]: Abstraction has 4928 states and 13883 transitions. [2021-06-05 08:03:29,896 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:29,896 INFO L276 IsEmpty]: Start isEmpty. Operand 4928 states and 13883 transitions. [2021-06-05 08:03:29,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-06-05 08:03:29,900 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:29,901 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:30,101 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable295,291 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:30,101 INFO L430 AbstractCegarLoop]: === Iteration 297 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:30,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:30,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1823596291, now seen corresponding path program 288 times [2021-06-05 08:03:30,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:30,101 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950409104] [2021-06-05 08:03:30,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:30,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:30,334 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:30,334 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:30,334 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950409104] [2021-06-05 08:03:30,334 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950409104] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:30,334 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813881459] [2021-06-05 08:03:30,334 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 292 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 292 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:30,409 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-06-05 08:03:30,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:03:30,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 08:03:30,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:30,578 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:30,578 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813881459] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:30,578 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:30,578 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2021-06-05 08:03:30,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938847765] [2021-06-05 08:03:30,579 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:03:30,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:30,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:03:30,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=724, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:03:30,579 INFO L87 Difference]: Start difference. First operand 4928 states and 13883 transitions. Second operand has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:31,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:31,423 INFO L93 Difference]: Finished difference Result 6221 states and 16597 transitions. [2021-06-05 08:03:31,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 08:03:31,423 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-06-05 08:03:31,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:31,429 INFO L225 Difference]: With dead ends: 6221 [2021-06-05 08:03:31,429 INFO L226 Difference]: Without dead ends: 5951 [2021-06-05 08:03:31,430 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1297 ImplicationChecksByTransitivity, 831.3ms TimeCoverageRelationStatistics Valid=1342, Invalid=3914, Unknown=0, NotChecked=0, Total=5256 [2021-06-05 08:03:31,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5951 states. [2021-06-05 08:03:31,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5951 to 4928. [2021-06-05 08:03:31,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4928 states, 4927 states have (on average 2.817738989242947) internal successors, (13883), 4927 states have internal predecessors, (13883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:31,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4928 states to 4928 states and 13883 transitions. [2021-06-05 08:03:31,483 INFO L78 Accepts]: Start accepts. Automaton has 4928 states and 13883 transitions. Word has length 150 [2021-06-05 08:03:31,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:31,483 INFO L482 AbstractCegarLoop]: Abstraction has 4928 states and 13883 transitions. [2021-06-05 08:03:31,483 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:31,483 INFO L276 IsEmpty]: Start isEmpty. Operand 4928 states and 13883 transitions. [2021-06-05 08:03:31,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-06-05 08:03:31,487 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:31,487 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:31,687 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable296,292 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:31,687 INFO L430 AbstractCegarLoop]: === Iteration 298 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:31,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:31,688 INFO L82 PathProgramCache]: Analyzing trace with hash -1472474669, now seen corresponding path program 289 times [2021-06-05 08:03:31,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:31,688 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409731955] [2021-06-05 08:03:31,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:31,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:31,925 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:31,925 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:31,925 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409731955] [2021-06-05 08:03:31,925 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409731955] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:31,925 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69845209] [2021-06-05 08:03:31,925 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 293 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 293 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:31,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:31,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 08:03:31,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:32,174 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:32,174 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69845209] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:32,174 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:32,174 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2021-06-05 08:03:32,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378973765] [2021-06-05 08:03:32,175 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 08:03:32,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:32,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 08:03:32,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=784, Unknown=0, NotChecked=0, Total=930 [2021-06-05 08:03:32,175 INFO L87 Difference]: Start difference. First operand 4928 states and 13883 transitions. Second operand has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:33,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:33,216 INFO L93 Difference]: Finished difference Result 6171 states and 16497 transitions. [2021-06-05 08:03:33,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-06-05 08:03:33,216 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-06-05 08:03:33,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:33,222 INFO L225 Difference]: With dead ends: 6171 [2021-06-05 08:03:33,222 INFO L226 Difference]: Without dead ends: 5901 [2021-06-05 08:03:33,223 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1441 ImplicationChecksByTransitivity, 1018.6ms TimeCoverageRelationStatistics Valid=1483, Invalid=4369, Unknown=0, NotChecked=0, Total=5852 [2021-06-05 08:03:33,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5901 states. [2021-06-05 08:03:33,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5901 to 4928. [2021-06-05 08:03:33,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4928 states, 4927 states have (on average 2.817738989242947) internal successors, (13883), 4927 states have internal predecessors, (13883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:33,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4928 states to 4928 states and 13883 transitions. [2021-06-05 08:03:33,279 INFO L78 Accepts]: Start accepts. Automaton has 4928 states and 13883 transitions. Word has length 150 [2021-06-05 08:03:33,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:33,279 INFO L482 AbstractCegarLoop]: Abstraction has 4928 states and 13883 transitions. [2021-06-05 08:03:33,279 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:33,279 INFO L276 IsEmpty]: Start isEmpty. Operand 4928 states and 13883 transitions. [2021-06-05 08:03:33,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-06-05 08:03:33,283 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:33,283 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:33,484 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable297,293 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:33,484 INFO L430 AbstractCegarLoop]: === Iteration 299 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:33,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:33,484 INFO L82 PathProgramCache]: Analyzing trace with hash 943164737, now seen corresponding path program 290 times [2021-06-05 08:03:33,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:33,484 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698493114] [2021-06-05 08:03:33,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:33,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:33,724 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:33,725 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:33,725 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698493114] [2021-06-05 08:03:33,725 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698493114] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:33,725 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387725033] [2021-06-05 08:03:33,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 294 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 294 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:33,789 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:03:33,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:03:33,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 08:03:33,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:33,965 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:33,965 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387725033] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:33,965 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:33,965 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2021-06-05 08:03:33,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787852224] [2021-06-05 08:03:33,965 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:03:33,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:33,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:03:33,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=713, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:03:33,966 INFO L87 Difference]: Start difference. First operand 4928 states and 13883 transitions. Second operand has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:34,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:34,851 INFO L93 Difference]: Finished difference Result 6121 states and 16397 transitions. [2021-06-05 08:03:34,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 08:03:34,851 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-06-05 08:03:34,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:34,857 INFO L225 Difference]: With dead ends: 6121 [2021-06-05 08:03:34,857 INFO L226 Difference]: Without dead ends: 5851 [2021-06-05 08:03:34,857 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1408 ImplicationChecksByTransitivity, 869.0ms TimeCoverageRelationStatistics Valid=1470, Invalid=4080, Unknown=0, NotChecked=0, Total=5550 [2021-06-05 08:03:34,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5851 states. [2021-06-05 08:03:34,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5851 to 4928. [2021-06-05 08:03:34,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4928 states, 4927 states have (on average 2.817738989242947) internal successors, (13883), 4927 states have internal predecessors, (13883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:34,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4928 states to 4928 states and 13883 transitions. [2021-06-05 08:03:34,915 INFO L78 Accepts]: Start accepts. Automaton has 4928 states and 13883 transitions. Word has length 150 [2021-06-05 08:03:34,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:34,915 INFO L482 AbstractCegarLoop]: Abstraction has 4928 states and 13883 transitions. [2021-06-05 08:03:34,915 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:34,915 INFO L276 IsEmpty]: Start isEmpty. Operand 4928 states and 13883 transitions. [2021-06-05 08:03:34,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-06-05 08:03:34,919 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:34,919 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:35,119 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 294 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable298 [2021-06-05 08:03:35,120 INFO L430 AbstractCegarLoop]: === Iteration 300 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:35,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:35,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1321483247, now seen corresponding path program 291 times [2021-06-05 08:03:35,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:35,120 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323525843] [2021-06-05 08:03:35,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:35,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:35,354 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:35,354 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:35,354 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323525843] [2021-06-05 08:03:35,354 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323525843] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:35,354 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921005383] [2021-06-05 08:03:35,354 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 295 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 295 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:35,427 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2021-06-05 08:03:35,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:03:35,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 08:03:35,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:35,696 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:35,697 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921005383] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:35,697 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:35,697 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2021-06-05 08:03:35,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190617939] [2021-06-05 08:03:35,697 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 08:03:35,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:35,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 08:03:35,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=772, Unknown=0, NotChecked=0, Total=930 [2021-06-05 08:03:35,697 INFO L87 Difference]: Start difference. First operand 4928 states and 13883 transitions. Second operand has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:36,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:36,807 INFO L93 Difference]: Finished difference Result 6071 states and 16297 transitions. [2021-06-05 08:03:36,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-06-05 08:03:36,807 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-06-05 08:03:36,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:36,814 INFO L225 Difference]: With dead ends: 6071 [2021-06-05 08:03:36,815 INFO L226 Difference]: Without dead ends: 5801 [2021-06-05 08:03:36,829 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1420 ImplicationChecksByTransitivity, 1056.8ms TimeCoverageRelationStatistics Valid=1393, Invalid=4459, Unknown=0, NotChecked=0, Total=5852 [2021-06-05 08:03:36,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5801 states. [2021-06-05 08:03:36,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5801 to 4928. [2021-06-05 08:03:36,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4928 states, 4927 states have (on average 2.817738989242947) internal successors, (13883), 4927 states have internal predecessors, (13883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:36,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4928 states to 4928 states and 13883 transitions. [2021-06-05 08:03:36,903 INFO L78 Accepts]: Start accepts. Automaton has 4928 states and 13883 transitions. Word has length 150 [2021-06-05 08:03:36,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:36,903 INFO L482 AbstractCegarLoop]: Abstraction has 4928 states and 13883 transitions. [2021-06-05 08:03:36,904 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:36,904 INFO L276 IsEmpty]: Start isEmpty. Operand 4928 states and 13883 transitions. [2021-06-05 08:03:36,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-06-05 08:03:36,908 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:36,908 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:37,125 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable299,295 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:37,125 INFO L430 AbstractCegarLoop]: === Iteration 301 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:37,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:37,125 INFO L82 PathProgramCache]: Analyzing trace with hash -707243777, now seen corresponding path program 292 times [2021-06-05 08:03:37,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:37,125 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055653139] [2021-06-05 08:03:37,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:37,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:37,356 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:37,356 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:37,356 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055653139] [2021-06-05 08:03:37,356 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055653139] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:37,356 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594858282] [2021-06-05 08:03:37,356 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 296 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 296 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:37,441 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:03:37,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:03:37,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 08:03:37,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:37,610 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:37,610 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594858282] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:37,611 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:37,611 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2021-06-05 08:03:37,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424621438] [2021-06-05 08:03:37,611 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:03:37,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:37,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:03:37,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=698, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:03:37,611 INFO L87 Difference]: Start difference. First operand 4928 states and 13883 transitions. Second operand has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:38,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:38,505 INFO L93 Difference]: Finished difference Result 6021 states and 16197 transitions. [2021-06-05 08:03:38,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 08:03:38,505 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-06-05 08:03:38,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:38,511 INFO L225 Difference]: With dead ends: 6021 [2021-06-05 08:03:38,512 INFO L226 Difference]: Without dead ends: 5751 [2021-06-05 08:03:38,512 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1523 ImplicationChecksByTransitivity, 872.6ms TimeCoverageRelationStatistics Valid=1614, Invalid=4238, Unknown=0, NotChecked=0, Total=5852 [2021-06-05 08:03:38,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5751 states. [2021-06-05 08:03:38,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5751 to 4928. [2021-06-05 08:03:38,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4928 states, 4927 states have (on average 2.817738989242947) internal successors, (13883), 4927 states have internal predecessors, (13883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:38,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4928 states to 4928 states and 13883 transitions. [2021-06-05 08:03:38,594 INFO L78 Accepts]: Start accepts. Automaton has 4928 states and 13883 transitions. Word has length 150 [2021-06-05 08:03:38,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:38,595 INFO L482 AbstractCegarLoop]: Abstraction has 4928 states and 13883 transitions. [2021-06-05 08:03:38,595 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:38,595 INFO L276 IsEmpty]: Start isEmpty. Operand 4928 states and 13883 transitions. [2021-06-05 08:03:38,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-06-05 08:03:38,599 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:38,599 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:38,824 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 296 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable300 [2021-06-05 08:03:38,824 INFO L430 AbstractCegarLoop]: === Iteration 302 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:38,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:38,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1872481231, now seen corresponding path program 293 times [2021-06-05 08:03:38,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:38,824 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150134877] [2021-06-05 08:03:38,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:38,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:39,059 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:39,059 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:39,059 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150134877] [2021-06-05 08:03:39,059 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150134877] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:39,059 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606461249] [2021-06-05 08:03:39,059 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 297 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 297 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:39,132 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2021-06-05 08:03:39,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:03:39,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 08:03:39,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:39,318 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:39,319 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606461249] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:39,319 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:39,319 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2021-06-05 08:03:39,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491467497] [2021-06-05 08:03:39,319 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 08:03:39,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:39,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 08:03:39,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=756, Unknown=0, NotChecked=0, Total=930 [2021-06-05 08:03:39,320 INFO L87 Difference]: Start difference. First operand 4928 states and 13883 transitions. Second operand has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:40,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:40,557 INFO L93 Difference]: Finished difference Result 6479 states and 17463 transitions. [2021-06-05 08:03:40,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-06-05 08:03:40,558 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-06-05 08:03:40,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:40,565 INFO L225 Difference]: With dead ends: 6479 [2021-06-05 08:03:40,565 INFO L226 Difference]: Without dead ends: 5856 [2021-06-05 08:03:40,566 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1780 ImplicationChecksByTransitivity, 1173.7ms TimeCoverageRelationStatistics Valid=1794, Invalid=5012, Unknown=0, NotChecked=0, Total=6806 [2021-06-05 08:03:40,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5856 states. [2021-06-05 08:03:40,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5856 to 4838. [2021-06-05 08:03:40,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4838 states, 4837 states have (on average 2.8215836262145957) internal successors, (13648), 4837 states have internal predecessors, (13648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:40,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4838 states to 4838 states and 13648 transitions. [2021-06-05 08:03:40,639 INFO L78 Accepts]: Start accepts. Automaton has 4838 states and 13648 transitions. Word has length 150 [2021-06-05 08:03:40,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:40,639 INFO L482 AbstractCegarLoop]: Abstraction has 4838 states and 13648 transitions. [2021-06-05 08:03:40,639 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:40,639 INFO L276 IsEmpty]: Start isEmpty. Operand 4838 states and 13648 transitions. [2021-06-05 08:03:40,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-06-05 08:03:40,644 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:40,644 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:40,861 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 297 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable301 [2021-06-05 08:03:40,861 INFO L430 AbstractCegarLoop]: === Iteration 303 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:40,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:40,861 INFO L82 PathProgramCache]: Analyzing trace with hash 839833629, now seen corresponding path program 294 times [2021-06-05 08:03:40,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:40,861 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428906458] [2021-06-05 08:03:40,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:40,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:41,093 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:41,093 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:41,093 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428906458] [2021-06-05 08:03:41,093 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428906458] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:41,093 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745975915] [2021-06-05 08:03:41,093 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 298 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 298 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:41,175 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-06-05 08:03:41,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:03:41,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 31 conjunts are in the unsatisfiable core [2021-06-05 08:03:41,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:41,348 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:41,348 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745975915] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:41,348 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:41,348 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2021-06-05 08:03:41,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267200342] [2021-06-05 08:03:41,349 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:03:41,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:41,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:03:41,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=679, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:03:41,349 INFO L87 Difference]: Start difference. First operand 4838 states and 13648 transitions. Second operand has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:42,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:42,370 INFO L93 Difference]: Finished difference Result 6708 states and 18181 transitions. [2021-06-05 08:03:42,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 08:03:42,371 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-06-05 08:03:42,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:42,378 INFO L225 Difference]: With dead ends: 6708 [2021-06-05 08:03:42,378 INFO L226 Difference]: Without dead ends: 6438 [2021-06-05 08:03:42,378 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1641 ImplicationChecksByTransitivity, 980.6ms TimeCoverageRelationStatistics Valid=1775, Invalid=4387, Unknown=0, NotChecked=0, Total=6162 [2021-06-05 08:03:42,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6438 states. [2021-06-05 08:03:42,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6438 to 5018. [2021-06-05 08:03:42,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5018 states, 5017 states have (on average 2.8317719752840342) internal successors, (14207), 5017 states have internal predecessors, (14207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:42,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 14207 transitions. [2021-06-05 08:03:42,441 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 14207 transitions. Word has length 150 [2021-06-05 08:03:42,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:42,441 INFO L482 AbstractCegarLoop]: Abstraction has 5018 states and 14207 transitions. [2021-06-05 08:03:42,441 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:42,441 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 14207 transitions. [2021-06-05 08:03:42,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-06-05 08:03:42,445 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:42,445 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:42,662 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 298 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable302 [2021-06-05 08:03:42,662 INFO L430 AbstractCegarLoop]: === Iteration 304 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:42,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:42,662 INFO L82 PathProgramCache]: Analyzing trace with hash 862176879, now seen corresponding path program 295 times [2021-06-05 08:03:42,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:42,662 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526035908] [2021-06-05 08:03:42,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:42,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:42,893 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:42,893 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:42,893 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526035908] [2021-06-05 08:03:42,893 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526035908] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:42,893 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503396141] [2021-06-05 08:03:42,893 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 299 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 299 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:42,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:42,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 08:03:42,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:43,129 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:43,129 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503396141] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:43,129 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:43,129 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2021-06-05 08:03:43,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978940137] [2021-06-05 08:03:43,129 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:03:43,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:43,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:03:43,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=679, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:03:43,130 INFO L87 Difference]: Start difference. First operand 5018 states and 14207 transitions. Second operand has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:44,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:44,483 INFO L93 Difference]: Finished difference Result 6195 states and 16881 transitions. [2021-06-05 08:03:44,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-05 08:03:44,483 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-06-05 08:03:44,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:44,491 INFO L225 Difference]: With dead ends: 6195 [2021-06-05 08:03:44,491 INFO L226 Difference]: Without dead ends: 5706 [2021-06-05 08:03:44,492 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1761 ImplicationChecksByTransitivity, 1257.1ms TimeCoverageRelationStatistics Valid=1911, Invalid=4731, Unknown=0, NotChecked=0, Total=6642 [2021-06-05 08:03:44,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5706 states. [2021-06-05 08:03:44,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5706 to 3313. [2021-06-05 08:03:44,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3313 states, 3312 states have (on average 2.7409420289855073) internal successors, (9078), 3312 states have internal predecessors, (9078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:44,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3313 states to 3313 states and 9078 transitions. [2021-06-05 08:03:44,541 INFO L78 Accepts]: Start accepts. Automaton has 3313 states and 9078 transitions. Word has length 150 [2021-06-05 08:03:44,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:44,541 INFO L482 AbstractCegarLoop]: Abstraction has 3313 states and 9078 transitions. [2021-06-05 08:03:44,542 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:44,542 INFO L276 IsEmpty]: Start isEmpty. Operand 3313 states and 9078 transitions. [2021-06-05 08:03:44,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-06-05 08:03:44,544 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:44,544 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:44,761 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable303,299 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:44,761 INFO L430 AbstractCegarLoop]: === Iteration 305 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:44,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:44,761 INFO L82 PathProgramCache]: Analyzing trace with hash -652298224, now seen corresponding path program 296 times [2021-06-05 08:03:44,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:44,761 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134460862] [2021-06-05 08:03:44,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:44,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:45,071 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:45,071 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:45,071 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134460862] [2021-06-05 08:03:45,071 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134460862] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:45,071 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550751272] [2021-06-05 08:03:45,071 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 300 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 300 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:45,146 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:03:45,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:03:45,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 31 conjunts are in the unsatisfiable core [2021-06-05 08:03:45,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:45,326 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:45,327 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550751272] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:45,327 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:45,327 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2021-06-05 08:03:45,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331027348] [2021-06-05 08:03:45,327 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:03:45,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:45,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:03:45,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=679, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:03:45,327 INFO L87 Difference]: Start difference. First operand 3313 states and 9078 transitions. Second operand has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:45,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:45,900 INFO L93 Difference]: Finished difference Result 4931 states and 12517 transitions. [2021-06-05 08:03:45,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 08:03:45,900 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2021-06-05 08:03:45,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:45,906 INFO L225 Difference]: With dead ends: 4931 [2021-06-05 08:03:45,906 INFO L226 Difference]: Without dead ends: 4661 [2021-06-05 08:03:45,907 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 648 ImplicationChecksByTransitivity, 684.7ms TimeCoverageRelationStatistics Valid=935, Invalid=2605, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 08:03:45,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4661 states. [2021-06-05 08:03:45,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4661 to 3388. [2021-06-05 08:03:45,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3388 states, 3387 states have (on average 2.746678476527901) internal successors, (9303), 3387 states have internal predecessors, (9303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:45,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3388 states to 3388 states and 9303 transitions. [2021-06-05 08:03:45,952 INFO L78 Accepts]: Start accepts. Automaton has 3388 states and 9303 transitions. Word has length 155 [2021-06-05 08:03:45,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:45,952 INFO L482 AbstractCegarLoop]: Abstraction has 3388 states and 9303 transitions. [2021-06-05 08:03:45,952 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:45,952 INFO L276 IsEmpty]: Start isEmpty. Operand 3388 states and 9303 transitions. [2021-06-05 08:03:45,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-06-05 08:03:45,955 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:45,955 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:46,165 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 300 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable304 [2021-06-05 08:03:46,165 INFO L430 AbstractCegarLoop]: === Iteration 306 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:46,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:46,165 INFO L82 PathProgramCache]: Analyzing trace with hash 814385888, now seen corresponding path program 297 times [2021-06-05 08:03:46,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:46,165 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829521404] [2021-06-05 08:03:46,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:46,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:46,592 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:46,592 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:46,592 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829521404] [2021-06-05 08:03:46,592 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829521404] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:46,592 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871350826] [2021-06-05 08:03:46,592 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 301 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 301 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:46,674 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2021-06-05 08:03:46,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:03:46,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 31 conjunts are in the unsatisfiable core [2021-06-05 08:03:46,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:46,868 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:46,868 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871350826] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:46,868 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:46,868 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2021-06-05 08:03:46,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276784879] [2021-06-05 08:03:46,868 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 08:03:46,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:46,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 08:03:46,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=747, Unknown=0, NotChecked=0, Total=930 [2021-06-05 08:03:46,869 INFO L87 Difference]: Start difference. First operand 3388 states and 9303 transitions. Second operand has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:47,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:47,508 INFO L93 Difference]: Finished difference Result 5551 states and 13832 transitions. [2021-06-05 08:03:47,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 08:03:47,509 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2021-06-05 08:03:47,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:47,515 INFO L225 Difference]: With dead ends: 5551 [2021-06-05 08:03:47,515 INFO L226 Difference]: Without dead ends: 5281 [2021-06-05 08:03:47,516 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 753 ImplicationChecksByTransitivity, 843.0ms TimeCoverageRelationStatistics Valid=997, Invalid=2909, Unknown=0, NotChecked=0, Total=3906 [2021-06-05 08:03:47,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5281 states. [2021-06-05 08:03:47,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5281 to 3463. [2021-06-05 08:03:47,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3463 states, 3462 states have (on average 2.752166377816291) internal successors, (9528), 3462 states have internal predecessors, (9528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:47,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3463 states to 3463 states and 9528 transitions. [2021-06-05 08:03:47,565 INFO L78 Accepts]: Start accepts. Automaton has 3463 states and 9528 transitions. Word has length 155 [2021-06-05 08:03:47,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:47,565 INFO L482 AbstractCegarLoop]: Abstraction has 3463 states and 9528 transitions. [2021-06-05 08:03:47,565 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:47,565 INFO L276 IsEmpty]: Start isEmpty. Operand 3463 states and 9528 transitions. [2021-06-05 08:03:47,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-06-05 08:03:47,569 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:47,569 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:47,785 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable305,301 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:47,785 INFO L430 AbstractCegarLoop]: === Iteration 307 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:47,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:47,785 INFO L82 PathProgramCache]: Analyzing trace with hash 679164494, now seen corresponding path program 298 times [2021-06-05 08:03:47,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:47,785 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591343623] [2021-06-05 08:03:47,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:47,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:48,089 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:48,089 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:48,089 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591343623] [2021-06-05 08:03:48,089 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591343623] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:48,089 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551649578] [2021-06-05 08:03:48,089 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 302 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 302 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:48,162 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:03:48,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:03:48,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 31 conjunts are in the unsatisfiable core [2021-06-05 08:03:48,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:48,352 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:48,352 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551649578] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:48,352 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:48,352 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2021-06-05 08:03:48,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178891476] [2021-06-05 08:03:48,352 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:03:48,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:48,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:03:48,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=698, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:03:48,353 INFO L87 Difference]: Start difference. First operand 3463 states and 9528 transitions. Second operand has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:48,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:48,930 INFO L93 Difference]: Finished difference Result 5581 states and 13967 transitions. [2021-06-05 08:03:48,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 08:03:48,931 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2021-06-05 08:03:48,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:48,937 INFO L225 Difference]: With dead ends: 5581 [2021-06-05 08:03:48,937 INFO L226 Difference]: Without dead ends: 5311 [2021-06-05 08:03:48,937 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 816 ImplicationChecksByTransitivity, 689.9ms TimeCoverageRelationStatistics Valid=991, Invalid=2915, Unknown=0, NotChecked=0, Total=3906 [2021-06-05 08:03:48,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5311 states. [2021-06-05 08:03:48,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5311 to 3538. [2021-06-05 08:03:48,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3538 states, 3537 states have (on average 2.757421543681086) internal successors, (9753), 3537 states have internal predecessors, (9753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:48,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3538 states to 3538 states and 9753 transitions. [2021-06-05 08:03:48,985 INFO L78 Accepts]: Start accepts. Automaton has 3538 states and 9753 transitions. Word has length 155 [2021-06-05 08:03:48,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:48,985 INFO L482 AbstractCegarLoop]: Abstraction has 3538 states and 9753 transitions. [2021-06-05 08:03:48,985 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:48,986 INFO L276 IsEmpty]: Start isEmpty. Operand 3538 states and 9753 transitions. [2021-06-05 08:03:48,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-06-05 08:03:48,989 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:48,989 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:49,197 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable306,302 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:49,197 INFO L430 AbstractCegarLoop]: === Iteration 308 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:49,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:49,197 INFO L82 PathProgramCache]: Analyzing trace with hash -197570274, now seen corresponding path program 299 times [2021-06-05 08:03:49,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:49,197 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985410948] [2021-06-05 08:03:49,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:49,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:49,511 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:49,511 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:49,511 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985410948] [2021-06-05 08:03:49,512 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985410948] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:49,512 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051061449] [2021-06-05 08:03:49,512 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 303 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 303 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:49,582 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2021-06-05 08:03:49,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:03:49,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 31 conjunts are in the unsatisfiable core [2021-06-05 08:03:49,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:49,799 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:49,799 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051061449] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:49,799 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:49,799 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2021-06-05 08:03:49,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668165766] [2021-06-05 08:03:49,799 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 08:03:49,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:49,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 08:03:49,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=765, Unknown=0, NotChecked=0, Total=930 [2021-06-05 08:03:49,800 INFO L87 Difference]: Start difference. First operand 3538 states and 9753 transitions. Second operand has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:50,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:50,617 INFO L93 Difference]: Finished difference Result 5606 states and 14092 transitions. [2021-06-05 08:03:50,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 08:03:50,617 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2021-06-05 08:03:50,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:50,624 INFO L225 Difference]: With dead ends: 5606 [2021-06-05 08:03:50,624 INFO L226 Difference]: Without dead ends: 5336 [2021-06-05 08:03:50,624 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 911.3ms TimeCoverageRelationStatistics Valid=1013, Invalid=3147, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 08:03:50,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5336 states. [2021-06-05 08:03:50,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5336 to 3613. [2021-06-05 08:03:50,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3613 states, 3612 states have (on average 2.762458471760797) internal successors, (9978), 3612 states have internal predecessors, (9978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:50,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3613 states to 3613 states and 9978 transitions. [2021-06-05 08:03:50,673 INFO L78 Accepts]: Start accepts. Automaton has 3613 states and 9978 transitions. Word has length 155 [2021-06-05 08:03:50,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:50,673 INFO L482 AbstractCegarLoop]: Abstraction has 3613 states and 9978 transitions. [2021-06-05 08:03:50,673 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:50,673 INFO L276 IsEmpty]: Start isEmpty. Operand 3613 states and 9978 transitions. [2021-06-05 08:03:50,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-06-05 08:03:50,676 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:50,676 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:50,885 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable307,303 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:50,885 INFO L430 AbstractCegarLoop]: === Iteration 309 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:50,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:50,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1934896628, now seen corresponding path program 300 times [2021-06-05 08:03:50,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:50,885 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332977763] [2021-06-05 08:03:50,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:50,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:51,212 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:51,213 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:51,213 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332977763] [2021-06-05 08:03:51,213 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332977763] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:51,213 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898599441] [2021-06-05 08:03:51,213 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 304 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 304 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:51,301 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-06-05 08:03:51,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:03:51,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 31 conjunts are in the unsatisfiable core [2021-06-05 08:03:51,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:51,478 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:51,478 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898599441] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:51,478 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:51,479 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2021-06-05 08:03:51,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338839853] [2021-06-05 08:03:51,479 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:03:51,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:51,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:03:51,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=713, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:03:51,479 INFO L87 Difference]: Start difference. First operand 3613 states and 9978 transitions. Second operand has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:52,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:52,261 INFO L93 Difference]: Finished difference Result 5631 states and 14217 transitions. [2021-06-05 08:03:52,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 08:03:52,261 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2021-06-05 08:03:52,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:52,267 INFO L225 Difference]: With dead ends: 5631 [2021-06-05 08:03:52,267 INFO L226 Difference]: Without dead ends: 5361 [2021-06-05 08:03:52,268 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 909 ImplicationChecksByTransitivity, 818.4ms TimeCoverageRelationStatistics Valid=1021, Invalid=3139, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 08:03:52,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5361 states. [2021-06-05 08:03:52,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5361 to 3688. [2021-06-05 08:03:52,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3688 states, 3687 states have (on average 2.7672904800650935) internal successors, (10203), 3687 states have internal predecessors, (10203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:52,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3688 states to 3688 states and 10203 transitions. [2021-06-05 08:03:52,318 INFO L78 Accepts]: Start accepts. Automaton has 3688 states and 10203 transitions. Word has length 155 [2021-06-05 08:03:52,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:52,318 INFO L482 AbstractCegarLoop]: Abstraction has 3688 states and 10203 transitions. [2021-06-05 08:03:52,318 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:52,319 INFO L276 IsEmpty]: Start isEmpty. Operand 3688 states and 10203 transitions. [2021-06-05 08:03:52,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-06-05 08:03:52,322 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:52,322 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:52,522 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 304 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable308 [2021-06-05 08:03:52,522 INFO L430 AbstractCegarLoop]: === Iteration 310 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:52,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:52,523 INFO L82 PathProgramCache]: Analyzing trace with hash -570348324, now seen corresponding path program 301 times [2021-06-05 08:03:52,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:52,523 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294506926] [2021-06-05 08:03:52,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:52,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:52,831 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:52,832 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:52,832 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294506926] [2021-06-05 08:03:52,832 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294506926] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:52,832 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297887322] [2021-06-05 08:03:52,832 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 305 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 305 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:52,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:52,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 31 conjunts are in the unsatisfiable core [2021-06-05 08:03:52,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:53,090 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:53,090 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297887322] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:53,090 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:53,090 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2021-06-05 08:03:53,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261455586] [2021-06-05 08:03:53,090 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 08:03:53,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:53,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 08:03:53,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=779, Unknown=0, NotChecked=0, Total=930 [2021-06-05 08:03:53,091 INFO L87 Difference]: Start difference. First operand 3688 states and 10203 transitions. Second operand has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:53,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:53,811 INFO L93 Difference]: Finished difference Result 5656 states and 14342 transitions. [2021-06-05 08:03:53,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 08:03:53,811 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2021-06-05 08:03:53,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:53,817 INFO L225 Difference]: With dead ends: 5656 [2021-06-05 08:03:53,817 INFO L226 Difference]: Without dead ends: 5386 [2021-06-05 08:03:53,818 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 932 ImplicationChecksByTransitivity, 815.2ms TimeCoverageRelationStatistics Valid=1045, Invalid=3377, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 08:03:53,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5386 states. [2021-06-05 08:03:53,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5386 to 3763. [2021-06-05 08:03:53,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3763 states, 3762 states have (on average 2.7719298245614037) internal successors, (10428), 3762 states have internal predecessors, (10428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:53,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3763 states to 3763 states and 10428 transitions. [2021-06-05 08:03:53,884 INFO L78 Accepts]: Start accepts. Automaton has 3763 states and 10428 transitions. Word has length 155 [2021-06-05 08:03:53,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:53,885 INFO L482 AbstractCegarLoop]: Abstraction has 3763 states and 10428 transitions. [2021-06-05 08:03:53,885 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:53,885 INFO L276 IsEmpty]: Start isEmpty. Operand 3763 states and 10428 transitions. [2021-06-05 08:03:53,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-06-05 08:03:53,888 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:53,888 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:54,088 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 305 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable309 [2021-06-05 08:03:54,088 INFO L430 AbstractCegarLoop]: === Iteration 311 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:54,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:54,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1447386954, now seen corresponding path program 302 times [2021-06-05 08:03:54,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:54,089 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053052724] [2021-06-05 08:03:54,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:54,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:54,365 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:54,365 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:54,365 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053052724] [2021-06-05 08:03:54,365 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053052724] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:54,365 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985284190] [2021-06-05 08:03:54,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 306 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 306 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:54,430 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:03:54,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:03:54,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 31 conjunts are in the unsatisfiable core [2021-06-05 08:03:54,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:54,616 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:54,616 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985284190] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:54,616 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:54,616 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2021-06-05 08:03:54,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865811980] [2021-06-05 08:03:54,616 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:03:54,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:54,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:03:54,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=724, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:03:54,617 INFO L87 Difference]: Start difference. First operand 3763 states and 10428 transitions. Second operand has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:55,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:55,326 INFO L93 Difference]: Finished difference Result 5681 states and 14467 transitions. [2021-06-05 08:03:55,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 08:03:55,326 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2021-06-05 08:03:55,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:55,332 INFO L225 Difference]: With dead ends: 5681 [2021-06-05 08:03:55,332 INFO L226 Difference]: Without dead ends: 5411 [2021-06-05 08:03:55,332 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1010 ImplicationChecksByTransitivity, 751.6ms TimeCoverageRelationStatistics Valid=1067, Invalid=3355, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 08:03:55,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5411 states. [2021-06-05 08:03:55,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5411 to 3838. [2021-06-05 08:03:55,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3838 states, 3837 states have (on average 2.776387802971071) internal successors, (10653), 3837 states have internal predecessors, (10653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:55,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3838 states to 3838 states and 10653 transitions. [2021-06-05 08:03:55,379 INFO L78 Accepts]: Start accepts. Automaton has 3838 states and 10653 transitions. Word has length 155 [2021-06-05 08:03:55,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:55,379 INFO L482 AbstractCegarLoop]: Abstraction has 3838 states and 10653 transitions. [2021-06-05 08:03:55,379 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:55,379 INFO L276 IsEmpty]: Start isEmpty. Operand 3838 states and 10653 transitions. [2021-06-05 08:03:55,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-06-05 08:03:55,383 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:55,383 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:55,583 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 306 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable310 [2021-06-05 08:03:55,583 INFO L430 AbstractCegarLoop]: === Iteration 312 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:55,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:55,583 INFO L82 PathProgramCache]: Analyzing trace with hash 548863514, now seen corresponding path program 303 times [2021-06-05 08:03:55,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:55,583 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629065735] [2021-06-05 08:03:55,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:55,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:55,859 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:55,859 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:55,859 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629065735] [2021-06-05 08:03:55,859 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629065735] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:55,859 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205782279] [2021-06-05 08:03:55,859 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 307 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 307 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:55,934 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2021-06-05 08:03:55,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:03:55,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 48 conjunts are in the unsatisfiable core [2021-06-05 08:03:55,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:56,116 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:56,116 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205782279] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:56,116 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:56,116 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2021-06-05 08:03:56,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835214062] [2021-06-05 08:03:56,117 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 08:03:56,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:56,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 08:03:56,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=789, Unknown=0, NotChecked=0, Total=930 [2021-06-05 08:03:56,117 INFO L87 Difference]: Start difference. First operand 3838 states and 10653 transitions. Second operand has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:56,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:56,938 INFO L93 Difference]: Finished difference Result 5706 states and 14592 transitions. [2021-06-05 08:03:56,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 08:03:56,939 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2021-06-05 08:03:56,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:56,945 INFO L225 Difference]: With dead ends: 5706 [2021-06-05 08:03:56,945 INFO L226 Difference]: Without dead ends: 5436 [2021-06-05 08:03:56,946 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1023 ImplicationChecksByTransitivity, 864.0ms TimeCoverageRelationStatistics Valid=1072, Invalid=3620, Unknown=0, NotChecked=0, Total=4692 [2021-06-05 08:03:56,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5436 states. [2021-06-05 08:03:56,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5436 to 3913. [2021-06-05 08:03:56,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3913 states, 3912 states have (on average 2.7806748466257667) internal successors, (10878), 3912 states have internal predecessors, (10878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:56,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3913 states to 3913 states and 10878 transitions. [2021-06-05 08:03:56,997 INFO L78 Accepts]: Start accepts. Automaton has 3913 states and 10878 transitions. Word has length 155 [2021-06-05 08:03:56,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:56,997 INFO L482 AbstractCegarLoop]: Abstraction has 3913 states and 10878 transitions. [2021-06-05 08:03:56,997 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:56,997 INFO L276 IsEmpty]: Start isEmpty. Operand 3913 states and 10878 transitions. [2021-06-05 08:03:57,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-06-05 08:03:57,000 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:57,000 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:57,201 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 307 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable311 [2021-06-05 08:03:57,201 INFO L430 AbstractCegarLoop]: === Iteration 313 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:57,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:57,201 INFO L82 PathProgramCache]: Analyzing trace with hash -1066089976, now seen corresponding path program 304 times [2021-06-05 08:03:57,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:57,201 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413801485] [2021-06-05 08:03:57,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:57,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:57,474 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:57,474 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:57,474 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413801485] [2021-06-05 08:03:57,474 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413801485] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:57,474 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830971795] [2021-06-05 08:03:57,474 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 308 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 308 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:57,538 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:03:57,538 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:03:57,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 31 conjunts are in the unsatisfiable core [2021-06-05 08:03:57,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:57,729 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:57,729 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830971795] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:57,729 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:57,729 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2021-06-05 08:03:57,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337250932] [2021-06-05 08:03:57,730 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:03:57,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:57,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:03:57,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=731, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:03:57,730 INFO L87 Difference]: Start difference. First operand 3913 states and 10878 transitions. Second operand has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:58,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:03:58,431 INFO L93 Difference]: Finished difference Result 5731 states and 14717 transitions. [2021-06-05 08:03:58,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 08:03:58,432 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2021-06-05 08:03:58,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:03:58,438 INFO L225 Difference]: With dead ends: 5731 [2021-06-05 08:03:58,438 INFO L226 Difference]: Without dead ends: 5461 [2021-06-05 08:03:58,438 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1115 ImplicationChecksByTransitivity, 755.2ms TimeCoverageRelationStatistics Valid=1129, Invalid=3563, Unknown=0, NotChecked=0, Total=4692 [2021-06-05 08:03:58,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5461 states. [2021-06-05 08:03:58,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5461 to 3988. [2021-06-05 08:03:58,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3988 states, 3987 states have (on average 2.7848006019563583) internal successors, (11103), 3987 states have internal predecessors, (11103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:58,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3988 states to 3988 states and 11103 transitions. [2021-06-05 08:03:58,490 INFO L78 Accepts]: Start accepts. Automaton has 3988 states and 11103 transitions. Word has length 155 [2021-06-05 08:03:58,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:03:58,490 INFO L482 AbstractCegarLoop]: Abstraction has 3988 states and 11103 transitions. [2021-06-05 08:03:58,490 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:03:58,490 INFO L276 IsEmpty]: Start isEmpty. Operand 3988 states and 11103 transitions. [2021-06-05 08:03:58,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-06-05 08:03:58,494 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:03:58,494 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:03:58,694 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 308 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable312 [2021-06-05 08:03:58,694 INFO L430 AbstractCegarLoop]: === Iteration 314 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:03:58,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:03:58,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1446533928, now seen corresponding path program 305 times [2021-06-05 08:03:58,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:03:58,695 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874914781] [2021-06-05 08:03:58,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:03:58,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:03:58,967 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:58,967 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:03:58,968 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874914781] [2021-06-05 08:03:58,968 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874914781] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:58,968 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540126666] [2021-06-05 08:03:58,968 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 309 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 309 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:03:59,038 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2021-06-05 08:03:59,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:03:59,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 31 conjunts are in the unsatisfiable core [2021-06-05 08:03:59,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:03:59,251 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:03:59,251 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540126666] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:03:59,251 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:03:59,251 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2021-06-05 08:03:59,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237420837] [2021-06-05 08:03:59,252 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 08:03:59,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:03:59,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 08:03:59,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=795, Unknown=0, NotChecked=0, Total=930 [2021-06-05 08:03:59,252 INFO L87 Difference]: Start difference. First operand 3988 states and 11103 transitions. Second operand has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:00,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:00,099 INFO L93 Difference]: Finished difference Result 5756 states and 14842 transitions. [2021-06-05 08:04:00,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 08:04:00,100 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2021-06-05 08:04:00,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:00,105 INFO L225 Difference]: With dead ends: 5756 [2021-06-05 08:04:00,106 INFO L226 Difference]: Without dead ends: 5486 [2021-06-05 08:04:00,106 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1144 ImplicationChecksByTransitivity, 874.1ms TimeCoverageRelationStatistics Valid=1157, Invalid=3813, Unknown=0, NotChecked=0, Total=4970 [2021-06-05 08:04:00,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5486 states. [2021-06-05 08:04:00,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5486 to 4063. [2021-06-05 08:04:00,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4063 states, 4062 states have (on average 2.78877400295421) internal successors, (11328), 4062 states have internal predecessors, (11328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:00,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4063 states to 4063 states and 11328 transitions. [2021-06-05 08:04:00,156 INFO L78 Accepts]: Start accepts. Automaton has 4063 states and 11328 transitions. Word has length 155 [2021-06-05 08:04:00,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:00,157 INFO L482 AbstractCegarLoop]: Abstraction has 4063 states and 11328 transitions. [2021-06-05 08:04:00,157 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:00,157 INFO L276 IsEmpty]: Start isEmpty. Operand 4063 states and 11328 transitions. [2021-06-05 08:04:00,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-06-05 08:04:00,160 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:00,160 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:00,360 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 309 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable313 [2021-06-05 08:04:00,361 INFO L430 AbstractCegarLoop]: === Iteration 315 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:00,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:00,361 INFO L82 PathProgramCache]: Analyzing trace with hash -822158778, now seen corresponding path program 306 times [2021-06-05 08:04:00,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:00,361 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771257694] [2021-06-05 08:04:00,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:00,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:00,616 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:00,617 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:00,617 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771257694] [2021-06-05 08:04:00,617 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771257694] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:00,617 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141691561] [2021-06-05 08:04:00,617 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 310 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 310 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:00,691 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-06-05 08:04:00,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:04:00,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 31 conjunts are in the unsatisfiable core [2021-06-05 08:04:00,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:00,861 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:00,861 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141691561] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:00,861 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:00,861 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2021-06-05 08:04:00,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167546532] [2021-06-05 08:04:00,861 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:04:00,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:00,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:04:00,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=734, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:04:00,862 INFO L87 Difference]: Start difference. First operand 4063 states and 11328 transitions. Second operand has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:01,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:01,633 INFO L93 Difference]: Finished difference Result 5781 states and 14967 transitions. [2021-06-05 08:04:01,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 08:04:01,633 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2021-06-05 08:04:01,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:01,639 INFO L225 Difference]: With dead ends: 5781 [2021-06-05 08:04:01,639 INFO L226 Difference]: Without dead ends: 5511 [2021-06-05 08:04:01,639 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1224 ImplicationChecksByTransitivity, 773.4ms TimeCoverageRelationStatistics Valid=1207, Invalid=3763, Unknown=0, NotChecked=0, Total=4970 [2021-06-05 08:04:01,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5511 states. [2021-06-05 08:04:01,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5511 to 4138. [2021-06-05 08:04:01,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4138 states, 4137 states have (on average 2.792603335750544) internal successors, (11553), 4137 states have internal predecessors, (11553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:01,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4138 states to 4138 states and 11553 transitions. [2021-06-05 08:04:01,693 INFO L78 Accepts]: Start accepts. Automaton has 4138 states and 11553 transitions. Word has length 155 [2021-06-05 08:04:01,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:01,694 INFO L482 AbstractCegarLoop]: Abstraction has 4138 states and 11553 transitions. [2021-06-05 08:04:01,694 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:01,694 INFO L276 IsEmpty]: Start isEmpty. Operand 4138 states and 11553 transitions. [2021-06-05 08:04:01,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-06-05 08:04:01,697 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:01,697 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:01,897 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 310 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable314 [2021-06-05 08:04:01,898 INFO L430 AbstractCegarLoop]: === Iteration 316 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:01,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:01,898 INFO L82 PathProgramCache]: Analyzing trace with hash -13106922, now seen corresponding path program 307 times [2021-06-05 08:04:01,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:01,898 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342508522] [2021-06-05 08:04:01,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:01,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:02,158 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:02,158 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:02,158 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342508522] [2021-06-05 08:04:02,158 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342508522] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:02,158 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305838429] [2021-06-05 08:04:02,158 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 311 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 311 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:02,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:02,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 31 conjunts are in the unsatisfiable core [2021-06-05 08:04:02,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:02,415 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:02,415 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305838429] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:02,415 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:02,415 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2021-06-05 08:04:02,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353454686] [2021-06-05 08:04:02,415 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 08:04:02,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:02,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 08:04:02,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=797, Unknown=0, NotChecked=0, Total=930 [2021-06-05 08:04:02,416 INFO L87 Difference]: Start difference. First operand 4138 states and 11553 transitions. Second operand has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:03,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:03,380 INFO L93 Difference]: Finished difference Result 5806 states and 15092 transitions. [2021-06-05 08:04:03,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-05 08:04:03,380 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2021-06-05 08:04:03,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:03,386 INFO L225 Difference]: With dead ends: 5806 [2021-06-05 08:04:03,386 INFO L226 Difference]: Without dead ends: 5536 [2021-06-05 08:04:03,387 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1256 ImplicationChecksByTransitivity, 924.6ms TimeCoverageRelationStatistics Valid=1237, Invalid=4019, Unknown=0, NotChecked=0, Total=5256 [2021-06-05 08:04:03,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5536 states. [2021-06-05 08:04:03,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5536 to 4213. [2021-06-05 08:04:03,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4213 states, 4212 states have (on average 2.7962962962962963) internal successors, (11778), 4212 states have internal predecessors, (11778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:03,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4213 states to 4213 states and 11778 transitions. [2021-06-05 08:04:03,443 INFO L78 Accepts]: Start accepts. Automaton has 4213 states and 11778 transitions. Word has length 155 [2021-06-05 08:04:03,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:03,443 INFO L482 AbstractCegarLoop]: Abstraction has 4213 states and 11778 transitions. [2021-06-05 08:04:03,443 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:03,443 INFO L276 IsEmpty]: Start isEmpty. Operand 4213 states and 11778 transitions. [2021-06-05 08:04:03,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-06-05 08:04:03,447 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:03,447 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:03,663 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable315,311 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:03,663 INFO L430 AbstractCegarLoop]: === Iteration 317 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:03,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:03,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1405057020, now seen corresponding path program 308 times [2021-06-05 08:04:03,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:03,663 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016725607] [2021-06-05 08:04:03,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:03,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:03,913 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:03,913 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:03,913 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016725607] [2021-06-05 08:04:03,914 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016725607] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:03,914 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990544596] [2021-06-05 08:04:03,914 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 312 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 312 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:03,977 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:04:03,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:04:03,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 31 conjunts are in the unsatisfiable core [2021-06-05 08:04:03,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:04,161 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:04,161 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990544596] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:04,161 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:04,161 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2021-06-05 08:04:04,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831249322] [2021-06-05 08:04:04,161 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:04:04,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:04,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:04:04,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=733, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:04:04,162 INFO L87 Difference]: Start difference. First operand 4213 states and 11778 transitions. Second operand has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:04,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:04,972 INFO L93 Difference]: Finished difference Result 5831 states and 15217 transitions. [2021-06-05 08:04:04,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 08:04:04,972 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2021-06-05 08:04:04,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:04,977 INFO L225 Difference]: With dead ends: 5831 [2021-06-05 08:04:04,977 INFO L226 Difference]: Without dead ends: 5561 [2021-06-05 08:04:04,978 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1337 ImplicationChecksByTransitivity, 809.3ms TimeCoverageRelationStatistics Valid=1301, Invalid=3955, Unknown=0, NotChecked=0, Total=5256 [2021-06-05 08:04:04,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5561 states. [2021-06-05 08:04:05,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5561 to 4288. [2021-06-05 08:04:05,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4288 states, 4287 states have (on average 2.7998600419874036) internal successors, (12003), 4287 states have internal predecessors, (12003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:05,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4288 states to 4288 states and 12003 transitions. [2021-06-05 08:04:05,034 INFO L78 Accepts]: Start accepts. Automaton has 4288 states and 12003 transitions. Word has length 155 [2021-06-05 08:04:05,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:05,034 INFO L482 AbstractCegarLoop]: Abstraction has 4288 states and 12003 transitions. [2021-06-05 08:04:05,035 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:05,035 INFO L276 IsEmpty]: Start isEmpty. Operand 4288 states and 12003 transitions. [2021-06-05 08:04:05,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-06-05 08:04:05,038 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:05,038 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:05,238 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 312 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable316 [2021-06-05 08:04:05,239 INFO L430 AbstractCegarLoop]: === Iteration 318 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:05,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:05,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1650134316, now seen corresponding path program 309 times [2021-06-05 08:04:05,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:05,239 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101107996] [2021-06-05 08:04:05,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:05,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:05,514 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:05,514 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:05,514 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101107996] [2021-06-05 08:04:05,514 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101107996] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:05,514 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070217451] [2021-06-05 08:04:05,515 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 313 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 313 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:05,597 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2021-06-05 08:04:05,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:04:05,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 42 conjunts are in the unsatisfiable core [2021-06-05 08:04:05,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:05,778 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:05,778 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070217451] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:05,778 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:05,778 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2021-06-05 08:04:05,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001609096] [2021-06-05 08:04:05,778 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 08:04:05,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:05,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 08:04:05,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=795, Unknown=0, NotChecked=0, Total=930 [2021-06-05 08:04:05,779 INFO L87 Difference]: Start difference. First operand 4288 states and 12003 transitions. Second operand has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:06,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:06,883 INFO L93 Difference]: Finished difference Result 5856 states and 15342 transitions. [2021-06-05 08:04:06,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 08:04:06,884 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2021-06-05 08:04:06,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:06,890 INFO L225 Difference]: With dead ends: 5856 [2021-06-05 08:04:06,891 INFO L226 Difference]: Without dead ends: 5586 [2021-06-05 08:04:06,891 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1335 ImplicationChecksByTransitivity, 1017.3ms TimeCoverageRelationStatistics Valid=1267, Invalid=4283, Unknown=0, NotChecked=0, Total=5550 [2021-06-05 08:04:06,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5586 states. [2021-06-05 08:04:06,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5586 to 4363. [2021-06-05 08:04:06,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4363 states, 4362 states have (on average 2.8033012379642366) internal successors, (12228), 4362 states have internal predecessors, (12228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:06,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4363 states to 4363 states and 12228 transitions. [2021-06-05 08:04:06,955 INFO L78 Accepts]: Start accepts. Automaton has 4363 states and 12228 transitions. Word has length 155 [2021-06-05 08:04:06,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:06,955 INFO L482 AbstractCegarLoop]: Abstraction has 4363 states and 12228 transitions. [2021-06-05 08:04:06,955 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:06,955 INFO L276 IsEmpty]: Start isEmpty. Operand 4363 states and 12228 transitions. [2021-06-05 08:04:06,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-06-05 08:04:06,959 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:06,959 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:07,176 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable317,313 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:07,177 INFO L430 AbstractCegarLoop]: === Iteration 319 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:07,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:07,177 INFO L82 PathProgramCache]: Analyzing trace with hash -2026984638, now seen corresponding path program 310 times [2021-06-05 08:04:07,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:07,177 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614710989] [2021-06-05 08:04:07,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:07,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:07,465 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:07,465 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:07,465 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614710989] [2021-06-05 08:04:07,465 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614710989] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:07,465 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617602771] [2021-06-05 08:04:07,465 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 314 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 314 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:07,541 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:04:07,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:04:07,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 31 conjunts are in the unsatisfiable core [2021-06-05 08:04:07,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:07,734 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:07,734 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617602771] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:07,734 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:07,734 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2021-06-05 08:04:07,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696229731] [2021-06-05 08:04:07,734 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:04:07,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:07,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:04:07,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=728, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:04:07,735 INFO L87 Difference]: Start difference. First operand 4363 states and 12228 transitions. Second operand has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:08,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:08,711 INFO L93 Difference]: Finished difference Result 5881 states and 15467 transitions. [2021-06-05 08:04:08,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 08:04:08,712 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2021-06-05 08:04:08,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:08,717 INFO L225 Difference]: With dead ends: 5881 [2021-06-05 08:04:08,717 INFO L226 Difference]: Without dead ends: 5611 [2021-06-05 08:04:08,717 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1454 ImplicationChecksByTransitivity, 933.7ms TimeCoverageRelationStatistics Valid=1411, Invalid=4139, Unknown=0, NotChecked=0, Total=5550 [2021-06-05 08:04:08,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5611 states. [2021-06-05 08:04:08,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5611 to 4438. [2021-06-05 08:04:08,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4438 states, 4437 states have (on average 2.8066260987153484) internal successors, (12453), 4437 states have internal predecessors, (12453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:08,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4438 states to 4438 states and 12453 transitions. [2021-06-05 08:04:08,773 INFO L78 Accepts]: Start accepts. Automaton has 4438 states and 12453 transitions. Word has length 155 [2021-06-05 08:04:08,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:08,773 INFO L482 AbstractCegarLoop]: Abstraction has 4438 states and 12453 transitions. [2021-06-05 08:04:08,773 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:08,773 INFO L276 IsEmpty]: Start isEmpty. Operand 4438 states and 12453 transitions. [2021-06-05 08:04:08,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-06-05 08:04:08,777 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:08,777 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:08,977 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 314 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable318 [2021-06-05 08:04:08,978 INFO L430 AbstractCegarLoop]: === Iteration 320 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:08,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:08,978 INFO L82 PathProgramCache]: Analyzing trace with hash -700229102, now seen corresponding path program 311 times [2021-06-05 08:04:08,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:08,978 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210047641] [2021-06-05 08:04:08,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:08,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:09,232 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:09,232 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:09,232 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210047641] [2021-06-05 08:04:09,232 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210047641] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:09,232 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491306308] [2021-06-05 08:04:09,232 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 315 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 315 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:09,298 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2021-06-05 08:04:09,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:04:09,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 31 conjunts are in the unsatisfiable core [2021-06-05 08:04:09,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:09,479 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:09,479 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491306308] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:09,479 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:09,479 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2021-06-05 08:04:09,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659131689] [2021-06-05 08:04:09,479 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 08:04:09,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:09,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 08:04:09,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=789, Unknown=0, NotChecked=0, Total=930 [2021-06-05 08:04:09,480 INFO L87 Difference]: Start difference. First operand 4438 states and 12453 transitions. Second operand has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:10,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:10,518 INFO L93 Difference]: Finished difference Result 5906 states and 15592 transitions. [2021-06-05 08:04:10,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-06-05 08:04:10,519 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2021-06-05 08:04:10,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:10,525 INFO L225 Difference]: With dead ends: 5906 [2021-06-05 08:04:10,525 INFO L226 Difference]: Without dead ends: 5636 [2021-06-05 08:04:10,525 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1492 ImplicationChecksByTransitivity, 1006.7ms TimeCoverageRelationStatistics Valid=1445, Invalid=4407, Unknown=0, NotChecked=0, Total=5852 [2021-06-05 08:04:10,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5636 states. [2021-06-05 08:04:10,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5636 to 4513. [2021-06-05 08:04:10,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4513 states, 4512 states have (on average 2.809840425531915) internal successors, (12678), 4512 states have internal predecessors, (12678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:10,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4513 states to 4513 states and 12678 transitions. [2021-06-05 08:04:10,582 INFO L78 Accepts]: Start accepts. Automaton has 4513 states and 12678 transitions. Word has length 155 [2021-06-05 08:04:10,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:10,582 INFO L482 AbstractCegarLoop]: Abstraction has 4513 states and 12678 transitions. [2021-06-05 08:04:10,582 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:10,583 INFO L276 IsEmpty]: Start isEmpty. Operand 4513 states and 12678 transitions. [2021-06-05 08:04:10,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-06-05 08:04:10,586 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:10,586 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:10,786 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable319,315 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:10,787 INFO L430 AbstractCegarLoop]: === Iteration 321 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:10,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:10,787 INFO L82 PathProgramCache]: Analyzing trace with hash -246012928, now seen corresponding path program 312 times [2021-06-05 08:04:10,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:10,787 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934220777] [2021-06-05 08:04:10,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:10,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:11,051 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:11,052 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:11,052 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934220777] [2021-06-05 08:04:11,052 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934220777] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:11,052 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095507512] [2021-06-05 08:04:11,052 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 316 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 316 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:11,126 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-06-05 08:04:11,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:04:11,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 08:04:11,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:11,287 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:11,287 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095507512] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:11,287 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:11,287 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2021-06-05 08:04:11,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481139421] [2021-06-05 08:04:11,288 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:04:11,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:11,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:04:11,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=719, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:04:11,288 INFO L87 Difference]: Start difference. First operand 4513 states and 12678 transitions. Second operand has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:12,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:12,226 INFO L93 Difference]: Finished difference Result 5931 states and 15717 transitions. [2021-06-05 08:04:12,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 08:04:12,227 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2021-06-05 08:04:12,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:12,233 INFO L225 Difference]: With dead ends: 5931 [2021-06-05 08:04:12,233 INFO L226 Difference]: Without dead ends: 5661 [2021-06-05 08:04:12,233 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1575 ImplicationChecksByTransitivity, 909.1ms TimeCoverageRelationStatistics Valid=1537, Invalid=4315, Unknown=0, NotChecked=0, Total=5852 [2021-06-05 08:04:12,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5661 states. [2021-06-05 08:04:12,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5661 to 4588. [2021-06-05 08:04:12,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4588 states, 4587 states have (on average 2.8129496402877696) internal successors, (12903), 4587 states have internal predecessors, (12903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:12,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4588 states to 4588 states and 12903 transitions. [2021-06-05 08:04:12,303 INFO L78 Accepts]: Start accepts. Automaton has 4588 states and 12903 transitions. Word has length 155 [2021-06-05 08:04:12,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:12,303 INFO L482 AbstractCegarLoop]: Abstraction has 4588 states and 12903 transitions. [2021-06-05 08:04:12,303 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:12,303 INFO L276 IsEmpty]: Start isEmpty. Operand 4588 states and 12903 transitions. [2021-06-05 08:04:12,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-06-05 08:04:12,307 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:12,307 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:12,507 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable320,316 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:12,507 INFO L430 AbstractCegarLoop]: === Iteration 322 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:12,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:12,508 INFO L82 PathProgramCache]: Analyzing trace with hash 752883408, now seen corresponding path program 313 times [2021-06-05 08:04:12,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:12,508 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216590649] [2021-06-05 08:04:12,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:12,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:12,758 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:12,759 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:12,759 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216590649] [2021-06-05 08:04:12,759 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216590649] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:12,759 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403841154] [2021-06-05 08:04:12,759 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 317 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 317 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:12,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:12,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 31 conjunts are in the unsatisfiable core [2021-06-05 08:04:12,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:13,017 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:13,017 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403841154] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:13,018 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:13,018 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2021-06-05 08:04:13,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733549653] [2021-06-05 08:04:13,018 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 08:04:13,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:13,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 08:04:13,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=779, Unknown=0, NotChecked=0, Total=930 [2021-06-05 08:04:13,018 INFO L87 Difference]: Start difference. First operand 4588 states and 12903 transitions. Second operand has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:14,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:14,187 INFO L93 Difference]: Finished difference Result 5956 states and 15842 transitions. [2021-06-05 08:04:14,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-05 08:04:14,187 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2021-06-05 08:04:14,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:14,193 INFO L225 Difference]: With dead ends: 5956 [2021-06-05 08:04:14,193 INFO L226 Difference]: Without dead ends: 5686 [2021-06-05 08:04:14,194 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1616 ImplicationChecksByTransitivity, 1099.6ms TimeCoverageRelationStatistics Valid=1573, Invalid=4589, Unknown=0, NotChecked=0, Total=6162 [2021-06-05 08:04:14,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5686 states. [2021-06-05 08:04:14,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5686 to 4663. [2021-06-05 08:04:14,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4663 states, 4662 states have (on average 2.815958815958816) internal successors, (13128), 4662 states have internal predecessors, (13128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:14,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4663 states to 4663 states and 13128 transitions. [2021-06-05 08:04:14,255 INFO L78 Accepts]: Start accepts. Automaton has 4663 states and 13128 transitions. Word has length 155 [2021-06-05 08:04:14,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:14,255 INFO L482 AbstractCegarLoop]: Abstraction has 4663 states and 13128 transitions. [2021-06-05 08:04:14,255 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:14,255 INFO L276 IsEmpty]: Start isEmpty. Operand 4663 states and 13128 transitions. [2021-06-05 08:04:14,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-06-05 08:04:14,259 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:14,259 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:14,460 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 317 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable321 [2021-06-05 08:04:14,460 INFO L430 AbstractCegarLoop]: === Iteration 323 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:14,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:14,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1126444482, now seen corresponding path program 314 times [2021-06-05 08:04:14,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:14,460 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123159543] [2021-06-05 08:04:14,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:14,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:14,708 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:14,708 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:14,708 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123159543] [2021-06-05 08:04:14,708 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123159543] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:14,708 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865272883] [2021-06-05 08:04:14,708 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 318 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 318 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:14,772 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:04:14,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:04:14,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 31 conjunts are in the unsatisfiable core [2021-06-05 08:04:14,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:14,937 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:14,937 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865272883] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:14,937 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:14,938 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2021-06-05 08:04:14,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226226496] [2021-06-05 08:04:14,938 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:04:14,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:14,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:04:14,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=706, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:04:14,938 INFO L87 Difference]: Start difference. First operand 4663 states and 13128 transitions. Second operand has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:15,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:15,874 INFO L93 Difference]: Finished difference Result 5981 states and 15967 transitions. [2021-06-05 08:04:15,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 08:04:15,875 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2021-06-05 08:04:15,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:15,881 INFO L225 Difference]: With dead ends: 5981 [2021-06-05 08:04:15,881 INFO L226 Difference]: Without dead ends: 5711 [2021-06-05 08:04:15,882 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1700 ImplicationChecksByTransitivity, 890.8ms TimeCoverageRelationStatistics Valid=1679, Invalid=4483, Unknown=0, NotChecked=0, Total=6162 [2021-06-05 08:04:15,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5711 states. [2021-06-05 08:04:15,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5711 to 4738. [2021-06-05 08:04:15,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4738 states, 4737 states have (on average 2.818872704243192) internal successors, (13353), 4737 states have internal predecessors, (13353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:15,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4738 states to 4738 states and 13353 transitions. [2021-06-05 08:04:15,954 INFO L78 Accepts]: Start accepts. Automaton has 4738 states and 13353 transitions. Word has length 155 [2021-06-05 08:04:15,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:15,954 INFO L482 AbstractCegarLoop]: Abstraction has 4738 states and 13353 transitions. [2021-06-05 08:04:15,954 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:15,954 INFO L276 IsEmpty]: Start isEmpty. Operand 4738 states and 13353 transitions. [2021-06-05 08:04:15,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-06-05 08:04:15,958 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:15,958 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:16,159 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 318 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable322 [2021-06-05 08:04:16,159 INFO L430 AbstractCegarLoop]: === Iteration 324 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:16,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:16,159 INFO L82 PathProgramCache]: Analyzing trace with hash 903874830, now seen corresponding path program 315 times [2021-06-05 08:04:16,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:16,159 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286739152] [2021-06-05 08:04:16,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:16,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:16,404 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:16,404 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:16,404 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286739152] [2021-06-05 08:04:16,404 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286739152] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:16,405 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025463742] [2021-06-05 08:04:16,405 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 319 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 319 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:16,478 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2021-06-05 08:04:16,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:04:16,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-05 08:04:16,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:16,654 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:16,654 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025463742] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:16,654 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:16,654 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2021-06-05 08:04:16,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795433022] [2021-06-05 08:04:16,654 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 08:04:16,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:16,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 08:04:16,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=765, Unknown=0, NotChecked=0, Total=930 [2021-06-05 08:04:16,655 INFO L87 Difference]: Start difference. First operand 4738 states and 13353 transitions. Second operand has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:17,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:17,806 INFO L93 Difference]: Finished difference Result 6006 states and 16092 transitions. [2021-06-05 08:04:17,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-05 08:04:17,806 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2021-06-05 08:04:17,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:17,813 INFO L225 Difference]: With dead ends: 6006 [2021-06-05 08:04:17,813 INFO L226 Difference]: Without dead ends: 5736 [2021-06-05 08:04:17,814 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1674 ImplicationChecksByTransitivity, 1101.9ms TimeCoverageRelationStatistics Valid=1579, Invalid=4901, Unknown=0, NotChecked=0, Total=6480 [2021-06-05 08:04:17,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5736 states. [2021-06-05 08:04:17,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5736 to 4813. [2021-06-05 08:04:17,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4813 states, 4812 states have (on average 2.821695760598504) internal successors, (13578), 4812 states have internal predecessors, (13578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:17,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4813 states to 4813 states and 13578 transitions. [2021-06-05 08:04:17,881 INFO L78 Accepts]: Start accepts. Automaton has 4813 states and 13578 transitions. Word has length 155 [2021-06-05 08:04:17,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:17,882 INFO L482 AbstractCegarLoop]: Abstraction has 4813 states and 13578 transitions. [2021-06-05 08:04:17,882 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:17,882 INFO L276 IsEmpty]: Start isEmpty. Operand 4813 states and 13578 transitions. [2021-06-05 08:04:17,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-06-05 08:04:17,886 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:17,886 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:18,102 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 319 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable323 [2021-06-05 08:04:18,103 INFO L430 AbstractCegarLoop]: === Iteration 325 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:18,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:18,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1518114300, now seen corresponding path program 316 times [2021-06-05 08:04:18,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:18,103 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631248180] [2021-06-05 08:04:18,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:18,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:18,349 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:18,349 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:18,349 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631248180] [2021-06-05 08:04:18,349 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631248180] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:18,349 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283579985] [2021-06-05 08:04:18,349 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 320 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 320 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:18,445 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:04:18,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:04:18,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 31 conjunts are in the unsatisfiable core [2021-06-05 08:04:18,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:18,635 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:18,635 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283579985] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:18,635 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:18,635 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2021-06-05 08:04:18,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379391879] [2021-06-05 08:04:18,636 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:04:18,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:18,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:04:18,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=689, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:04:18,636 INFO L87 Difference]: Start difference. First operand 4813 states and 13578 transitions. Second operand has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:19,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:19,663 INFO L93 Difference]: Finished difference Result 6031 states and 16217 transitions. [2021-06-05 08:04:19,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-05 08:04:19,663 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2021-06-05 08:04:19,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:19,670 INFO L225 Difference]: With dead ends: 6031 [2021-06-05 08:04:19,671 INFO L226 Difference]: Without dead ends: 5761 [2021-06-05 08:04:19,671 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1829 ImplicationChecksByTransitivity, 971.9ms TimeCoverageRelationStatistics Valid=1837, Invalid=4643, Unknown=0, NotChecked=0, Total=6480 [2021-06-05 08:04:19,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5761 states. [2021-06-05 08:04:19,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5761 to 4888. [2021-06-05 08:04:19,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4888 states, 4887 states have (on average 2.824432166973603) internal successors, (13803), 4887 states have internal predecessors, (13803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:19,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4888 states to 4888 states and 13803 transitions. [2021-06-05 08:04:19,768 INFO L78 Accepts]: Start accepts. Automaton has 4888 states and 13803 transitions. Word has length 155 [2021-06-05 08:04:19,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:19,768 INFO L482 AbstractCegarLoop]: Abstraction has 4888 states and 13803 transitions. [2021-06-05 08:04:19,768 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:19,768 INFO L276 IsEmpty]: Start isEmpty. Operand 4888 states and 13803 transitions. [2021-06-05 08:04:19,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-06-05 08:04:19,772 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:19,772 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:19,989 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 320 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable324 [2021-06-05 08:04:19,989 INFO L430 AbstractCegarLoop]: === Iteration 326 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:19,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:19,989 INFO L82 PathProgramCache]: Analyzing trace with hash -197127988, now seen corresponding path program 317 times [2021-06-05 08:04:19,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:19,989 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350906886] [2021-06-05 08:04:19,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:19,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:20,275 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:20,275 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:20,275 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350906886] [2021-06-05 08:04:20,276 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350906886] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:20,276 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896523271] [2021-06-05 08:04:20,276 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 321 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 321 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:20,368 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2021-06-05 08:04:20,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:04:20,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 31 conjunts are in the unsatisfiable core [2021-06-05 08:04:20,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:20,542 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:20,542 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896523271] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:20,542 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:20,543 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2021-06-05 08:04:20,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917201728] [2021-06-05 08:04:20,543 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 08:04:20,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:20,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 08:04:20,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=747, Unknown=0, NotChecked=0, Total=930 [2021-06-05 08:04:20,543 INFO L87 Difference]: Start difference. First operand 4888 states and 13803 transitions. Second operand has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:21,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:21,851 INFO L93 Difference]: Finished difference Result 6116 states and 16507 transitions. [2021-06-05 08:04:21,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-06-05 08:04:21,851 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2021-06-05 08:04:21,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:21,858 INFO L225 Difference]: With dead ends: 6116 [2021-06-05 08:04:21,858 INFO L226 Difference]: Without dead ends: 5846 [2021-06-05 08:04:21,859 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1876 ImplicationChecksByTransitivity, 1264.8ms TimeCoverageRelationStatistics Valid=1877, Invalid=4929, Unknown=0, NotChecked=0, Total=6806 [2021-06-05 08:04:21,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5846 states. [2021-06-05 08:04:21,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5846 to 4963. [2021-06-05 08:04:21,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4963 states, 4962 states have (on average 2.8311164852881903) internal successors, (14048), 4962 states have internal predecessors, (14048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:21,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4963 states to 4963 states and 14048 transitions. [2021-06-05 08:04:21,925 INFO L78 Accepts]: Start accepts. Automaton has 4963 states and 14048 transitions. Word has length 155 [2021-06-05 08:04:21,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:21,925 INFO L482 AbstractCegarLoop]: Abstraction has 4963 states and 14048 transitions. [2021-06-05 08:04:21,926 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:21,926 INFO L276 IsEmpty]: Start isEmpty. Operand 4963 states and 14048 transitions. [2021-06-05 08:04:21,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-06-05 08:04:21,930 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:21,930 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:22,147 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable325,321 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:22,148 INFO L430 AbstractCegarLoop]: === Iteration 327 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:22,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:22,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1229775590, now seen corresponding path program 318 times [2021-06-05 08:04:22,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:22,148 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184656882] [2021-06-05 08:04:22,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:22,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:22,398 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:22,399 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:22,399 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184656882] [2021-06-05 08:04:22,399 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184656882] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:22,399 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509604021] [2021-06-05 08:04:22,399 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 322 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 322 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:22,481 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-06-05 08:04:22,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:04:22,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 08:04:22,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:22,642 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:22,642 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509604021] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:22,642 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:22,642 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2021-06-05 08:04:22,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817406103] [2021-06-05 08:04:22,643 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-05 08:04:22,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:22,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-05 08:04:22,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=668, Unknown=0, NotChecked=0, Total=870 [2021-06-05 08:04:22,643 INFO L87 Difference]: Start difference. First operand 4963 states and 14048 transitions. Second operand has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:23,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:23,657 INFO L93 Difference]: Finished difference Result 6858 states and 18631 transitions. [2021-06-05 08:04:23,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-05 08:04:23,658 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2021-06-05 08:04:23,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:23,665 INFO L225 Difference]: With dead ends: 6858 [2021-06-05 08:04:23,666 INFO L226 Difference]: Without dead ends: 6588 [2021-06-05 08:04:23,666 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1961 ImplicationChecksByTransitivity, 983.0ms TimeCoverageRelationStatistics Valid=2012, Invalid=4794, Unknown=0, NotChecked=0, Total=6806 [2021-06-05 08:04:23,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6588 states. [2021-06-05 08:04:23,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6588 to 5143. [2021-06-05 08:04:23,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5143 states, 5142 states have (on average 2.8407234539089847) internal successors, (14607), 5142 states have internal predecessors, (14607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:23,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5143 states to 5143 states and 14607 transitions. [2021-06-05 08:04:23,731 INFO L78 Accepts]: Start accepts. Automaton has 5143 states and 14607 transitions. Word has length 155 [2021-06-05 08:04:23,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:23,731 INFO L482 AbstractCegarLoop]: Abstraction has 5143 states and 14607 transitions. [2021-06-05 08:04:23,731 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.166666666666667) internal successors, (155), 30 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:23,731 INFO L276 IsEmpty]: Start isEmpty. Operand 5143 states and 14607 transitions. [2021-06-05 08:04:23,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-06-05 08:04:23,735 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:23,735 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:23,936 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 322 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable326 [2021-06-05 08:04:23,936 INFO L430 AbstractCegarLoop]: === Iteration 328 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:23,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:23,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1207432340, now seen corresponding path program 319 times [2021-06-05 08:04:23,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:23,936 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261883806] [2021-06-05 08:04:23,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:23,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:24,190 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:24,190 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:24,190 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261883806] [2021-06-05 08:04:24,190 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261883806] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:24,190 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523148747] [2021-06-05 08:04:24,190 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 323 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 323 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:24,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:24,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 31 conjunts are in the unsatisfiable core [2021-06-05 08:04:24,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:24,434 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:24,434 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523148747] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:24,434 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:24,434 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2021-06-05 08:04:24,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743514530] [2021-06-05 08:04:24,434 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 08:04:24,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:24,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 08:04:24,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=725, Unknown=0, NotChecked=0, Total=930 [2021-06-05 08:04:24,435 INFO L87 Difference]: Start difference. First operand 5143 states and 14607 transitions. Second operand has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:25,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:25,819 INFO L93 Difference]: Finished difference Result 6320 states and 17281 transitions. [2021-06-05 08:04:25,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-05 08:04:25,820 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2021-06-05 08:04:25,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:25,827 INFO L225 Difference]: With dead ends: 6320 [2021-06-05 08:04:25,827 INFO L226 Difference]: Without dead ends: 5831 [2021-06-05 08:04:25,828 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2012 ImplicationChecksByTransitivity, 1324.0ms TimeCoverageRelationStatistics Valid=2056, Invalid=5084, Unknown=0, NotChecked=0, Total=7140 [2021-06-05 08:04:25,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5831 states. [2021-06-05 08:04:25,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5831 to 3234. [2021-06-05 08:04:25,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3234 states, 3233 states have (on average 2.74234457160532) internal successors, (8866), 3233 states have internal predecessors, (8866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:25,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3234 states to 3234 states and 8866 transitions. [2021-06-05 08:04:25,877 INFO L78 Accepts]: Start accepts. Automaton has 3234 states and 8866 transitions. Word has length 155 [2021-06-05 08:04:25,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:25,877 INFO L482 AbstractCegarLoop]: Abstraction has 3234 states and 8866 transitions. [2021-06-05 08:04:25,877 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:25,878 INFO L276 IsEmpty]: Start isEmpty. Operand 3234 states and 8866 transitions. [2021-06-05 08:04:25,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-06-05 08:04:25,880 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:25,880 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:26,096 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable327,323 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:26,097 INFO L430 AbstractCegarLoop]: === Iteration 329 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:26,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:26,097 INFO L82 PathProgramCache]: Analyzing trace with hash -998997856, now seen corresponding path program 320 times [2021-06-05 08:04:26,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:26,097 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710755996] [2021-06-05 08:04:26,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:26,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:26,429 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:26,429 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:26,429 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710755996] [2021-06-05 08:04:26,429 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710755996] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:26,429 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477012497] [2021-06-05 08:04:26,429 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 324 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 324 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:26,502 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:04:26,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:04:26,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 33 conjunts are in the unsatisfiable core [2021-06-05 08:04:26,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:26,742 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:26,742 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477012497] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:26,742 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:26,742 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 34 [2021-06-05 08:04:26,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052533432] [2021-06-05 08:04:26,742 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-06-05 08:04:26,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:26,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-06-05 08:04:26,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=870, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 08:04:26,743 INFO L87 Difference]: Start difference. First operand 3234 states and 8866 transitions. Second operand has 34 states, 34 states have (on average 5.529411764705882) internal successors, (188), 34 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:27,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:27,420 INFO L93 Difference]: Finished difference Result 4524 states and 11766 transitions. [2021-06-05 08:04:27,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 08:04:27,421 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.529411764705882) internal successors, (188), 34 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-06-05 08:04:27,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:27,425 INFO L225 Difference]: With dead ends: 4524 [2021-06-05 08:04:27,425 INFO L226 Difference]: Without dead ends: 4190 [2021-06-05 08:04:27,425 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 876 ImplicationChecksByTransitivity, 814.5ms TimeCoverageRelationStatistics Valid=1165, Invalid=3125, Unknown=0, NotChecked=0, Total=4290 [2021-06-05 08:04:27,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4190 states. [2021-06-05 08:04:27,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4190 to 3319. [2021-06-05 08:04:27,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3319 states, 3318 states have (on average 2.7233273056057867) internal successors, (9036), 3318 states have internal predecessors, (9036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:27,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3319 states to 3319 states and 9036 transitions. [2021-06-05 08:04:27,462 INFO L78 Accepts]: Start accepts. Automaton has 3319 states and 9036 transitions. Word has length 160 [2021-06-05 08:04:27,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:27,463 INFO L482 AbstractCegarLoop]: Abstraction has 3319 states and 9036 transitions. [2021-06-05 08:04:27,463 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 5.529411764705882) internal successors, (188), 34 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:27,463 INFO L276 IsEmpty]: Start isEmpty. Operand 3319 states and 9036 transitions. [2021-06-05 08:04:27,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-06-05 08:04:27,465 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:27,465 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:27,681 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 324 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable328 [2021-06-05 08:04:27,681 INFO L430 AbstractCegarLoop]: === Iteration 330 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:27,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:27,681 INFO L82 PathProgramCache]: Analyzing trace with hash 595396196, now seen corresponding path program 321 times [2021-06-05 08:04:27,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:27,681 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317172033] [2021-06-05 08:04:27,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:27,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:28,014 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:28,014 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:28,014 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317172033] [2021-06-05 08:04:28,014 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317172033] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:28,014 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811029954] [2021-06-05 08:04:28,014 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 325 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 325 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:28,097 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2021-06-05 08:04:28,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:04:28,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 08:04:28,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:28,284 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:28,284 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811029954] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:28,284 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:28,284 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2021-06-05 08:04:28,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646134381] [2021-06-05 08:04:28,285 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 08:04:28,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:28,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 08:04:28,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=714, Unknown=0, NotChecked=0, Total=930 [2021-06-05 08:04:28,285 INFO L87 Difference]: Start difference. First operand 3319 states and 9036 transitions. Second operand has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:28,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:28,822 INFO L93 Difference]: Finished difference Result 5746 states and 14147 transitions. [2021-06-05 08:04:28,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 08:04:28,823 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-06-05 08:04:28,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:28,829 INFO L225 Difference]: With dead ends: 5746 [2021-06-05 08:04:28,829 INFO L226 Difference]: Without dead ends: 5476 [2021-06-05 08:04:28,830 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 624 ImplicationChecksByTransitivity, 687.1ms TimeCoverageRelationStatistics Valid=988, Invalid=2552, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 08:04:28,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5476 states. [2021-06-05 08:04:28,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5476 to 3463. [2021-06-05 08:04:28,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3463 states, 3462 states have (on average 2.7305025996533794) internal successors, (9453), 3462 states have internal predecessors, (9453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:28,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3463 states to 3463 states and 9453 transitions. [2021-06-05 08:04:28,878 INFO L78 Accepts]: Start accepts. Automaton has 3463 states and 9453 transitions. Word has length 160 [2021-06-05 08:04:28,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:28,879 INFO L482 AbstractCegarLoop]: Abstraction has 3463 states and 9453 transitions. [2021-06-05 08:04:28,879 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:28,879 INFO L276 IsEmpty]: Start isEmpty. Operand 3463 states and 9453 transitions. [2021-06-05 08:04:28,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-06-05 08:04:28,882 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:28,882 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:29,082 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable329,325 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:29,082 INFO L430 AbstractCegarLoop]: === Iteration 331 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:29,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:29,083 INFO L82 PathProgramCache]: Analyzing trace with hash 94082356, now seen corresponding path program 322 times [2021-06-05 08:04:29,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:29,083 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957171687] [2021-06-05 08:04:29,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:29,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:29,451 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:29,451 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:29,451 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957171687] [2021-06-05 08:04:29,451 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957171687] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:29,451 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734464541] [2021-06-05 08:04:29,451 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 326 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 326 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:29,541 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:04:29,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:04:29,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 08:04:29,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:29,742 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:29,742 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734464541] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:29,742 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:29,742 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2021-06-05 08:04:29,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787641761] [2021-06-05 08:04:29,742 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-06-05 08:04:29,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:29,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-06-05 08:04:29,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=785, Unknown=0, NotChecked=0, Total=992 [2021-06-05 08:04:29,743 INFO L87 Difference]: Start difference. First operand 3463 states and 9453 transitions. Second operand has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:30,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:30,370 INFO L93 Difference]: Finished difference Result 5706 states and 14142 transitions. [2021-06-05 08:04:30,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 08:04:30,371 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-06-05 08:04:30,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:30,377 INFO L225 Difference]: With dead ends: 5706 [2021-06-05 08:04:30,377 INFO L226 Difference]: Without dead ends: 5436 [2021-06-05 08:04:30,378 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 720 ImplicationChecksByTransitivity, 794.3ms TimeCoverageRelationStatistics Valid=1067, Invalid=2965, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 08:04:30,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5436 states. [2021-06-05 08:04:30,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5436 to 3538. [2021-06-05 08:04:30,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3538 states, 3537 states have (on average 2.736217133163698) internal successors, (9678), 3537 states have internal predecessors, (9678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:30,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3538 states to 3538 states and 9678 transitions. [2021-06-05 08:04:30,429 INFO L78 Accepts]: Start accepts. Automaton has 3538 states and 9678 transitions. Word has length 160 [2021-06-05 08:04:30,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:30,429 INFO L482 AbstractCegarLoop]: Abstraction has 3538 states and 9678 transitions. [2021-06-05 08:04:30,430 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:30,430 INFO L276 IsEmpty]: Start isEmpty. Operand 3538 states and 9678 transitions. [2021-06-05 08:04:30,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-06-05 08:04:30,433 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:30,433 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:30,637 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 326 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable330 [2021-06-05 08:04:30,638 INFO L430 AbstractCegarLoop]: === Iteration 332 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:30,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:30,638 INFO L82 PathProgramCache]: Analyzing trace with hash 570577698, now seen corresponding path program 323 times [2021-06-05 08:04:30,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:30,638 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148194880] [2021-06-05 08:04:30,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:30,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:30,960 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:30,961 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:30,961 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148194880] [2021-06-05 08:04:30,961 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148194880] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:30,961 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790471352] [2021-06-05 08:04:30,961 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 327 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 327 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:31,050 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2021-06-05 08:04:31,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:04:31,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 08:04:31,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:31,297 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:31,297 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790471352] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:31,297 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:31,297 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2021-06-05 08:04:31,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401327299] [2021-06-05 08:04:31,297 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 08:04:31,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:31,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 08:04:31,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=736, Unknown=0, NotChecked=0, Total=930 [2021-06-05 08:04:31,298 INFO L87 Difference]: Start difference. First operand 3538 states and 9678 transitions. Second operand has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:31,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:31,871 INFO L93 Difference]: Finished difference Result 5756 states and 14317 transitions. [2021-06-05 08:04:31,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 08:04:31,872 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-06-05 08:04:31,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:31,877 INFO L225 Difference]: With dead ends: 5756 [2021-06-05 08:04:31,878 INFO L226 Difference]: Without dead ends: 5486 [2021-06-05 08:04:31,878 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 706 ImplicationChecksByTransitivity, 696.1ms TimeCoverageRelationStatistics Valid=987, Invalid=2795, Unknown=0, NotChecked=0, Total=3782 [2021-06-05 08:04:31,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5486 states. [2021-06-05 08:04:31,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5486 to 3613. [2021-06-05 08:04:31,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3613 states, 3612 states have (on average 2.7416943521594686) internal successors, (9903), 3612 states have internal predecessors, (9903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:31,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3613 states to 3613 states and 9903 transitions. [2021-06-05 08:04:31,925 INFO L78 Accepts]: Start accepts. Automaton has 3613 states and 9903 transitions. Word has length 160 [2021-06-05 08:04:31,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:31,925 INFO L482 AbstractCegarLoop]: Abstraction has 3613 states and 9903 transitions. [2021-06-05 08:04:31,925 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:31,925 INFO L276 IsEmpty]: Start isEmpty. Operand 3613 states and 9903 transitions. [2021-06-05 08:04:31,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-06-05 08:04:31,929 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:31,929 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:32,145 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 327 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable331 [2021-06-05 08:04:32,145 INFO L430 AbstractCegarLoop]: === Iteration 333 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:32,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:32,145 INFO L82 PathProgramCache]: Analyzing trace with hash 2037261810, now seen corresponding path program 324 times [2021-06-05 08:04:32,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:32,145 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997750095] [2021-06-05 08:04:32,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:32,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:32,484 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:32,484 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:32,484 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997750095] [2021-06-05 08:04:32,484 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997750095] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:32,484 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900953669] [2021-06-05 08:04:32,484 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 328 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 328 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:32,568 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2021-06-05 08:04:32,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:04:32,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 08:04:32,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:32,770 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:32,770 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900953669] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:32,770 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:32,770 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2021-06-05 08:04:32,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465534464] [2021-06-05 08:04:32,770 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-06-05 08:04:32,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:32,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-06-05 08:04:32,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=806, Unknown=0, NotChecked=0, Total=992 [2021-06-05 08:04:32,771 INFO L87 Difference]: Start difference. First operand 3613 states and 9903 transitions. Second operand has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:33,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:33,498 INFO L93 Difference]: Finished difference Result 5781 states and 14442 transitions. [2021-06-05 08:04:33,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 08:04:33,498 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-06-05 08:04:33,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:33,504 INFO L225 Difference]: With dead ends: 5781 [2021-06-05 08:04:33,504 INFO L226 Difference]: Without dead ends: 5511 [2021-06-05 08:04:33,505 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 808 ImplicationChecksByTransitivity, 815.6ms TimeCoverageRelationStatistics Valid=1074, Invalid=3216, Unknown=0, NotChecked=0, Total=4290 [2021-06-05 08:04:33,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5511 states. [2021-06-05 08:04:33,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5511 to 3688. [2021-06-05 08:04:33,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3688 states, 3687 states have (on average 2.7469487388120424) internal successors, (10128), 3687 states have internal predecessors, (10128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:33,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3688 states to 3688 states and 10128 transitions. [2021-06-05 08:04:33,555 INFO L78 Accepts]: Start accepts. Automaton has 3688 states and 10128 transitions. Word has length 160 [2021-06-05 08:04:33,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:33,555 INFO L482 AbstractCegarLoop]: Abstraction has 3688 states and 10128 transitions. [2021-06-05 08:04:33,555 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:33,555 INFO L276 IsEmpty]: Start isEmpty. Operand 3688 states and 10128 transitions. [2021-06-05 08:04:33,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-06-05 08:04:33,559 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:33,559 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:33,759 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable332,328 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:33,759 INFO L430 AbstractCegarLoop]: === Iteration 334 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:33,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:33,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1902040416, now seen corresponding path program 325 times [2021-06-05 08:04:33,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:33,760 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317141753] [2021-06-05 08:04:33,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:33,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:34,062 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:34,062 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:34,062 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317141753] [2021-06-05 08:04:34,062 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317141753] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:34,062 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550312662] [2021-06-05 08:04:34,062 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 329 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 329 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:34,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:34,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 08:04:34,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:34,313 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:34,313 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550312662] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:34,313 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:34,313 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2021-06-05 08:04:34,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516453749] [2021-06-05 08:04:34,313 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 08:04:34,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:34,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 08:04:34,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=754, Unknown=0, NotChecked=0, Total=930 [2021-06-05 08:04:34,314 INFO L87 Difference]: Start difference. First operand 3688 states and 10128 transitions. Second operand has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:34,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:34,987 INFO L93 Difference]: Finished difference Result 5806 states and 14567 transitions. [2021-06-05 08:04:34,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 08:04:34,987 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-06-05 08:04:34,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:34,992 INFO L225 Difference]: With dead ends: 5806 [2021-06-05 08:04:34,993 INFO L226 Difference]: Without dead ends: 5536 [2021-06-05 08:04:34,993 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 792 ImplicationChecksByTransitivity, 762.7ms TimeCoverageRelationStatistics Valid=1002, Invalid=3030, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 08:04:34,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5536 states. [2021-06-05 08:04:35,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5536 to 3763. [2021-06-05 08:04:35,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3763 states, 3762 states have (on average 2.751993620414673) internal successors, (10353), 3762 states have internal predecessors, (10353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:35,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3763 states to 3763 states and 10353 transitions. [2021-06-05 08:04:35,040 INFO L78 Accepts]: Start accepts. Automaton has 3763 states and 10353 transitions. Word has length 160 [2021-06-05 08:04:35,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:35,040 INFO L482 AbstractCegarLoop]: Abstraction has 3763 states and 10353 transitions. [2021-06-05 08:04:35,040 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:35,040 INFO L276 IsEmpty]: Start isEmpty. Operand 3763 states and 10353 transitions. [2021-06-05 08:04:35,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-06-05 08:04:35,043 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:35,043 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:35,243 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 329 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable333 [2021-06-05 08:04:35,244 INFO L430 AbstractCegarLoop]: === Iteration 335 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:35,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:35,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1025305648, now seen corresponding path program 326 times [2021-06-05 08:04:35,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:35,244 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689554632] [2021-06-05 08:04:35,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:35,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:35,590 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:35,590 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:35,590 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689554632] [2021-06-05 08:04:35,590 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689554632] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:35,590 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090203316] [2021-06-05 08:04:35,590 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 330 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 330 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:35,655 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:04:35,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:04:35,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 08:04:35,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:35,858 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:35,858 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090203316] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:35,858 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:35,858 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2021-06-05 08:04:35,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877557952] [2021-06-05 08:04:35,858 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-06-05 08:04:35,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:35,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-06-05 08:04:35,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=823, Unknown=0, NotChecked=0, Total=992 [2021-06-05 08:04:35,859 INFO L87 Difference]: Start difference. First operand 3763 states and 10353 transitions. Second operand has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:36,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:36,673 INFO L93 Difference]: Finished difference Result 5831 states and 14692 transitions. [2021-06-05 08:04:36,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 08:04:36,673 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-06-05 08:04:36,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:36,680 INFO L225 Difference]: With dead ends: 5831 [2021-06-05 08:04:36,680 INFO L226 Difference]: Without dead ends: 5561 [2021-06-05 08:04:36,680 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 901 ImplicationChecksByTransitivity, 894.8ms TimeCoverageRelationStatistics Valid=1097, Invalid=3459, Unknown=0, NotChecked=0, Total=4556 [2021-06-05 08:04:36,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5561 states. [2021-06-05 08:04:36,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5561 to 3838. [2021-06-05 08:04:36,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3838 states, 3837 states have (on average 2.7568412822517594) internal successors, (10578), 3837 states have internal predecessors, (10578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:36,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3838 states to 3838 states and 10578 transitions. [2021-06-05 08:04:36,731 INFO L78 Accepts]: Start accepts. Automaton has 3838 states and 10578 transitions. Word has length 160 [2021-06-05 08:04:36,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:36,731 INFO L482 AbstractCegarLoop]: Abstraction has 3838 states and 10578 transitions. [2021-06-05 08:04:36,731 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:36,731 INFO L276 IsEmpty]: Start isEmpty. Operand 3838 states and 10578 transitions. [2021-06-05 08:04:36,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-06-05 08:04:36,734 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:36,734 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:36,935 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 330 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable334 [2021-06-05 08:04:36,935 INFO L430 AbstractCegarLoop]: === Iteration 336 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:36,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:36,935 INFO L82 PathProgramCache]: Analyzing trace with hash -712020706, now seen corresponding path program 327 times [2021-06-05 08:04:36,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:36,935 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185015276] [2021-06-05 08:04:36,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:36,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:37,333 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:37,333 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:37,334 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185015276] [2021-06-05 08:04:37,334 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185015276] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:37,334 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184552354] [2021-06-05 08:04:37,334 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 331 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 331 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:37,411 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2021-06-05 08:04:37,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:04:37,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 51 conjunts are in the unsatisfiable core [2021-06-05 08:04:37,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:37,602 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:37,603 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184552354] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:37,603 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:37,603 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2021-06-05 08:04:37,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016918627] [2021-06-05 08:04:37,603 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 08:04:37,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:37,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 08:04:37,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=768, Unknown=0, NotChecked=0, Total=930 [2021-06-05 08:04:37,603 INFO L87 Difference]: Start difference. First operand 3838 states and 10578 transitions. Second operand has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:38,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:38,378 INFO L93 Difference]: Finished difference Result 5856 states and 14817 transitions. [2021-06-05 08:04:38,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 08:04:38,378 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-06-05 08:04:38,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:38,385 INFO L225 Difference]: With dead ends: 5856 [2021-06-05 08:04:38,385 INFO L226 Difference]: Without dead ends: 5586 [2021-06-05 08:04:38,386 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 882 ImplicationChecksByTransitivity, 893.0ms TimeCoverageRelationStatistics Valid=1033, Invalid=3257, Unknown=0, NotChecked=0, Total=4290 [2021-06-05 08:04:38,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5586 states. [2021-06-05 08:04:38,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5586 to 3913. [2021-06-05 08:04:38,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3913 states, 3912 states have (on average 2.7615030674846626) internal successors, (10803), 3912 states have internal predecessors, (10803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:38,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3913 states to 3913 states and 10803 transitions. [2021-06-05 08:04:38,470 INFO L78 Accepts]: Start accepts. Automaton has 3913 states and 10803 transitions. Word has length 160 [2021-06-05 08:04:38,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:38,470 INFO L482 AbstractCegarLoop]: Abstraction has 3913 states and 10803 transitions. [2021-06-05 08:04:38,470 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:38,471 INFO L276 IsEmpty]: Start isEmpty. Operand 3913 states and 10803 transitions. [2021-06-05 08:04:38,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-06-05 08:04:38,474 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:38,474 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:38,674 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 331 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable335 [2021-06-05 08:04:38,674 INFO L430 AbstractCegarLoop]: === Iteration 337 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:38,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:38,675 INFO L82 PathProgramCache]: Analyzing trace with hash 652527598, now seen corresponding path program 328 times [2021-06-05 08:04:38,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:38,675 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837390226] [2021-06-05 08:04:38,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:38,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:38,978 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:38,978 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:38,978 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837390226] [2021-06-05 08:04:38,978 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837390226] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:38,978 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423403860] [2021-06-05 08:04:38,978 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 332 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 332 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:39,043 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:04:39,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:04:39,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 08:04:39,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:39,245 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:39,245 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423403860] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:39,246 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:39,246 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2021-06-05 08:04:39,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357945012] [2021-06-05 08:04:39,246 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-06-05 08:04:39,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:39,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-06-05 08:04:39,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2021-06-05 08:04:39,246 INFO L87 Difference]: Start difference. First operand 3913 states and 10803 transitions. Second operand has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:40,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:40,121 INFO L93 Difference]: Finished difference Result 5881 states and 14942 transitions. [2021-06-05 08:04:40,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 08:04:40,122 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-06-05 08:04:40,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:40,128 INFO L225 Difference]: With dead ends: 5881 [2021-06-05 08:04:40,128 INFO L226 Difference]: Without dead ends: 5611 [2021-06-05 08:04:40,128 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 998 ImplicationChecksByTransitivity, 920.4ms TimeCoverageRelationStatistics Valid=1136, Invalid=3694, Unknown=0, NotChecked=0, Total=4830 [2021-06-05 08:04:40,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5611 states. [2021-06-05 08:04:40,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5611 to 3988. [2021-06-05 08:04:40,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3988 states, 3987 states have (on average 2.7659894657637323) internal successors, (11028), 3987 states have internal predecessors, (11028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:40,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3988 states to 3988 states and 11028 transitions. [2021-06-05 08:04:40,181 INFO L78 Accepts]: Start accepts. Automaton has 3988 states and 11028 transitions. Word has length 160 [2021-06-05 08:04:40,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:40,181 INFO L482 AbstractCegarLoop]: Abstraction has 3988 states and 11028 transitions. [2021-06-05 08:04:40,181 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:40,182 INFO L276 IsEmpty]: Start isEmpty. Operand 3988 states and 11028 transitions. [2021-06-05 08:04:40,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-06-05 08:04:40,185 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:40,185 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:40,385 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 332 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable336 [2021-06-05 08:04:40,385 INFO L430 AbstractCegarLoop]: === Iteration 338 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:40,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:40,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1624704420, now seen corresponding path program 329 times [2021-06-05 08:04:40,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:40,386 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121335452] [2021-06-05 08:04:40,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:40,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:40,670 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:40,670 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:40,670 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121335452] [2021-06-05 08:04:40,670 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121335452] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:40,670 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865692508] [2021-06-05 08:04:40,670 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 333 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 333 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:40,737 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2021-06-05 08:04:40,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:04:40,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 08:04:40,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:40,928 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:40,928 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865692508] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:40,928 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:40,929 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2021-06-05 08:04:40,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83510987] [2021-06-05 08:04:40,929 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 08:04:40,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:40,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 08:04:40,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=778, Unknown=0, NotChecked=0, Total=930 [2021-06-05 08:04:40,929 INFO L87 Difference]: Start difference. First operand 3988 states and 11028 transitions. Second operand has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:41,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:41,650 INFO L93 Difference]: Finished difference Result 5906 states and 15067 transitions. [2021-06-05 08:04:41,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 08:04:41,651 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-06-05 08:04:41,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:41,657 INFO L225 Difference]: With dead ends: 5906 [2021-06-05 08:04:41,657 INFO L226 Difference]: Without dead ends: 5636 [2021-06-05 08:04:41,657 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 976 ImplicationChecksByTransitivity, 782.7ms TimeCoverageRelationStatistics Valid=1080, Invalid=3476, Unknown=0, NotChecked=0, Total=4556 [2021-06-05 08:04:41,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5636 states. [2021-06-05 08:04:41,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5636 to 4063. [2021-06-05 08:04:41,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4063 states, 4062 states have (on average 2.7703101920236337) internal successors, (11253), 4062 states have internal predecessors, (11253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:41,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4063 states to 4063 states and 11253 transitions. [2021-06-05 08:04:41,711 INFO L78 Accepts]: Start accepts. Automaton has 4063 states and 11253 transitions. Word has length 160 [2021-06-05 08:04:41,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:41,711 INFO L482 AbstractCegarLoop]: Abstraction has 4063 states and 11253 transitions. [2021-06-05 08:04:41,711 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:41,711 INFO L276 IsEmpty]: Start isEmpty. Operand 4063 states and 11253 transitions. [2021-06-05 08:04:41,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-06-05 08:04:41,715 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:41,715 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:41,915 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 333 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable337 [2021-06-05 08:04:41,915 INFO L430 AbstractCegarLoop]: === Iteration 339 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:41,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:41,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1771739436, now seen corresponding path program 330 times [2021-06-05 08:04:41,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:41,915 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311469420] [2021-06-05 08:04:41,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:41,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:42,237 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:42,237 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:42,238 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311469420] [2021-06-05 08:04:42,238 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311469420] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:42,238 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976963100] [2021-06-05 08:04:42,238 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 334 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 334 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:42,314 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2021-06-05 08:04:42,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:04:42,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 08:04:42,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:42,522 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:42,522 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976963100] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:42,522 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:42,522 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2021-06-05 08:04:42,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944657528] [2021-06-05 08:04:42,522 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-06-05 08:04:42,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:42,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-06-05 08:04:42,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=845, Unknown=0, NotChecked=0, Total=992 [2021-06-05 08:04:42,523 INFO L87 Difference]: Start difference. First operand 4063 states and 11253 transitions. Second operand has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:43,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:43,563 INFO L93 Difference]: Finished difference Result 5931 states and 15192 transitions. [2021-06-05 08:04:43,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 08:04:43,563 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-06-05 08:04:43,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:43,569 INFO L225 Difference]: With dead ends: 5931 [2021-06-05 08:04:43,569 INFO L226 Difference]: Without dead ends: 5661 [2021-06-05 08:04:43,570 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1099 ImplicationChecksByTransitivity, 1076.5ms TimeCoverageRelationStatistics Valid=1191, Invalid=3921, Unknown=0, NotChecked=0, Total=5112 [2021-06-05 08:04:43,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5661 states. [2021-06-05 08:04:43,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5661 to 4138. [2021-06-05 08:04:43,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4138 states, 4137 states have (on average 2.774474256707759) internal successors, (11478), 4137 states have internal predecessors, (11478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:43,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4138 states to 4138 states and 11478 transitions. [2021-06-05 08:04:43,623 INFO L78 Accepts]: Start accepts. Automaton has 4138 states and 11478 transitions. Word has length 160 [2021-06-05 08:04:43,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:43,623 INFO L482 AbstractCegarLoop]: Abstraction has 4138 states and 11478 transitions. [2021-06-05 08:04:43,624 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:43,624 INFO L276 IsEmpty]: Start isEmpty. Operand 4138 states and 11478 transitions. [2021-06-05 08:04:43,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-06-05 08:04:43,627 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:43,627 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:43,827 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable338,334 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:43,827 INFO L430 AbstractCegarLoop]: === Iteration 340 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:43,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:43,828 INFO L82 PathProgramCache]: Analyzing trace with hash 156785946, now seen corresponding path program 331 times [2021-06-05 08:04:43,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:43,828 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92899207] [2021-06-05 08:04:43,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:43,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:44,104 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:44,105 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:44,105 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92899207] [2021-06-05 08:04:44,105 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92899207] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:44,105 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800906050] [2021-06-05 08:04:44,105 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 335 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 335 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:44,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:44,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 08:04:44,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:44,353 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:44,353 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800906050] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:44,354 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:44,354 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2021-06-05 08:04:44,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441756016] [2021-06-05 08:04:44,354 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 08:04:44,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:44,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 08:04:44,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=784, Unknown=0, NotChecked=0, Total=930 [2021-06-05 08:04:44,354 INFO L87 Difference]: Start difference. First operand 4138 states and 11478 transitions. Second operand has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:45,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:45,174 INFO L93 Difference]: Finished difference Result 5956 states and 15317 transitions. [2021-06-05 08:04:45,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 08:04:45,174 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-06-05 08:04:45,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:45,180 INFO L225 Difference]: With dead ends: 5956 [2021-06-05 08:04:45,181 INFO L226 Difference]: Without dead ends: 5686 [2021-06-05 08:04:45,181 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1074 ImplicationChecksByTransitivity, 809.6ms TimeCoverageRelationStatistics Valid=1143, Invalid=3687, Unknown=0, NotChecked=0, Total=4830 [2021-06-05 08:04:45,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5686 states. [2021-06-05 08:04:45,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5686 to 4213. [2021-06-05 08:04:45,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4213 states, 4212 states have (on average 2.7784900284900287) internal successors, (11703), 4212 states have internal predecessors, (11703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:45,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4213 states to 4213 states and 11703 transitions. [2021-06-05 08:04:45,238 INFO L78 Accepts]: Start accepts. Automaton has 4213 states and 11703 transitions. Word has length 160 [2021-06-05 08:04:45,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:45,240 INFO L482 AbstractCegarLoop]: Abstraction has 4213 states and 11703 transitions. [2021-06-05 08:04:45,240 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:45,240 INFO L276 IsEmpty]: Start isEmpty. Operand 4213 states and 11703 transitions. [2021-06-05 08:04:45,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-06-05 08:04:45,244 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:45,244 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:45,457 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable339,335 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:45,457 INFO L430 AbstractCegarLoop]: === Iteration 341 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:45,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:45,457 INFO L82 PathProgramCache]: Analyzing trace with hash -223658006, now seen corresponding path program 332 times [2021-06-05 08:04:45,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:45,457 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146341631] [2021-06-05 08:04:45,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:45,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:45,767 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:45,767 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:45,767 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146341631] [2021-06-05 08:04:45,768 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146341631] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:45,768 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121051034] [2021-06-05 08:04:45,768 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 336 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 336 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:45,840 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:04:45,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:04:45,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 08:04:45,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:46,083 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:46,084 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121051034] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:46,084 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:46,084 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2021-06-05 08:04:46,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963603303] [2021-06-05 08:04:46,084 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-06-05 08:04:46,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:46,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-06-05 08:04:46,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=850, Unknown=0, NotChecked=0, Total=992 [2021-06-05 08:04:46,084 INFO L87 Difference]: Start difference. First operand 4213 states and 11703 transitions. Second operand has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:47,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:47,100 INFO L93 Difference]: Finished difference Result 5981 states and 15442 transitions. [2021-06-05 08:04:47,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-05 08:04:47,100 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-06-05 08:04:47,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:47,106 INFO L225 Difference]: With dead ends: 5981 [2021-06-05 08:04:47,106 INFO L226 Difference]: Without dead ends: 5711 [2021-06-05 08:04:47,107 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1204 ImplicationChecksByTransitivity, 1023.3ms TimeCoverageRelationStatistics Valid=1262, Invalid=4140, Unknown=0, NotChecked=0, Total=5402 [2021-06-05 08:04:47,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5711 states. [2021-06-05 08:04:47,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5711 to 4288. [2021-06-05 08:04:47,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4288 states, 4287 states have (on average 2.782365290412876) internal successors, (11928), 4287 states have internal predecessors, (11928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:47,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4288 states to 4288 states and 11928 transitions. [2021-06-05 08:04:47,161 INFO L78 Accepts]: Start accepts. Automaton has 4288 states and 11928 transitions. Word has length 160 [2021-06-05 08:04:47,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:47,161 INFO L482 AbstractCegarLoop]: Abstraction has 4288 states and 11928 transitions. [2021-06-05 08:04:47,161 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:47,161 INFO L276 IsEmpty]: Start isEmpty. Operand 4288 states and 11928 transitions. [2021-06-05 08:04:47,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-06-05 08:04:47,165 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:47,165 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:47,365 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable340,336 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:47,365 INFO L430 AbstractCegarLoop]: === Iteration 342 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:47,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:47,366 INFO L82 PathProgramCache]: Analyzing trace with hash 400717144, now seen corresponding path program 333 times [2021-06-05 08:04:47,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:47,366 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438078328] [2021-06-05 08:04:47,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:47,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:47,637 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:47,637 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:47,637 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438078328] [2021-06-05 08:04:47,637 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438078328] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:47,637 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819682171] [2021-06-05 08:04:47,637 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 337 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 337 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:47,725 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2021-06-05 08:04:47,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:04:47,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 45 conjunts are in the unsatisfiable core [2021-06-05 08:04:47,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:47,897 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:47,897 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819682171] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:47,898 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:47,898 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2021-06-05 08:04:47,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496327669] [2021-06-05 08:04:47,898 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 08:04:47,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:47,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 08:04:47,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=786, Unknown=0, NotChecked=0, Total=930 [2021-06-05 08:04:47,898 INFO L87 Difference]: Start difference. First operand 4288 states and 11928 transitions. Second operand has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:48,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:48,781 INFO L93 Difference]: Finished difference Result 6006 states and 15567 transitions. [2021-06-05 08:04:48,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 08:04:48,782 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-06-05 08:04:48,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:48,788 INFO L225 Difference]: With dead ends: 6006 [2021-06-05 08:04:48,788 INFO L226 Difference]: Without dead ends: 5736 [2021-06-05 08:04:48,789 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1176 ImplicationChecksByTransitivity, 861.3ms TimeCoverageRelationStatistics Valid=1222, Invalid=3890, Unknown=0, NotChecked=0, Total=5112 [2021-06-05 08:04:48,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5736 states. [2021-06-05 08:04:48,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5736 to 4363. [2021-06-05 08:04:48,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4363 states, 4362 states have (on average 2.7861072902338377) internal successors, (12153), 4362 states have internal predecessors, (12153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:48,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4363 states to 4363 states and 12153 transitions. [2021-06-05 08:04:48,847 INFO L78 Accepts]: Start accepts. Automaton has 4363 states and 12153 transitions. Word has length 160 [2021-06-05 08:04:48,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:48,847 INFO L482 AbstractCegarLoop]: Abstraction has 4363 states and 12153 transitions. [2021-06-05 08:04:48,848 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:48,848 INFO L276 IsEmpty]: Start isEmpty. Operand 4363 states and 12153 transitions. [2021-06-05 08:04:48,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-06-05 08:04:48,851 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:48,851 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:49,065 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable341,337 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:49,065 INFO L430 AbstractCegarLoop]: === Iteration 343 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:49,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:49,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1209769000, now seen corresponding path program 334 times [2021-06-05 08:04:49,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:49,065 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587376795] [2021-06-05 08:04:49,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:49,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:49,376 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:49,376 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:49,376 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587376795] [2021-06-05 08:04:49,376 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587376795] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:49,376 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95118367] [2021-06-05 08:04:49,376 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 338 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 338 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:49,447 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:04:49,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:04:49,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 08:04:49,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:49,708 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:49,708 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95118367] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:49,709 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:49,709 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2021-06-05 08:04:49,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627679086] [2021-06-05 08:04:49,709 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-06-05 08:04:49,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:49,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-06-05 08:04:49,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=851, Unknown=0, NotChecked=0, Total=992 [2021-06-05 08:04:49,709 INFO L87 Difference]: Start difference. First operand 4363 states and 12153 transitions. Second operand has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:50,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:50,755 INFO L93 Difference]: Finished difference Result 6031 states and 15692 transitions. [2021-06-05 08:04:50,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 08:04:50,756 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-06-05 08:04:50,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:50,762 INFO L225 Difference]: With dead ends: 6031 [2021-06-05 08:04:50,762 INFO L226 Difference]: Without dead ends: 5761 [2021-06-05 08:04:50,763 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1313 ImplicationChecksByTransitivity, 1052.9ms TimeCoverageRelationStatistics Valid=1349, Invalid=4351, Unknown=0, NotChecked=0, Total=5700 [2021-06-05 08:04:50,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5761 states. [2021-06-05 08:04:50,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5761 to 4438. [2021-06-05 08:04:50,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4438 states, 4437 states have (on average 2.7897227856659907) internal successors, (12378), 4437 states have internal predecessors, (12378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:50,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4438 states to 4438 states and 12378 transitions. [2021-06-05 08:04:50,821 INFO L78 Accepts]: Start accepts. Automaton has 4438 states and 12378 transitions. Word has length 160 [2021-06-05 08:04:50,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:50,821 INFO L482 AbstractCegarLoop]: Abstraction has 4438 states and 12378 transitions. [2021-06-05 08:04:50,821 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:50,821 INFO L276 IsEmpty]: Start isEmpty. Operand 4438 states and 12378 transitions. [2021-06-05 08:04:50,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-06-05 08:04:50,825 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:50,825 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:51,025 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 338 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable342 [2021-06-05 08:04:51,025 INFO L430 AbstractCegarLoop]: === Iteration 344 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:51,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:51,026 INFO L82 PathProgramCache]: Analyzing trace with hash -182181098, now seen corresponding path program 335 times [2021-06-05 08:04:51,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:51,026 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786263786] [2021-06-05 08:04:51,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:51,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:51,306 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:51,307 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:51,307 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786263786] [2021-06-05 08:04:51,307 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786263786] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:51,307 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829446905] [2021-06-05 08:04:51,307 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 339 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 339 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:51,374 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2021-06-05 08:04:51,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:04:51,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 08:04:51,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:51,547 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:51,548 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829446905] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:51,548 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:51,548 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2021-06-05 08:04:51,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367769046] [2021-06-05 08:04:51,548 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 08:04:51,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:51,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 08:04:51,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=784, Unknown=0, NotChecked=0, Total=930 [2021-06-05 08:04:51,548 INFO L87 Difference]: Start difference. First operand 4438 states and 12378 transitions. Second operand has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:52,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:52,429 INFO L93 Difference]: Finished difference Result 6056 states and 15817 transitions. [2021-06-05 08:04:52,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 08:04:52,430 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-06-05 08:04:52,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:52,436 INFO L225 Difference]: With dead ends: 6056 [2021-06-05 08:04:52,436 INFO L226 Difference]: Without dead ends: 5786 [2021-06-05 08:04:52,437 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1282 ImplicationChecksByTransitivity, 886.7ms TimeCoverageRelationStatistics Valid=1317, Invalid=4085, Unknown=0, NotChecked=0, Total=5402 [2021-06-05 08:04:52,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5786 states. [2021-06-05 08:04:52,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5786 to 4513. [2021-06-05 08:04:52,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4513 states, 4512 states have (on average 2.793218085106383) internal successors, (12603), 4512 states have internal predecessors, (12603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:52,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4513 states to 4513 states and 12603 transitions. [2021-06-05 08:04:52,496 INFO L78 Accepts]: Start accepts. Automaton has 4513 states and 12603 transitions. Word has length 160 [2021-06-05 08:04:52,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:52,496 INFO L482 AbstractCegarLoop]: Abstraction has 4513 states and 12603 transitions. [2021-06-05 08:04:52,496 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:52,497 INFO L276 IsEmpty]: Start isEmpty. Operand 4513 states and 12603 transitions. [2021-06-05 08:04:52,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-06-05 08:04:52,500 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:52,500 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:52,701 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 339 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable343 [2021-06-05 08:04:52,701 INFO L430 AbstractCegarLoop]: === Iteration 345 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:52,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:52,701 INFO L82 PathProgramCache]: Analyzing trace with hash -427258394, now seen corresponding path program 336 times [2021-06-05 08:04:52,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:52,701 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132911144] [2021-06-05 08:04:52,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:52,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:53,008 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:53,008 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:53,008 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132911144] [2021-06-05 08:04:53,008 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132911144] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:53,008 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339244451] [2021-06-05 08:04:53,008 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 340 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 340 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:53,090 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2021-06-05 08:04:53,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:04:53,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 43 conjunts are in the unsatisfiable core [2021-06-05 08:04:53,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:53,337 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:53,337 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339244451] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:53,337 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:53,337 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2021-06-05 08:04:53,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252500350] [2021-06-05 08:04:53,337 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-06-05 08:04:53,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:53,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-06-05 08:04:53,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=848, Unknown=0, NotChecked=0, Total=992 [2021-06-05 08:04:53,338 INFO L87 Difference]: Start difference. First operand 4513 states and 12603 transitions. Second operand has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:54,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:54,448 INFO L93 Difference]: Finished difference Result 6081 states and 15942 transitions. [2021-06-05 08:04:54,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 08:04:54,448 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-06-05 08:04:54,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:54,454 INFO L225 Difference]: With dead ends: 6081 [2021-06-05 08:04:54,454 INFO L226 Difference]: Without dead ends: 5811 [2021-06-05 08:04:54,455 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1303 ImplicationChecksByTransitivity, 1095.9ms TimeCoverageRelationStatistics Valid=1280, Invalid=4420, Unknown=0, NotChecked=0, Total=5700 [2021-06-05 08:04:54,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5811 states. [2021-06-05 08:04:54,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5811 to 4588. [2021-06-05 08:04:54,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4588 states, 4587 states have (on average 2.7965990843688684) internal successors, (12828), 4587 states have internal predecessors, (12828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:54,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4588 states to 4588 states and 12828 transitions. [2021-06-05 08:04:54,515 INFO L78 Accepts]: Start accepts. Automaton has 4588 states and 12828 transitions. Word has length 160 [2021-06-05 08:04:54,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:54,515 INFO L482 AbstractCegarLoop]: Abstraction has 4588 states and 12828 transitions. [2021-06-05 08:04:54,515 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:54,515 INFO L276 IsEmpty]: Start isEmpty. Operand 4588 states and 12828 transitions. [2021-06-05 08:04:54,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-06-05 08:04:54,519 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:54,519 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:54,735 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 340 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable344 [2021-06-05 08:04:54,735 INFO L430 AbstractCegarLoop]: === Iteration 346 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:54,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:54,735 INFO L82 PathProgramCache]: Analyzing trace with hash -804108716, now seen corresponding path program 337 times [2021-06-05 08:04:54,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:54,735 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122527059] [2021-06-05 08:04:54,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:54,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:55,026 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:55,026 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:55,026 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122527059] [2021-06-05 08:04:55,026 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122527059] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:55,026 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583454298] [2021-06-05 08:04:55,026 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 341 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 341 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:55,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:55,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 08:04:55,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:55,262 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:55,262 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583454298] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:55,262 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:55,263 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2021-06-05 08:04:55,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364603062] [2021-06-05 08:04:55,263 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 08:04:55,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:55,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 08:04:55,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=778, Unknown=0, NotChecked=0, Total=930 [2021-06-05 08:04:55,263 INFO L87 Difference]: Start difference. First operand 4588 states and 12828 transitions. Second operand has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:56,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:56,236 INFO L93 Difference]: Finished difference Result 6106 states and 16067 transitions. [2021-06-05 08:04:56,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 08:04:56,236 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-06-05 08:04:56,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:56,243 INFO L225 Difference]: With dead ends: 6106 [2021-06-05 08:04:56,243 INFO L226 Difference]: Without dead ends: 5836 [2021-06-05 08:04:56,244 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1392 ImplicationChecksByTransitivity, 943.5ms TimeCoverageRelationStatistics Valid=1428, Invalid=4272, Unknown=0, NotChecked=0, Total=5700 [2021-06-05 08:04:56,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5836 states. [2021-06-05 08:04:56,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5836 to 4663. [2021-06-05 08:04:56,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4663 states, 4662 states have (on average 2.7998712998713) internal successors, (13053), 4662 states have internal predecessors, (13053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:56,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4663 states to 4663 states and 13053 transitions. [2021-06-05 08:04:56,307 INFO L78 Accepts]: Start accepts. Automaton has 4663 states and 13053 transitions. Word has length 160 [2021-06-05 08:04:56,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:56,307 INFO L482 AbstractCegarLoop]: Abstraction has 4663 states and 13053 transitions. [2021-06-05 08:04:56,307 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:56,307 INFO L276 IsEmpty]: Start isEmpty. Operand 4663 states and 13053 transitions. [2021-06-05 08:04:56,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-06-05 08:04:56,311 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:56,311 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:56,511 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 341 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable345 [2021-06-05 08:04:56,512 INFO L430 AbstractCegarLoop]: === Iteration 347 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:56,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:56,512 INFO L82 PathProgramCache]: Analyzing trace with hash 522646820, now seen corresponding path program 338 times [2021-06-05 08:04:56,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:56,512 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623235509] [2021-06-05 08:04:56,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:56,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:56,796 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:56,797 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:56,797 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623235509] [2021-06-05 08:04:56,797 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623235509] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:56,797 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307519734] [2021-06-05 08:04:56,797 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 342 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 342 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:56,869 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:04:56,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:04:56,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 08:04:56,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:57,113 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:57,114 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307519734] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:57,114 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:57,114 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2021-06-05 08:04:57,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980664380] [2021-06-05 08:04:57,114 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-06-05 08:04:57,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:57,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-06-05 08:04:57,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=841, Unknown=0, NotChecked=0, Total=992 [2021-06-05 08:04:57,114 INFO L87 Difference]: Start difference. First operand 4663 states and 13053 transitions. Second operand has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:58,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:04:58,368 INFO L93 Difference]: Finished difference Result 6131 states and 16192 transitions. [2021-06-05 08:04:58,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-05 08:04:58,368 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-06-05 08:04:58,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:04:58,374 INFO L225 Difference]: With dead ends: 6131 [2021-06-05 08:04:58,375 INFO L226 Difference]: Without dead ends: 5861 [2021-06-05 08:04:58,375 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1543 ImplicationChecksByTransitivity, 1233.6ms TimeCoverageRelationStatistics Valid=1571, Invalid=4749, Unknown=0, NotChecked=0, Total=6320 [2021-06-05 08:04:58,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5861 states. [2021-06-05 08:04:58,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5861 to 4738. [2021-06-05 08:04:58,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4738 states, 4737 states have (on average 2.803039898670044) internal successors, (13278), 4737 states have internal predecessors, (13278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:58,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4738 states to 4738 states and 13278 transitions. [2021-06-05 08:04:58,442 INFO L78 Accepts]: Start accepts. Automaton has 4738 states and 13278 transitions. Word has length 160 [2021-06-05 08:04:58,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:04:58,442 INFO L482 AbstractCegarLoop]: Abstraction has 4738 states and 13278 transitions. [2021-06-05 08:04:58,443 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:04:58,443 INFO L276 IsEmpty]: Start isEmpty. Operand 4738 states and 13278 transitions. [2021-06-05 08:04:58,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-06-05 08:04:58,446 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:04:58,447 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:04:58,647 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable346,342 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:58,647 INFO L430 AbstractCegarLoop]: === Iteration 348 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:04:58,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:04:58,647 INFO L82 PathProgramCache]: Analyzing trace with hash 976862994, now seen corresponding path program 339 times [2021-06-05 08:04:58,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:04:58,647 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280563211] [2021-06-05 08:04:58,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:04:58,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:04:58,921 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:58,922 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:04:58,922 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280563211] [2021-06-05 08:04:58,922 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280563211] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:58,922 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827332906] [2021-06-05 08:04:58,922 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 343 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 343 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:04:58,998 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2021-06-05 08:04:58,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:04:59,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 39 conjunts are in the unsatisfiable core [2021-06-05 08:04:59,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:04:59,168 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:04:59,168 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827332906] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:04:59,168 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:04:59,168 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2021-06-05 08:04:59,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034276957] [2021-06-05 08:04:59,169 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 08:04:59,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:04:59,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 08:04:59,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=768, Unknown=0, NotChecked=0, Total=930 [2021-06-05 08:04:59,169 INFO L87 Difference]: Start difference. First operand 4738 states and 13278 transitions. Second operand has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:00,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:05:00,150 INFO L93 Difference]: Finished difference Result 6156 states and 16317 transitions. [2021-06-05 08:05:00,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 08:05:00,151 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-06-05 08:05:00,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:05:00,157 INFO L225 Difference]: With dead ends: 6156 [2021-06-05 08:05:00,157 INFO L226 Difference]: Without dead ends: 5886 [2021-06-05 08:05:00,158 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1506 ImplicationChecksByTransitivity, 952.9ms TimeCoverageRelationStatistics Valid=1555, Invalid=4451, Unknown=0, NotChecked=0, Total=6006 [2021-06-05 08:05:00,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5886 states. [2021-06-05 08:05:00,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5886 to 4813. [2021-06-05 08:05:00,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4813 states, 4812 states have (on average 2.8061097256857854) internal successors, (13503), 4812 states have internal predecessors, (13503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:00,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4813 states to 4813 states and 13503 transitions. [2021-06-05 08:05:00,221 INFO L78 Accepts]: Start accepts. Automaton has 4813 states and 13503 transitions. Word has length 160 [2021-06-05 08:05:00,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:05:00,221 INFO L482 AbstractCegarLoop]: Abstraction has 4813 states and 13503 transitions. [2021-06-05 08:05:00,222 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:00,222 INFO L276 IsEmpty]: Start isEmpty. Operand 4813 states and 13503 transitions. [2021-06-05 08:05:00,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-06-05 08:05:00,225 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:05:00,226 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:05:00,426 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 343 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable347 [2021-06-05 08:05:00,426 INFO L430 AbstractCegarLoop]: === Iteration 349 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:05:00,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:05:00,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1975759330, now seen corresponding path program 340 times [2021-06-05 08:05:00,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:05:00,426 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747106373] [2021-06-05 08:05:00,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:05:00,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:00,691 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:00,692 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:05:00,692 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747106373] [2021-06-05 08:05:00,692 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747106373] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:00,692 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765371790] [2021-06-05 08:05:00,692 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 344 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 344 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:00,755 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:05:00,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:05:00,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 08:05:00,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:05:00,985 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:00,985 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765371790] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:00,985 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:05:00,985 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2021-06-05 08:05:00,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29556961] [2021-06-05 08:05:00,985 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-06-05 08:05:00,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:05:00,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-06-05 08:05:00,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=830, Unknown=0, NotChecked=0, Total=992 [2021-06-05 08:05:00,986 INFO L87 Difference]: Start difference. First operand 4813 states and 13503 transitions. Second operand has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:02,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:05:02,264 INFO L93 Difference]: Finished difference Result 6181 states and 16442 transitions. [2021-06-05 08:05:02,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-05 08:05:02,264 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-06-05 08:05:02,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:05:02,271 INFO L225 Difference]: With dead ends: 6181 [2021-06-05 08:05:02,271 INFO L226 Difference]: Without dead ends: 5911 [2021-06-05 08:05:02,272 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1664 ImplicationChecksByTransitivity, 1232.1ms TimeCoverageRelationStatistics Valid=1706, Invalid=4936, Unknown=0, NotChecked=0, Total=6642 [2021-06-05 08:05:02,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5911 states. [2021-06-05 08:05:02,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5911 to 4888. [2021-06-05 08:05:02,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4888 states, 4887 states have (on average 2.809085328422345) internal successors, (13728), 4887 states have internal predecessors, (13728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:02,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4888 states to 4888 states and 13728 transitions. [2021-06-05 08:05:02,339 INFO L78 Accepts]: Start accepts. Automaton has 4888 states and 13728 transitions. Word has length 160 [2021-06-05 08:05:02,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:05:02,339 INFO L482 AbstractCegarLoop]: Abstraction has 4888 states and 13728 transitions. [2021-06-05 08:05:02,340 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:02,340 INFO L276 IsEmpty]: Start isEmpty. Operand 4888 states and 13728 transitions. [2021-06-05 08:05:02,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-06-05 08:05:02,344 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:05:02,344 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:05:02,560 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable348,344 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:02,560 INFO L430 AbstractCegarLoop]: === Iteration 350 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:05:02,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:05:02,561 INFO L82 PathProgramCache]: Analyzing trace with hash 96431440, now seen corresponding path program 341 times [2021-06-05 08:05:02,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:05:02,561 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472736590] [2021-06-05 08:05:02,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:05:02,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:02,846 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:02,846 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:05:02,847 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472736590] [2021-06-05 08:05:02,847 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472736590] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:02,847 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796336083] [2021-06-05 08:05:02,847 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 345 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 345 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:02,924 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2021-06-05 08:05:02,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:05:02,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 08:05:02,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:05:03,191 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:03,191 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796336083] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:03,191 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:05:03,191 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2021-06-05 08:05:03,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873818377] [2021-06-05 08:05:03,192 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 08:05:03,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:05:03,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 08:05:03,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=754, Unknown=0, NotChecked=0, Total=930 [2021-06-05 08:05:03,192 INFO L87 Difference]: Start difference. First operand 4888 states and 13728 transitions. Second operand has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:04,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:05:04,256 INFO L93 Difference]: Finished difference Result 6206 states and 16567 transitions. [2021-06-05 08:05:04,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 08:05:04,257 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-06-05 08:05:04,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:05:04,263 INFO L225 Difference]: With dead ends: 6206 [2021-06-05 08:05:04,263 INFO L226 Difference]: Without dead ends: 5936 [2021-06-05 08:05:04,264 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1624 ImplicationChecksByTransitivity, 984.2ms TimeCoverageRelationStatistics Valid=1698, Invalid=4622, Unknown=0, NotChecked=0, Total=6320 [2021-06-05 08:05:04,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5936 states. [2021-06-05 08:05:04,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5936 to 4963. [2021-06-05 08:05:04,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4963 states, 4962 states have (on average 2.811970979443773) internal successors, (13953), 4962 states have internal predecessors, (13953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:04,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4963 states to 4963 states and 13953 transitions. [2021-06-05 08:05:04,338 INFO L78 Accepts]: Start accepts. Automaton has 4963 states and 13953 transitions. Word has length 160 [2021-06-05 08:05:04,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:05:04,338 INFO L482 AbstractCegarLoop]: Abstraction has 4963 states and 13953 transitions. [2021-06-05 08:05:04,338 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:04,338 INFO L276 IsEmpty]: Start isEmpty. Operand 4963 states and 13953 transitions. [2021-06-05 08:05:04,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-06-05 08:05:04,342 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:05:04,343 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:05:04,557 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 345 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable349 [2021-06-05 08:05:04,557 INFO L430 AbstractCegarLoop]: === Iteration 351 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:05:04,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:05:04,557 INFO L82 PathProgramCache]: Analyzing trace with hash 2126750752, now seen corresponding path program 342 times [2021-06-05 08:05:04,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:05:04,557 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793583447] [2021-06-05 08:05:04,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:05:04,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:04,883 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:04,884 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:05:04,884 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793583447] [2021-06-05 08:05:04,884 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793583447] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:04,884 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766079607] [2021-06-05 08:05:04,884 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 346 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 346 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:04,971 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2021-06-05 08:05:04,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:05:04,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 08:05:04,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:05:05,152 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:05,152 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766079607] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:05,152 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:05:05,152 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2021-06-05 08:05:05,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750239995] [2021-06-05 08:05:05,153 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-06-05 08:05:05,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:05:05,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-06-05 08:05:05,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2021-06-05 08:05:05,153 INFO L87 Difference]: Start difference. First operand 4963 states and 13953 transitions. Second operand has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:06,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:05:06,652 INFO L93 Difference]: Finished difference Result 6231 states and 16692 transitions. [2021-06-05 08:05:06,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-05 08:05:06,652 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-06-05 08:05:06,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:05:06,659 INFO L225 Difference]: With dead ends: 6231 [2021-06-05 08:05:06,659 INFO L226 Difference]: Without dead ends: 5961 [2021-06-05 08:05:06,660 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1633 ImplicationChecksByTransitivity, 1383.9ms TimeCoverageRelationStatistics Valid=1595, Invalid=5047, Unknown=0, NotChecked=0, Total=6642 [2021-06-05 08:05:06,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5961 states. [2021-06-05 08:05:06,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5961 to 5038. [2021-06-05 08:05:06,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5038 states, 5037 states have (on average 2.8147706968433592) internal successors, (14178), 5037 states have internal predecessors, (14178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:06,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5038 states to 5038 states and 14178 transitions. [2021-06-05 08:05:06,730 INFO L78 Accepts]: Start accepts. Automaton has 5038 states and 14178 transitions. Word has length 160 [2021-06-05 08:05:06,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:05:06,730 INFO L482 AbstractCegarLoop]: Abstraction has 5038 states and 14178 transitions. [2021-06-05 08:05:06,730 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:06,730 INFO L276 IsEmpty]: Start isEmpty. Operand 5038 states and 14178 transitions. [2021-06-05 08:05:06,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-06-05 08:05:06,735 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:05:06,735 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:05:06,951 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable350,346 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:06,951 INFO L430 AbstractCegarLoop]: === Iteration 352 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:05:06,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:05:06,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1553977074, now seen corresponding path program 343 times [2021-06-05 08:05:06,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:05:06,951 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456711739] [2021-06-05 08:05:06,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:05:06,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:07,349 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:07,350 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:05:07,350 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456711739] [2021-06-05 08:05:07,350 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456711739] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:07,350 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097920274] [2021-06-05 08:05:07,350 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 347 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 347 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:07,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:07,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 08:05:07,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:05:07,585 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:07,585 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097920274] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:07,585 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:05:07,585 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2021-06-05 08:05:07,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533291022] [2021-06-05 08:05:07,585 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 08:05:07,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:05:07,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 08:05:07,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=736, Unknown=0, NotChecked=0, Total=930 [2021-06-05 08:05:07,585 INFO L87 Difference]: Start difference. First operand 5038 states and 14178 transitions. Second operand has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:08,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:05:08,863 INFO L93 Difference]: Finished difference Result 6256 states and 16817 transitions. [2021-06-05 08:05:08,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-05 08:05:08,864 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-06-05 08:05:08,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:05:08,871 INFO L225 Difference]: With dead ends: 6256 [2021-06-05 08:05:08,871 INFO L226 Difference]: Without dead ends: 5986 [2021-06-05 08:05:08,872 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1746 ImplicationChecksByTransitivity, 1293.1ms TimeCoverageRelationStatistics Valid=1857, Invalid=4785, Unknown=0, NotChecked=0, Total=6642 [2021-06-05 08:05:08,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5986 states. [2021-06-05 08:05:08,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5986 to 5113. [2021-06-05 08:05:08,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5113 states, 5112 states have (on average 2.817488262910798) internal successors, (14403), 5112 states have internal predecessors, (14403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:08,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5113 states to 5113 states and 14403 transitions. [2021-06-05 08:05:08,973 INFO L78 Accepts]: Start accepts. Automaton has 5113 states and 14403 transitions. Word has length 160 [2021-06-05 08:05:08,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:05:08,973 INFO L482 AbstractCegarLoop]: Abstraction has 5113 states and 14403 transitions. [2021-06-05 08:05:08,973 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:08,973 INFO L276 IsEmpty]: Start isEmpty. Operand 5113 states and 14403 transitions. [2021-06-05 08:05:08,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-06-05 08:05:08,978 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:05:08,978 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:05:09,184 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable351,347 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:09,185 INFO L430 AbstractCegarLoop]: === Iteration 353 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:05:09,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:05:09,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1025747934, now seen corresponding path program 344 times [2021-06-05 08:05:09,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:05:09,185 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690319136] [2021-06-05 08:05:09,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:05:09,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:09,468 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:09,468 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:05:09,468 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690319136] [2021-06-05 08:05:09,469 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690319136] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:09,469 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392162246] [2021-06-05 08:05:09,469 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 348 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 348 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:09,532 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:05:09,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:05:09,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 08:05:09,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:05:09,867 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:09,867 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392162246] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:09,868 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:05:09,868 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2021-06-05 08:05:09,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768571484] [2021-06-05 08:05:09,868 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-06-05 08:05:09,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:05:09,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-06-05 08:05:09,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=796, Unknown=0, NotChecked=0, Total=992 [2021-06-05 08:05:09,868 INFO L87 Difference]: Start difference. First operand 5113 states and 14403 transitions. Second operand has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:11,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:05:11,345 INFO L93 Difference]: Finished difference Result 6341 states and 17107 transitions. [2021-06-05 08:05:11,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-05 08:05:11,345 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-06-05 08:05:11,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:05:11,352 INFO L225 Difference]: With dead ends: 6341 [2021-06-05 08:05:11,352 INFO L226 Difference]: Without dead ends: 6071 [2021-06-05 08:05:11,353 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1918 ImplicationChecksByTransitivity, 1409.1ms TimeCoverageRelationStatistics Valid=2024, Invalid=5286, Unknown=0, NotChecked=0, Total=7310 [2021-06-05 08:05:11,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6071 states. [2021-06-05 08:05:11,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6071 to 5188. [2021-06-05 08:05:11,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5188 states, 5187 states have (on average 2.82398303450935) internal successors, (14648), 5187 states have internal predecessors, (14648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:11,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5188 states to 5188 states and 14648 transitions. [2021-06-05 08:05:11,414 INFO L78 Accepts]: Start accepts. Automaton has 5188 states and 14648 transitions. Word has length 160 [2021-06-05 08:05:11,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:05:11,414 INFO L482 AbstractCegarLoop]: Abstraction has 5188 states and 14648 transitions. [2021-06-05 08:05:11,414 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:11,414 INFO L276 IsEmpty]: Start isEmpty. Operand 5188 states and 14648 transitions. [2021-06-05 08:05:11,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-06-05 08:05:11,419 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:05:11,419 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:05:11,619 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable352,348 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:11,619 INFO L430 AbstractCegarLoop]: === Iteration 354 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:05:11,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:05:11,619 INFO L82 PathProgramCache]: Analyzing trace with hash -6899668, now seen corresponding path program 345 times [2021-06-05 08:05:11,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:05:11,619 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844507066] [2021-06-05 08:05:11,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:05:11,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:11,887 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:11,887 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:05:11,887 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844507066] [2021-06-05 08:05:11,887 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844507066] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:11,887 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628810873] [2021-06-05 08:05:11,887 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 349 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 349 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:11,962 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2021-06-05 08:05:11,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:05:11,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 33 conjunts are in the unsatisfiable core [2021-06-05 08:05:11,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:05:12,128 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:12,128 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628810873] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:12,128 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:05:12,128 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2021-06-05 08:05:12,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236888718] [2021-06-05 08:05:12,128 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 08:05:12,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:05:12,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 08:05:12,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=714, Unknown=0, NotChecked=0, Total=930 [2021-06-05 08:05:12,129 INFO L87 Difference]: Start difference. First operand 5188 states and 14648 transitions. Second operand has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:13,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:05:13,312 INFO L93 Difference]: Finished difference Result 7108 states and 19281 transitions. [2021-06-05 08:05:13,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-05 08:05:13,313 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-06-05 08:05:13,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:05:13,320 INFO L225 Difference]: With dead ends: 7108 [2021-06-05 08:05:13,320 INFO L226 Difference]: Without dead ends: 6838 [2021-06-05 08:05:13,320 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1871 ImplicationChecksByTransitivity, 1061.1ms TimeCoverageRelationStatistics Valid=2033, Invalid=4939, Unknown=0, NotChecked=0, Total=6972 [2021-06-05 08:05:13,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6838 states. [2021-06-05 08:05:13,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6838 to 5368. [2021-06-05 08:05:13,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5368 states, 5367 states have (on average 2.8334264952487422) internal successors, (15207), 5367 states have internal predecessors, (15207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:13,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5368 states to 5368 states and 15207 transitions. [2021-06-05 08:05:13,388 INFO L78 Accepts]: Start accepts. Automaton has 5368 states and 15207 transitions. Word has length 160 [2021-06-05 08:05:13,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:05:13,388 INFO L482 AbstractCegarLoop]: Abstraction has 5368 states and 15207 transitions. [2021-06-05 08:05:13,388 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:13,388 INFO L276 IsEmpty]: Start isEmpty. Operand 5368 states and 15207 transitions. [2021-06-05 08:05:13,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-06-05 08:05:13,393 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:05:13,393 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:05:13,593 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 349 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable353 [2021-06-05 08:05:13,594 INFO L430 AbstractCegarLoop]: === Iteration 355 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:05:13,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:05:13,594 INFO L82 PathProgramCache]: Analyzing trace with hash 15443582, now seen corresponding path program 346 times [2021-06-05 08:05:13,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:05:13,594 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713997193] [2021-06-05 08:05:13,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:05:13,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:13,933 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:13,934 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:05:13,934 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713997193] [2021-06-05 08:05:13,934 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713997193] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:13,934 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606504566] [2021-06-05 08:05:13,934 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 350 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 350 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:14,003 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:05:14,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:05:14,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 08:05:14,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:05:14,197 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:14,197 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606504566] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:14,197 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:05:14,197 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2021-06-05 08:05:14,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531751482] [2021-06-05 08:05:14,198 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-06-05 08:05:14,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:05:14,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-06-05 08:05:14,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=773, Unknown=0, NotChecked=0, Total=992 [2021-06-05 08:05:14,198 INFO L87 Difference]: Start difference. First operand 5368 states and 15207 transitions. Second operand has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:15,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:05:15,685 INFO L93 Difference]: Finished difference Result 6595 states and 17981 transitions. [2021-06-05 08:05:15,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-06-05 08:05:15,685 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-06-05 08:05:15,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:05:15,692 INFO L225 Difference]: With dead ends: 6595 [2021-06-05 08:05:15,692 INFO L226 Difference]: Without dead ends: 6106 [2021-06-05 08:05:15,693 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2051 ImplicationChecksByTransitivity, 1462.1ms TimeCoverageRelationStatistics Valid=2210, Invalid=5446, Unknown=0, NotChecked=0, Total=7656 [2021-06-05 08:05:15,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6106 states. [2021-06-05 08:05:15,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6106 to 3513. [2021-06-05 08:05:15,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3513 states, 3512 states have (on average 2.7414578587699316) internal successors, (9628), 3512 states have internal predecessors, (9628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:15,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3513 states to 3513 states and 9628 transitions. [2021-06-05 08:05:15,744 INFO L78 Accepts]: Start accepts. Automaton has 3513 states and 9628 transitions. Word has length 160 [2021-06-05 08:05:15,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:05:15,744 INFO L482 AbstractCegarLoop]: Abstraction has 3513 states and 9628 transitions. [2021-06-05 08:05:15,744 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:15,744 INFO L276 IsEmpty]: Start isEmpty. Operand 3513 states and 9628 transitions. [2021-06-05 08:05:15,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-06-05 08:05:15,747 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:05:15,747 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:05:15,961 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 350 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable354 [2021-06-05 08:05:15,961 INFO L430 AbstractCegarLoop]: === Iteration 356 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:05:15,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:05:15,961 INFO L82 PathProgramCache]: Analyzing trace with hash 278983457, now seen corresponding path program 347 times [2021-06-05 08:05:15,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:05:15,961 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320977755] [2021-06-05 08:05:15,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:05:15,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:16,315 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:16,315 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:05:16,315 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320977755] [2021-06-05 08:05:16,315 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320977755] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:16,315 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108874223] [2021-06-05 08:05:16,315 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 351 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 351 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:16,392 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2021-06-05 08:05:16,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:05:16,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 33 conjunts are in the unsatisfiable core [2021-06-05 08:05:16,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:05:16,581 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:16,581 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108874223] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:16,581 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:05:16,581 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2021-06-05 08:05:16,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141158462] [2021-06-05 08:05:16,581 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-06-05 08:05:16,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:05:16,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-06-05 08:05:16,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=773, Unknown=0, NotChecked=0, Total=992 [2021-06-05 08:05:16,582 INFO L87 Difference]: Start difference. First operand 3513 states and 9628 transitions. Second operand has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:17,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:05:17,277 INFO L93 Difference]: Finished difference Result 5231 states and 13267 transitions. [2021-06-05 08:05:17,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 08:05:17,277 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-06-05 08:05:17,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:05:17,282 INFO L225 Difference]: With dead ends: 5231 [2021-06-05 08:05:17,282 INFO L226 Difference]: Without dead ends: 4961 [2021-06-05 08:05:17,283 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 740 ImplicationChecksByTransitivity, 755.4ms TimeCoverageRelationStatistics Valid=1074, Invalid=2958, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 08:05:17,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4961 states. [2021-06-05 08:05:17,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4961 to 3588. [2021-06-05 08:05:17,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3588 states, 3587 states have (on average 2.7468636743797044) internal successors, (9853), 3587 states have internal predecessors, (9853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:17,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3588 states to 3588 states and 9853 transitions. [2021-06-05 08:05:17,325 INFO L78 Accepts]: Start accepts. Automaton has 3588 states and 9853 transitions. Word has length 165 [2021-06-05 08:05:17,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:05:17,325 INFO L482 AbstractCegarLoop]: Abstraction has 3588 states and 9853 transitions. [2021-06-05 08:05:17,325 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:17,325 INFO L276 IsEmpty]: Start isEmpty. Operand 3588 states and 9853 transitions. [2021-06-05 08:05:17,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-06-05 08:05:17,328 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:05:17,328 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:05:17,537 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 351 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable355 [2021-06-05 08:05:17,537 INFO L430 AbstractCegarLoop]: === Iteration 357 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:05:17,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:05:17,537 INFO L82 PathProgramCache]: Analyzing trace with hash -222330383, now seen corresponding path program 348 times [2021-06-05 08:05:17,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:05:17,537 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635444046] [2021-06-05 08:05:17,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:05:17,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:17,905 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:17,905 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:05:17,905 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635444046] [2021-06-05 08:05:17,905 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635444046] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:17,905 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204736868] [2021-06-05 08:05:17,905 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 352 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 352 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:17,988 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2021-06-05 08:05:17,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:05:17,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 33 conjunts are in the unsatisfiable core [2021-06-05 08:05:17,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:05:18,193 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:18,193 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204736868] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:18,193 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:05:18,193 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2021-06-05 08:05:18,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423102020] [2021-06-05 08:05:18,194 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-05 08:05:18,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:05:18,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-05 08:05:18,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=846, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 08:05:18,194 INFO L87 Difference]: Start difference. First operand 3588 states and 9853 transitions. Second operand has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:18,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:05:18,928 INFO L93 Difference]: Finished difference Result 5901 states and 14682 transitions. [2021-06-05 08:05:18,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 08:05:18,928 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-06-05 08:05:18,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:05:18,934 INFO L225 Difference]: With dead ends: 5901 [2021-06-05 08:05:18,934 INFO L226 Difference]: Without dead ends: 5631 [2021-06-05 08:05:18,934 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 854 ImplicationChecksByTransitivity, 833.9ms TimeCoverageRelationStatistics Valid=1139, Invalid=3283, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 08:05:18,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5631 states. [2021-06-05 08:05:18,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5631 to 3663. [2021-06-05 08:05:18,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3663 states, 3662 states have (on average 2.75204806116876) internal successors, (10078), 3662 states have internal predecessors, (10078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:18,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3663 states to 3663 states and 10078 transitions. [2021-06-05 08:05:18,980 INFO L78 Accepts]: Start accepts. Automaton has 3663 states and 10078 transitions. Word has length 165 [2021-06-05 08:05:18,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:05:18,981 INFO L482 AbstractCegarLoop]: Abstraction has 3663 states and 10078 transitions. [2021-06-05 08:05:18,981 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:18,981 INFO L276 IsEmpty]: Start isEmpty. Operand 3663 states and 10078 transitions. [2021-06-05 08:05:18,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-06-05 08:05:18,984 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:05:18,984 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:05:19,184 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable356,352 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:19,184 INFO L430 AbstractCegarLoop]: === Iteration 358 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:05:19,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:05:19,184 INFO L82 PathProgramCache]: Analyzing trace with hash 254164959, now seen corresponding path program 349 times [2021-06-05 08:05:19,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:05:19,185 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674708217] [2021-06-05 08:05:19,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:05:19,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:19,518 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:19,518 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:05:19,518 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674708217] [2021-06-05 08:05:19,518 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674708217] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:19,518 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619219859] [2021-06-05 08:05:19,518 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 353 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 353 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:19,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:19,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 33 conjunts are in the unsatisfiable core [2021-06-05 08:05:19,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:05:19,775 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:19,775 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619219859] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:19,775 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:05:19,776 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2021-06-05 08:05:19,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79674577] [2021-06-05 08:05:19,776 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-06-05 08:05:19,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:05:19,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-06-05 08:05:19,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=794, Unknown=0, NotChecked=0, Total=992 [2021-06-05 08:05:19,776 INFO L87 Difference]: Start difference. First operand 3663 states and 10078 transitions. Second operand has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:20,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:05:20,505 INFO L93 Difference]: Finished difference Result 5931 states and 14817 transitions. [2021-06-05 08:05:20,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 08:05:20,507 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-06-05 08:05:20,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:05:20,512 INFO L225 Difference]: With dead ends: 5931 [2021-06-05 08:05:20,512 INFO L226 Difference]: Without dead ends: 5661 [2021-06-05 08:05:20,512 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 922 ImplicationChecksByTransitivity, 799.8ms TimeCoverageRelationStatistics Valid=1131, Invalid=3291, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 08:05:20,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5661 states. [2021-06-05 08:05:20,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5661 to 3738. [2021-06-05 08:05:20,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3738 states, 3737 states have (on average 2.757024351083757) internal successors, (10303), 3737 states have internal predecessors, (10303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:20,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3738 states to 3738 states and 10303 transitions. [2021-06-05 08:05:20,557 INFO L78 Accepts]: Start accepts. Automaton has 3738 states and 10303 transitions. Word has length 165 [2021-06-05 08:05:20,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:05:20,557 INFO L482 AbstractCegarLoop]: Abstraction has 3738 states and 10303 transitions. [2021-06-05 08:05:20,558 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:20,558 INFO L276 IsEmpty]: Start isEmpty. Operand 3738 states and 10303 transitions. [2021-06-05 08:05:20,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-06-05 08:05:20,561 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:05:20,561 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:05:20,761 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 353 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable357 [2021-06-05 08:05:20,761 INFO L430 AbstractCegarLoop]: === Iteration 359 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:05:20,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:05:20,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1720849071, now seen corresponding path program 350 times [2021-06-05 08:05:20,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:05:20,761 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060446336] [2021-06-05 08:05:20,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:05:20,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:21,119 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:21,120 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:05:21,120 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060446336] [2021-06-05 08:05:21,120 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060446336] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:21,120 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371243764] [2021-06-05 08:05:21,120 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 354 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 354 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:21,184 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:05:21,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:05:21,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 33 conjunts are in the unsatisfiable core [2021-06-05 08:05:21,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:05:21,399 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:21,399 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371243764] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:21,400 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:05:21,400 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2021-06-05 08:05:21,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69333868] [2021-06-05 08:05:21,400 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-05 08:05:21,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:05:21,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-05 08:05:21,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=866, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 08:05:21,400 INFO L87 Difference]: Start difference. First operand 3738 states and 10303 transitions. Second operand has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:22,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:05:22,193 INFO L93 Difference]: Finished difference Result 5956 states and 14942 transitions. [2021-06-05 08:05:22,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 08:05:22,194 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-06-05 08:05:22,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:05:22,199 INFO L225 Difference]: With dead ends: 5956 [2021-06-05 08:05:22,200 INFO L226 Difference]: Without dead ends: 5686 [2021-06-05 08:05:22,200 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 943 ImplicationChecksByTransitivity, 893.2ms TimeCoverageRelationStatistics Valid=1153, Invalid=3539, Unknown=0, NotChecked=0, Total=4692 [2021-06-05 08:05:22,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5686 states. [2021-06-05 08:05:22,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5686 to 3813. [2021-06-05 08:05:22,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3813 states, 3812 states have (on average 2.7618048268625395) internal successors, (10528), 3812 states have internal predecessors, (10528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:22,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3813 states to 3813 states and 10528 transitions. [2021-06-05 08:05:22,248 INFO L78 Accepts]: Start accepts. Automaton has 3813 states and 10528 transitions. Word has length 165 [2021-06-05 08:05:22,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:05:22,248 INFO L482 AbstractCegarLoop]: Abstraction has 3813 states and 10528 transitions. [2021-06-05 08:05:22,248 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:22,248 INFO L276 IsEmpty]: Start isEmpty. Operand 3813 states and 10528 transitions. [2021-06-05 08:05:22,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-06-05 08:05:22,251 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:05:22,251 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:05:22,451 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable358,354 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:22,451 INFO L430 AbstractCegarLoop]: === Iteration 360 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:05:22,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:05:22,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1585627677, now seen corresponding path program 351 times [2021-06-05 08:05:22,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:05:22,452 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401716988] [2021-06-05 08:05:22,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:05:22,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:22,867 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:22,867 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:05:22,867 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401716988] [2021-06-05 08:05:22,867 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401716988] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:22,867 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546948882] [2021-06-05 08:05:22,867 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 355 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 355 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:22,953 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2021-06-05 08:05:22,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:05:22,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 54 conjunts are in the unsatisfiable core [2021-06-05 08:05:22,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:05:23,132 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:23,132 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546948882] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:23,132 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:05:23,132 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2021-06-05 08:05:23,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927981584] [2021-06-05 08:05:23,132 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-06-05 08:05:23,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:05:23,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-06-05 08:05:23,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2021-06-05 08:05:23,133 INFO L87 Difference]: Start difference. First operand 3813 states and 10528 transitions. Second operand has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:23,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:05:23,864 INFO L93 Difference]: Finished difference Result 5981 states and 15067 transitions. [2021-06-05 08:05:23,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 08:05:23,864 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-06-05 08:05:23,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:05:23,870 INFO L225 Difference]: With dead ends: 5981 [2021-06-05 08:05:23,870 INFO L226 Difference]: Without dead ends: 5711 [2021-06-05 08:05:23,871 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1021 ImplicationChecksByTransitivity, 902.3ms TimeCoverageRelationStatistics Valid=1159, Invalid=3533, Unknown=0, NotChecked=0, Total=4692 [2021-06-05 08:05:23,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5711 states. [2021-06-05 08:05:23,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5711 to 3888. [2021-06-05 08:05:23,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3888 states, 3887 states have (on average 2.7664008232570105) internal successors, (10753), 3887 states have internal predecessors, (10753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:23,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3888 states to 3888 states and 10753 transitions. [2021-06-05 08:05:23,922 INFO L78 Accepts]: Start accepts. Automaton has 3888 states and 10753 transitions. Word has length 165 [2021-06-05 08:05:23,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:05:23,922 INFO L482 AbstractCegarLoop]: Abstraction has 3888 states and 10753 transitions. [2021-06-05 08:05:23,922 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:23,922 INFO L276 IsEmpty]: Start isEmpty. Operand 3888 states and 10753 transitions. [2021-06-05 08:05:23,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-06-05 08:05:23,926 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:05:23,926 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:05:24,142 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 355 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable359 [2021-06-05 08:05:24,142 INFO L430 AbstractCegarLoop]: === Iteration 361 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:05:24,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:05:24,143 INFO L82 PathProgramCache]: Analyzing trace with hash 708892909, now seen corresponding path program 352 times [2021-06-05 08:05:24,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:05:24,143 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402041767] [2021-06-05 08:05:24,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:05:24,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:24,585 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:24,585 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:05:24,585 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402041767] [2021-06-05 08:05:24,585 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402041767] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:24,586 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428413590] [2021-06-05 08:05:24,586 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 356 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 356 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:24,670 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:05:24,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:05:24,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 33 conjunts are in the unsatisfiable core [2021-06-05 08:05:24,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:05:24,966 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:24,967 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428413590] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:24,967 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:05:24,967 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2021-06-05 08:05:24,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925500368] [2021-06-05 08:05:24,974 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-05 08:05:24,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:05:24,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-05 08:05:24,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=882, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 08:05:24,975 INFO L87 Difference]: Start difference. First operand 3888 states and 10753 transitions. Second operand has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:25,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:05:25,814 INFO L93 Difference]: Finished difference Result 6006 states and 15192 transitions. [2021-06-05 08:05:25,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 08:05:25,814 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-06-05 08:05:25,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:05:25,820 INFO L225 Difference]: With dead ends: 6006 [2021-06-05 08:05:25,820 INFO L226 Difference]: Without dead ends: 5736 [2021-06-05 08:05:25,821 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1045 ImplicationChecksByTransitivity, 995.9ms TimeCoverageRelationStatistics Valid=1183, Invalid=3787, Unknown=0, NotChecked=0, Total=4970 [2021-06-05 08:05:25,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5736 states. [2021-06-05 08:05:25,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5736 to 3963. [2021-06-05 08:05:25,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3963 states, 3962 states have (on average 2.7708228167592126) internal successors, (10978), 3962 states have internal predecessors, (10978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:25,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3963 states to 3963 states and 10978 transitions. [2021-06-05 08:05:25,873 INFO L78 Accepts]: Start accepts. Automaton has 3963 states and 10978 transitions. Word has length 165 [2021-06-05 08:05:25,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:05:25,873 INFO L482 AbstractCegarLoop]: Abstraction has 3963 states and 10978 transitions. [2021-06-05 08:05:25,873 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:25,873 INFO L276 IsEmpty]: Start isEmpty. Operand 3963 states and 10978 transitions. [2021-06-05 08:05:25,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-06-05 08:05:25,876 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:05:25,876 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:05:26,077 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable360,356 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:26,077 INFO L430 AbstractCegarLoop]: === Iteration 362 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:05:26,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:05:26,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1028433445, now seen corresponding path program 353 times [2021-06-05 08:05:26,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:05:26,077 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115448344] [2021-06-05 08:05:26,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:05:26,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:26,510 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:26,510 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:05:26,510 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115448344] [2021-06-05 08:05:26,511 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115448344] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:26,511 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587313106] [2021-06-05 08:05:26,511 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 357 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 357 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:26,588 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2021-06-05 08:05:26,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:05:26,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 33 conjunts are in the unsatisfiable core [2021-06-05 08:05:26,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:05:26,772 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:26,772 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587313106] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:26,772 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:05:26,772 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2021-06-05 08:05:26,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901699973] [2021-06-05 08:05:26,772 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-06-05 08:05:26,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:05:26,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-06-05 08:05:26,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=824, Unknown=0, NotChecked=0, Total=992 [2021-06-05 08:05:26,773 INFO L87 Difference]: Start difference. First operand 3963 states and 10978 transitions. Second operand has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:27,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:05:27,624 INFO L93 Difference]: Finished difference Result 6031 states and 15317 transitions. [2021-06-05 08:05:27,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 08:05:27,624 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-06-05 08:05:27,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:05:27,630 INFO L225 Difference]: With dead ends: 6031 [2021-06-05 08:05:27,630 INFO L226 Difference]: Without dead ends: 5761 [2021-06-05 08:05:27,631 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1128 ImplicationChecksByTransitivity, 930.5ms TimeCoverageRelationStatistics Valid=1203, Invalid=3767, Unknown=0, NotChecked=0, Total=4970 [2021-06-05 08:05:27,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5761 states. [2021-06-05 08:05:27,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5761 to 4038. [2021-06-05 08:05:27,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4038 states, 4037 states have (on average 2.775080505325737) internal successors, (11203), 4037 states have internal predecessors, (11203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:27,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4038 states to 4038 states and 11203 transitions. [2021-06-05 08:05:27,683 INFO L78 Accepts]: Start accepts. Automaton has 4038 states and 11203 transitions. Word has length 165 [2021-06-05 08:05:27,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:05:27,684 INFO L482 AbstractCegarLoop]: Abstraction has 4038 states and 11203 transitions. [2021-06-05 08:05:27,684 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:27,684 INFO L276 IsEmpty]: Start isEmpty. Operand 4038 states and 11203 transitions. [2021-06-05 08:05:27,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-06-05 08:05:27,687 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:05:27,687 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:05:27,887 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable361,357 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:27,888 INFO L430 AbstractCegarLoop]: === Iteration 363 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:05:27,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:05:27,888 INFO L82 PathProgramCache]: Analyzing trace with hash 336114859, now seen corresponding path program 354 times [2021-06-05 08:05:27,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:05:27,888 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550052323] [2021-06-05 08:05:27,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:05:27,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:28,269 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:28,269 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:05:28,269 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550052323] [2021-06-05 08:05:28,269 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550052323] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:28,269 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956326837] [2021-06-05 08:05:28,270 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 358 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 358 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:28,356 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2021-06-05 08:05:28,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:05:28,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 33 conjunts are in the unsatisfiable core [2021-06-05 08:05:28,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:05:28,559 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:28,559 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956326837] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:28,559 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:05:28,559 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2021-06-05 08:05:28,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389723218] [2021-06-05 08:05:28,559 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-05 08:05:28,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:05:28,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-05 08:05:28,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=894, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 08:05:28,560 INFO L87 Difference]: Start difference. First operand 4038 states and 11203 transitions. Second operand has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:29,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:05:29,521 INFO L93 Difference]: Finished difference Result 6056 states and 15442 transitions. [2021-06-05 08:05:29,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 08:05:29,522 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-06-05 08:05:29,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:05:29,528 INFO L225 Difference]: With dead ends: 6056 [2021-06-05 08:05:29,528 INFO L226 Difference]: Without dead ends: 5786 [2021-06-05 08:05:29,529 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1155 ImplicationChecksByTransitivity, 1018.9ms TimeCoverageRelationStatistics Valid=1229, Invalid=4027, Unknown=0, NotChecked=0, Total=5256 [2021-06-05 08:05:29,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5786 states. [2021-06-05 08:05:29,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5786 to 4113. [2021-06-05 08:05:29,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4113 states, 4112 states have (on average 2.779182879377432) internal successors, (11428), 4112 states have internal predecessors, (11428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:29,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4113 states to 4113 states and 11428 transitions. [2021-06-05 08:05:29,585 INFO L78 Accepts]: Start accepts. Automaton has 4113 states and 11428 transitions. Word has length 165 [2021-06-05 08:05:29,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:05:29,585 INFO L482 AbstractCegarLoop]: Abstraction has 4113 states and 11428 transitions. [2021-06-05 08:05:29,586 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:29,586 INFO L276 IsEmpty]: Start isEmpty. Operand 4113 states and 11428 transitions. [2021-06-05 08:05:29,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-06-05 08:05:29,589 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:05:29,589 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:05:29,806 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable362,358 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:29,806 INFO L430 AbstractCegarLoop]: === Iteration 364 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:05:29,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:05:29,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1941117159, now seen corresponding path program 355 times [2021-06-05 08:05:29,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:05:29,806 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497030362] [2021-06-05 08:05:29,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:05:29,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:30,137 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:30,137 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:05:30,137 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497030362] [2021-06-05 08:05:30,137 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497030362] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:30,137 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818920323] [2021-06-05 08:05:30,137 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 359 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 359 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:30,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:30,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 33 conjunts are in the unsatisfiable core [2021-06-05 08:05:30,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:05:30,396 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:30,397 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818920323] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:30,397 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:05:30,397 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2021-06-05 08:05:30,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669622947] [2021-06-05 08:05:30,397 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-06-05 08:05:30,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:05:30,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-06-05 08:05:30,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=833, Unknown=0, NotChecked=0, Total=992 [2021-06-05 08:05:30,397 INFO L87 Difference]: Start difference. First operand 4113 states and 11428 transitions. Second operand has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:31,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:05:31,154 INFO L93 Difference]: Finished difference Result 6081 states and 15567 transitions. [2021-06-05 08:05:31,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 08:05:31,155 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-06-05 08:05:31,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:05:31,161 INFO L225 Difference]: With dead ends: 6081 [2021-06-05 08:05:31,161 INFO L226 Difference]: Without dead ends: 5811 [2021-06-05 08:05:31,162 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1239 ImplicationChecksByTransitivity, 859.0ms TimeCoverageRelationStatistics Valid=1263, Invalid=3993, Unknown=0, NotChecked=0, Total=5256 [2021-06-05 08:05:31,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5811 states. [2021-06-05 08:05:31,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5811 to 4188. [2021-06-05 08:05:31,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4188 states, 4187 states have (on average 2.7831382851683784) internal successors, (11653), 4187 states have internal predecessors, (11653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:31,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4188 states to 4188 states and 11653 transitions. [2021-06-05 08:05:31,217 INFO L78 Accepts]: Start accepts. Automaton has 4188 states and 11653 transitions. Word has length 165 [2021-06-05 08:05:31,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:05:31,217 INFO L482 AbstractCegarLoop]: Abstraction has 4188 states and 11653 transitions. [2021-06-05 08:05:31,217 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:31,217 INFO L276 IsEmpty]: Start isEmpty. Operand 4188 states and 11653 transitions. [2021-06-05 08:05:31,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-06-05 08:05:31,221 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:05:31,221 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:05:31,437 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 359 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable363 [2021-06-05 08:05:31,438 INFO L430 AbstractCegarLoop]: === Iteration 365 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:05:31,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:05:31,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1455326697, now seen corresponding path program 356 times [2021-06-05 08:05:31,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:05:31,438 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267351175] [2021-06-05 08:05:31,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:05:31,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:31,798 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:31,798 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:05:31,798 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267351175] [2021-06-05 08:05:31,798 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267351175] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:31,799 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114512257] [2021-06-05 08:05:31,799 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 360 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 360 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:31,874 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:05:31,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:05:31,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 33 conjunts are in the unsatisfiable core [2021-06-05 08:05:31,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:05:32,116 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:32,117 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114512257] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:32,117 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:05:32,117 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2021-06-05 08:05:32,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908334814] [2021-06-05 08:05:32,117 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-05 08:05:32,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:05:32,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-05 08:05:32,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=902, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 08:05:32,117 INFO L87 Difference]: Start difference. First operand 4188 states and 11653 transitions. Second operand has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:33,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:05:33,150 INFO L93 Difference]: Finished difference Result 6106 states and 15692 transitions. [2021-06-05 08:05:33,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-05 08:05:33,151 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-06-05 08:05:33,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:05:33,157 INFO L225 Difference]: With dead ends: 6106 [2021-06-05 08:05:33,157 INFO L226 Difference]: Without dead ends: 5836 [2021-06-05 08:05:33,158 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1269 ImplicationChecksByTransitivity, 1108.7ms TimeCoverageRelationStatistics Valid=1291, Invalid=4259, Unknown=0, NotChecked=0, Total=5550 [2021-06-05 08:05:33,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5836 states. [2021-06-05 08:05:33,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5836 to 4263. [2021-06-05 08:05:33,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4263 states, 4262 states have (on average 2.786954481464101) internal successors, (11878), 4262 states have internal predecessors, (11878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:33,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4263 states to 4263 states and 11878 transitions. [2021-06-05 08:05:33,214 INFO L78 Accepts]: Start accepts. Automaton has 4263 states and 11878 transitions. Word has length 165 [2021-06-05 08:05:33,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:05:33,214 INFO L482 AbstractCegarLoop]: Abstraction has 4263 states and 11878 transitions. [2021-06-05 08:05:33,214 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:33,214 INFO L276 IsEmpty]: Start isEmpty. Operand 4263 states and 11878 transitions. [2021-06-05 08:05:33,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-06-05 08:05:33,218 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:05:33,218 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:05:33,432 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable364,360 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:33,433 INFO L430 AbstractCegarLoop]: === Iteration 366 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:05:33,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:05:33,433 INFO L82 PathProgramCache]: Analyzing trace with hash -159626793, now seen corresponding path program 357 times [2021-06-05 08:05:33,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:05:33,433 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279154903] [2021-06-05 08:05:33,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:05:33,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:33,737 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:33,737 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:05:33,737 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279154903] [2021-06-05 08:05:33,737 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279154903] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:33,737 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394784846] [2021-06-05 08:05:33,737 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 361 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 361 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:33,826 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2021-06-05 08:05:33,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:05:33,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 48 conjunts are in the unsatisfiable core [2021-06-05 08:05:33,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:05:34,098 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:34,098 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394784846] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:34,098 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:05:34,098 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2021-06-05 08:05:34,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714950858] [2021-06-05 08:05:34,098 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-06-05 08:05:34,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:05:34,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-06-05 08:05:34,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=838, Unknown=0, NotChecked=0, Total=992 [2021-06-05 08:05:34,099 INFO L87 Difference]: Start difference. First operand 4263 states and 11878 transitions. Second operand has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:35,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:05:35,882 INFO L93 Difference]: Finished difference Result 6131 states and 15817 transitions. [2021-06-05 08:05:35,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 08:05:35,883 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-06-05 08:05:35,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:05:35,889 INFO L225 Difference]: With dead ends: 6131 [2021-06-05 08:05:35,889 INFO L226 Difference]: Without dead ends: 5861 [2021-06-05 08:05:35,889 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1354 ImplicationChecksByTransitivity, 1527.3ms TimeCoverageRelationStatistics Valid=1339, Invalid=4211, Unknown=0, NotChecked=0, Total=5550 [2021-06-05 08:05:35,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5861 states. [2021-06-05 08:05:35,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5861 to 4338. [2021-06-05 08:05:35,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4338 states, 4337 states have (on average 2.790638690338944) internal successors, (12103), 4337 states have internal predecessors, (12103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:35,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4338 states to 4338 states and 12103 transitions. [2021-06-05 08:05:35,949 INFO L78 Accepts]: Start accepts. Automaton has 4338 states and 12103 transitions. Word has length 165 [2021-06-05 08:05:35,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:05:35,949 INFO L482 AbstractCegarLoop]: Abstraction has 4338 states and 12103 transitions. [2021-06-05 08:05:35,949 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:35,949 INFO L276 IsEmpty]: Start isEmpty. Operand 4338 states and 12103 transitions. [2021-06-05 08:05:35,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-06-05 08:05:35,953 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:05:35,953 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:05:36,169 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 361 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable365 [2021-06-05 08:05:36,170 INFO L430 AbstractCegarLoop]: === Iteration 367 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:05:36,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:05:36,170 INFO L82 PathProgramCache]: Analyzing trace with hash -540070745, now seen corresponding path program 358 times [2021-06-05 08:05:36,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:05:36,170 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036798733] [2021-06-05 08:05:36,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:05:36,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:36,485 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:36,486 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:05:36,486 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036798733] [2021-06-05 08:05:36,486 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036798733] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:36,486 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14669747] [2021-06-05 08:05:36,486 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 362 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 362 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:36,566 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:05:36,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:05:36,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 33 conjunts are in the unsatisfiable core [2021-06-05 08:05:36,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:05:36,839 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:36,839 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14669747] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:36,839 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:05:36,839 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2021-06-05 08:05:36,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663258741] [2021-06-05 08:05:36,839 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-05 08:05:36,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:05:36,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-05 08:05:36,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=906, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 08:05:36,840 INFO L87 Difference]: Start difference. First operand 4338 states and 12103 transitions. Second operand has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:38,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:05:38,017 INFO L93 Difference]: Finished difference Result 6156 states and 15942 transitions. [2021-06-05 08:05:38,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 08:05:38,018 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-06-05 08:05:38,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:05:38,024 INFO L225 Difference]: With dead ends: 6156 [2021-06-05 08:05:38,024 INFO L226 Difference]: Without dead ends: 5886 [2021-06-05 08:05:38,025 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1387 ImplicationChecksByTransitivity, 1246.5ms TimeCoverageRelationStatistics Valid=1369, Invalid=4483, Unknown=0, NotChecked=0, Total=5852 [2021-06-05 08:05:38,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5886 states. [2021-06-05 08:05:38,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5886 to 4413. [2021-06-05 08:05:38,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4413 states, 4412 states have (on average 2.7941976427923843) internal successors, (12328), 4412 states have internal predecessors, (12328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:38,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4413 states to 4413 states and 12328 transitions. [2021-06-05 08:05:38,085 INFO L78 Accepts]: Start accepts. Automaton has 4413 states and 12328 transitions. Word has length 165 [2021-06-05 08:05:38,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:05:38,086 INFO L482 AbstractCegarLoop]: Abstraction has 4413 states and 12328 transitions. [2021-06-05 08:05:38,086 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:38,086 INFO L276 IsEmpty]: Start isEmpty. Operand 4413 states and 12328 transitions. [2021-06-05 08:05:38,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-06-05 08:05:38,090 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:05:38,090 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:05:38,306 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 362 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable366 [2021-06-05 08:05:38,306 INFO L430 AbstractCegarLoop]: === Iteration 368 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:05:38,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:05:38,306 INFO L82 PathProgramCache]: Analyzing trace with hash 84304405, now seen corresponding path program 359 times [2021-06-05 08:05:38,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:05:38,306 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659632110] [2021-06-05 08:05:38,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:05:38,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:38,605 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:38,605 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:05:38,605 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659632110] [2021-06-05 08:05:38,605 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659632110] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:38,605 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986702113] [2021-06-05 08:05:38,605 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 363 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 363 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:38,687 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2021-06-05 08:05:38,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:05:38,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 33 conjunts are in the unsatisfiable core [2021-06-05 08:05:38,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:05:38,867 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:38,867 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986702113] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:38,867 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:05:38,867 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2021-06-05 08:05:38,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428117676] [2021-06-05 08:05:38,867 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-06-05 08:05:38,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:05:38,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-06-05 08:05:38,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=839, Unknown=0, NotChecked=0, Total=992 [2021-06-05 08:05:38,868 INFO L87 Difference]: Start difference. First operand 4413 states and 12328 transitions. Second operand has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:39,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:05:39,794 INFO L93 Difference]: Finished difference Result 6181 states and 16067 transitions. [2021-06-05 08:05:39,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 08:05:39,795 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-06-05 08:05:39,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:05:39,801 INFO L225 Difference]: With dead ends: 6181 [2021-06-05 08:05:39,801 INFO L226 Difference]: Without dead ends: 5911 [2021-06-05 08:05:39,802 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1473 ImplicationChecksByTransitivity, 934.7ms TimeCoverageRelationStatistics Valid=1431, Invalid=4421, Unknown=0, NotChecked=0, Total=5852 [2021-06-05 08:05:39,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5911 states. [2021-06-05 08:05:39,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5911 to 4488. [2021-06-05 08:05:39,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4488 states, 4487 states have (on average 2.797637619790506) internal successors, (12553), 4487 states have internal predecessors, (12553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:39,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4488 states to 4488 states and 12553 transitions. [2021-06-05 08:05:39,866 INFO L78 Accepts]: Start accepts. Automaton has 4488 states and 12553 transitions. Word has length 165 [2021-06-05 08:05:39,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:05:39,867 INFO L482 AbstractCegarLoop]: Abstraction has 4488 states and 12553 transitions. [2021-06-05 08:05:39,867 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:39,867 INFO L276 IsEmpty]: Start isEmpty. Operand 4488 states and 12553 transitions. [2021-06-05 08:05:39,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-06-05 08:05:39,889 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:05:39,889 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:05:40,089 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 363 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable367 [2021-06-05 08:05:40,089 INFO L430 AbstractCegarLoop]: === Iteration 369 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:05:40,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:05:40,090 INFO L82 PathProgramCache]: Analyzing trace with hash 893356261, now seen corresponding path program 360 times [2021-06-05 08:05:40,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:05:40,090 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147730696] [2021-06-05 08:05:40,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:05:40,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:40,392 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:40,392 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:05:40,392 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147730696] [2021-06-05 08:05:40,392 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147730696] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:40,392 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549873164] [2021-06-05 08:05:40,392 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 364 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 364 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:40,474 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2021-06-05 08:05:40,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:05:40,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 33 conjunts are in the unsatisfiable core [2021-06-05 08:05:40,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:05:40,732 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:40,732 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549873164] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:40,732 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:05:40,732 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2021-06-05 08:05:40,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969920425] [2021-06-05 08:05:40,732 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-05 08:05:40,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:05:40,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-05 08:05:40,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=906, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 08:05:40,733 INFO L87 Difference]: Start difference. First operand 4488 states and 12553 transitions. Second operand has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:41,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:05:41,981 INFO L93 Difference]: Finished difference Result 6206 states and 16192 transitions. [2021-06-05 08:05:41,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-06-05 08:05:41,981 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-06-05 08:05:41,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:05:41,988 INFO L225 Difference]: With dead ends: 6206 [2021-06-05 08:05:41,988 INFO L226 Difference]: Without dead ends: 5936 [2021-06-05 08:05:41,988 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1509 ImplicationChecksByTransitivity, 1287.4ms TimeCoverageRelationStatistics Valid=1463, Invalid=4699, Unknown=0, NotChecked=0, Total=6162 [2021-06-05 08:05:41,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5936 states. [2021-06-05 08:05:42,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5936 to 4563. [2021-06-05 08:05:42,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4563 states, 4562 states have (on average 2.800964489259097) internal successors, (12778), 4562 states have internal predecessors, (12778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:42,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4563 states to 4563 states and 12778 transitions. [2021-06-05 08:05:42,050 INFO L78 Accepts]: Start accepts. Automaton has 4563 states and 12778 transitions. Word has length 165 [2021-06-05 08:05:42,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:05:42,051 INFO L482 AbstractCegarLoop]: Abstraction has 4563 states and 12778 transitions. [2021-06-05 08:05:42,051 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:42,051 INFO L276 IsEmpty]: Start isEmpty. Operand 4563 states and 12778 transitions. [2021-06-05 08:05:42,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-06-05 08:05:42,055 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:05:42,055 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:05:42,272 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 364 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable368 [2021-06-05 08:05:42,272 INFO L430 AbstractCegarLoop]: === Iteration 370 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:05:42,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:05:42,272 INFO L82 PathProgramCache]: Analyzing trace with hash -498593837, now seen corresponding path program 361 times [2021-06-05 08:05:42,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:05:42,272 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008010867] [2021-06-05 08:05:42,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:05:42,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:42,558 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:42,558 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:05:42,558 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008010867] [2021-06-05 08:05:42,558 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008010867] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:42,558 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135919430] [2021-06-05 08:05:42,558 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 365 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 365 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:42,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:42,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 33 conjunts are in the unsatisfiable core [2021-06-05 08:05:42,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:05:42,806 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:42,806 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135919430] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:42,807 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:05:42,807 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2021-06-05 08:05:42,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686763779] [2021-06-05 08:05:42,807 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-06-05 08:05:42,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:05:42,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-06-05 08:05:42,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2021-06-05 08:05:42,807 INFO L87 Difference]: Start difference. First operand 4563 states and 12778 transitions. Second operand has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:43,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:05:43,694 INFO L93 Difference]: Finished difference Result 6231 states and 16317 transitions. [2021-06-05 08:05:43,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 08:05:43,694 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-06-05 08:05:43,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:05:43,701 INFO L225 Difference]: With dead ends: 6231 [2021-06-05 08:05:43,701 INFO L226 Difference]: Without dead ends: 5961 [2021-06-05 08:05:43,702 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1596 ImplicationChecksByTransitivity, 908.5ms TimeCoverageRelationStatistics Valid=1539, Invalid=4623, Unknown=0, NotChecked=0, Total=6162 [2021-06-05 08:05:43,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5961 states. [2021-06-05 08:05:43,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5961 to 4638. [2021-06-05 08:05:43,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4638 states, 4637 states have (on average 2.8041837394867373) internal successors, (13003), 4637 states have internal predecessors, (13003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:43,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4638 states to 4638 states and 13003 transitions. [2021-06-05 08:05:43,765 INFO L78 Accepts]: Start accepts. Automaton has 4638 states and 13003 transitions. Word has length 165 [2021-06-05 08:05:43,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:05:43,765 INFO L482 AbstractCegarLoop]: Abstraction has 4638 states and 13003 transitions. [2021-06-05 08:05:43,765 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:43,766 INFO L276 IsEmpty]: Start isEmpty. Operand 4638 states and 13003 transitions. [2021-06-05 08:05:43,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-06-05 08:05:43,769 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:05:43,770 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:05:43,986 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable369,365 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:43,986 INFO L430 AbstractCegarLoop]: === Iteration 371 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:05:43,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:05:43,986 INFO L82 PathProgramCache]: Analyzing trace with hash -743671133, now seen corresponding path program 362 times [2021-06-05 08:05:43,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:05:43,986 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965199986] [2021-06-05 08:05:43,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:05:43,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:44,285 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:44,285 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:05:44,285 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965199986] [2021-06-05 08:05:44,286 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965199986] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:44,286 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815943558] [2021-06-05 08:05:44,286 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 366 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 366 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:44,358 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:05:44,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:05:44,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 33 conjunts are in the unsatisfiable core [2021-06-05 08:05:44,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:05:44,606 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:44,607 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815943558] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:44,607 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:05:44,607 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2021-06-05 08:05:44,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401718640] [2021-06-05 08:05:44,607 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-05 08:05:44,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:05:44,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-05 08:05:44,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=902, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 08:05:44,607 INFO L87 Difference]: Start difference. First operand 4638 states and 13003 transitions. Second operand has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:45,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:05:45,880 INFO L93 Difference]: Finished difference Result 6256 states and 16442 transitions. [2021-06-05 08:05:45,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-05 08:05:45,880 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-06-05 08:05:45,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:05:45,887 INFO L225 Difference]: With dead ends: 6256 [2021-06-05 08:05:45,887 INFO L226 Difference]: Without dead ends: 5986 [2021-06-05 08:05:45,888 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1635 ImplicationChecksByTransitivity, 1269.6ms TimeCoverageRelationStatistics Valid=1573, Invalid=4907, Unknown=0, NotChecked=0, Total=6480 [2021-06-05 08:05:45,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5986 states. [2021-06-05 08:05:45,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5986 to 4713. [2021-06-05 08:05:45,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4713 states, 4712 states have (on average 2.807300509337861) internal successors, (13228), 4712 states have internal predecessors, (13228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:45,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4713 states to 4713 states and 13228 transitions. [2021-06-05 08:05:45,952 INFO L78 Accepts]: Start accepts. Automaton has 4713 states and 13228 transitions. Word has length 165 [2021-06-05 08:05:45,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:05:45,952 INFO L482 AbstractCegarLoop]: Abstraction has 4713 states and 13228 transitions. [2021-06-05 08:05:45,952 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:45,952 INFO L276 IsEmpty]: Start isEmpty. Operand 4713 states and 13228 transitions. [2021-06-05 08:05:45,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-06-05 08:05:45,956 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:05:45,956 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:05:46,172 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 366 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable370 [2021-06-05 08:05:46,172 INFO L430 AbstractCegarLoop]: === Iteration 372 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:05:46,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:05:46,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1120521455, now seen corresponding path program 363 times [2021-06-05 08:05:46,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:05:46,173 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347581837] [2021-06-05 08:05:46,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:05:46,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:46,454 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:46,454 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:05:46,454 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347581837] [2021-06-05 08:05:46,455 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347581837] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:46,455 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935974800] [2021-06-05 08:05:46,455 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 367 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 367 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:46,539 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2021-06-05 08:05:46,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:05:46,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 42 conjunts are in the unsatisfiable core [2021-06-05 08:05:46,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:05:46,711 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:46,711 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935974800] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:46,711 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:05:46,712 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2021-06-05 08:05:46,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361580270] [2021-06-05 08:05:46,712 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-06-05 08:05:46,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:05:46,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-06-05 08:05:46,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=829, Unknown=0, NotChecked=0, Total=992 [2021-06-05 08:05:46,712 INFO L87 Difference]: Start difference. First operand 4713 states and 13228 transitions. Second operand has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:47,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:05:47,775 INFO L93 Difference]: Finished difference Result 6281 states and 16567 transitions. [2021-06-05 08:05:47,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 08:05:47,775 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-06-05 08:05:47,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:05:47,781 INFO L225 Difference]: With dead ends: 6281 [2021-06-05 08:05:47,782 INFO L226 Difference]: Without dead ends: 6011 [2021-06-05 08:05:47,782 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1723 ImplicationChecksByTransitivity, 1022.0ms TimeCoverageRelationStatistics Valid=1663, Invalid=4817, Unknown=0, NotChecked=0, Total=6480 [2021-06-05 08:05:47,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6011 states. [2021-06-05 08:05:47,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6011 to 4788. [2021-06-05 08:05:47,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4788 states, 4787 states have (on average 2.810319615625653) internal successors, (13453), 4787 states have internal predecessors, (13453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:47,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4788 states to 4788 states and 13453 transitions. [2021-06-05 08:05:47,846 INFO L78 Accepts]: Start accepts. Automaton has 4788 states and 13453 transitions. Word has length 165 [2021-06-05 08:05:47,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:05:47,847 INFO L482 AbstractCegarLoop]: Abstraction has 4788 states and 13453 transitions. [2021-06-05 08:05:47,847 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:47,847 INFO L276 IsEmpty]: Start isEmpty. Operand 4788 states and 13453 transitions. [2021-06-05 08:05:47,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-06-05 08:05:47,851 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:05:47,851 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:05:48,068 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable371,367 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:48,068 INFO L430 AbstractCegarLoop]: === Iteration 373 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:05:48,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:05:48,068 INFO L82 PathProgramCache]: Analyzing trace with hash 206234081, now seen corresponding path program 364 times [2021-06-05 08:05:48,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:05:48,068 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327050382] [2021-06-05 08:05:48,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:05:48,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:48,413 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:48,413 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:05:48,413 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327050382] [2021-06-05 08:05:48,413 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327050382] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:48,413 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664606248] [2021-06-05 08:05:48,413 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 368 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 368 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:48,500 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:05:48,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:05:48,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 33 conjunts are in the unsatisfiable core [2021-06-05 08:05:48,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:05:48,692 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:48,692 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664606248] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:48,692 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:05:48,692 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2021-06-05 08:05:48,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945454936] [2021-06-05 08:05:48,692 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-05 08:05:48,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:05:48,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-05 08:05:48,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=894, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 08:05:48,693 INFO L87 Difference]: Start difference. First operand 4788 states and 13453 transitions. Second operand has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:49,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:05:49,938 INFO L93 Difference]: Finished difference Result 6306 states and 16692 transitions. [2021-06-05 08:05:49,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-05 08:05:49,938 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-06-05 08:05:49,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:05:49,945 INFO L225 Difference]: With dead ends: 6306 [2021-06-05 08:05:49,945 INFO L226 Difference]: Without dead ends: 6036 [2021-06-05 08:05:49,946 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1765 ImplicationChecksByTransitivity, 1279.1ms TimeCoverageRelationStatistics Valid=1699, Invalid=5107, Unknown=0, NotChecked=0, Total=6806 [2021-06-05 08:05:49,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6036 states. [2021-06-05 08:05:50,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6036 to 4863. [2021-06-05 08:05:50,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4863 states, 4862 states have (on average 2.8132455779514602) internal successors, (13678), 4862 states have internal predecessors, (13678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:50,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4863 states to 4863 states and 13678 transitions. [2021-06-05 08:05:50,013 INFO L78 Accepts]: Start accepts. Automaton has 4863 states and 13678 transitions. Word has length 165 [2021-06-05 08:05:50,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:05:50,013 INFO L482 AbstractCegarLoop]: Abstraction has 4863 states and 13678 transitions. [2021-06-05 08:05:50,013 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:50,013 INFO L276 IsEmpty]: Start isEmpty. Operand 4863 states and 13678 transitions. [2021-06-05 08:05:50,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-06-05 08:05:50,017 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:05:50,017 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:05:50,234 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable372,368 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:50,234 INFO L430 AbstractCegarLoop]: === Iteration 374 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:05:50,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:05:50,234 INFO L82 PathProgramCache]: Analyzing trace with hash 660450255, now seen corresponding path program 365 times [2021-06-05 08:05:50,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:05:50,234 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726059861] [2021-06-05 08:05:50,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:05:50,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:50,544 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:50,544 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:05:50,544 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726059861] [2021-06-05 08:05:50,544 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726059861] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:50,544 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272375998] [2021-06-05 08:05:50,545 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 369 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 369 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:50,621 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2021-06-05 08:05:50,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:05:50,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 33 conjunts are in the unsatisfiable core [2021-06-05 08:05:50,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:05:50,793 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:50,794 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272375998] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:50,794 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:05:50,794 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2021-06-05 08:05:50,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797688928] [2021-06-05 08:05:50,794 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-06-05 08:05:50,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:05:50,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-06-05 08:05:50,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=818, Unknown=0, NotChecked=0, Total=992 [2021-06-05 08:05:50,794 INFO L87 Difference]: Start difference. First operand 4863 states and 13678 transitions. Second operand has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:51,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:05:51,903 INFO L93 Difference]: Finished difference Result 6331 states and 16817 transitions. [2021-06-05 08:05:51,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-05 08:05:51,903 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-06-05 08:05:51,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:05:51,910 INFO L225 Difference]: With dead ends: 6331 [2021-06-05 08:05:51,910 INFO L226 Difference]: Without dead ends: 6061 [2021-06-05 08:05:51,911 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1854 ImplicationChecksByTransitivity, 1123.5ms TimeCoverageRelationStatistics Valid=1803, Invalid=5003, Unknown=0, NotChecked=0, Total=6806 [2021-06-05 08:05:51,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6061 states. [2021-06-05 08:05:51,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6061 to 4938. [2021-06-05 08:05:51,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4938 states, 4937 states have (on average 2.8160826412801296) internal successors, (13903), 4937 states have internal predecessors, (13903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:51,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4938 states to 4938 states and 13903 transitions. [2021-06-05 08:05:51,976 INFO L78 Accepts]: Start accepts. Automaton has 4938 states and 13903 transitions. Word has length 165 [2021-06-05 08:05:51,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:05:51,977 INFO L482 AbstractCegarLoop]: Abstraction has 4938 states and 13903 transitions. [2021-06-05 08:05:51,977 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:51,977 INFO L276 IsEmpty]: Start isEmpty. Operand 4938 states and 13903 transitions. [2021-06-05 08:05:51,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-06-05 08:05:51,981 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:05:51,981 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:05:52,193 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable373,369 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:52,193 INFO L430 AbstractCegarLoop]: === Iteration 375 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:05:52,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:05:52,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1659346591, now seen corresponding path program 366 times [2021-06-05 08:05:52,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:05:52,193 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711145278] [2021-06-05 08:05:52,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:05:52,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:52,584 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:52,584 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:05:52,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711145278] [2021-06-05 08:05:52,584 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711145278] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:52,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274382377] [2021-06-05 08:05:52,584 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 370 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 370 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:52,684 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2021-06-05 08:05:52,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:05:52,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 40 conjunts are in the unsatisfiable core [2021-06-05 08:05:52,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:05:53,136 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:53,137 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274382377] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:53,137 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:05:53,137 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2021-06-05 08:05:53,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722694412] [2021-06-05 08:05:53,137 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-05 08:05:53,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:05:53,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-05 08:05:53,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=882, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 08:05:53,137 INFO L87 Difference]: Start difference. First operand 4938 states and 13903 transitions. Second operand has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:54,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:05:54,712 INFO L93 Difference]: Finished difference Result 6356 states and 16942 transitions. [2021-06-05 08:05:54,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-06-05 08:05:54,712 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-06-05 08:05:54,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:05:54,720 INFO L225 Difference]: With dead ends: 6356 [2021-06-05 08:05:54,720 INFO L226 Difference]: Without dead ends: 6086 [2021-06-05 08:05:54,721 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1829 ImplicationChecksByTransitivity, 1513.4ms TimeCoverageRelationStatistics Valid=1703, Invalid=5437, Unknown=0, NotChecked=0, Total=7140 [2021-06-05 08:05:54,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6086 states. [2021-06-05 08:05:54,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6086 to 5013. [2021-06-05 08:05:54,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5013 states, 5012 states have (on average 2.818834796488428) internal successors, (14128), 5012 states have internal predecessors, (14128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:54,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5013 states to 5013 states and 14128 transitions. [2021-06-05 08:05:54,794 INFO L78 Accepts]: Start accepts. Automaton has 5013 states and 14128 transitions. Word has length 165 [2021-06-05 08:05:54,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:05:54,795 INFO L482 AbstractCegarLoop]: Abstraction has 5013 states and 14128 transitions. [2021-06-05 08:05:54,795 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:54,795 INFO L276 IsEmpty]: Start isEmpty. Operand 5013 states and 14128 transitions. [2021-06-05 08:05:54,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-06-05 08:05:54,799 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:05:54,799 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:05:55,016 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable374,370 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:55,016 INFO L430 AbstractCegarLoop]: === Iteration 376 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:05:55,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:05:55,016 INFO L82 PathProgramCache]: Analyzing trace with hash -219981299, now seen corresponding path program 367 times [2021-06-05 08:05:55,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:05:55,016 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601015649] [2021-06-05 08:05:55,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:05:55,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:55,349 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:55,349 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:05:55,349 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601015649] [2021-06-05 08:05:55,349 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601015649] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:55,349 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685381261] [2021-06-05 08:05:55,349 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 371 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 371 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:55,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:55,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 33 conjunts are in the unsatisfiable core [2021-06-05 08:05:55,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:05:55,624 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:55,624 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685381261] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:55,624 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:05:55,624 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2021-06-05 08:05:55,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199700468] [2021-06-05 08:05:55,625 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-06-05 08:05:55,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:05:55,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-06-05 08:05:55,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=803, Unknown=0, NotChecked=0, Total=992 [2021-06-05 08:05:55,625 INFO L87 Difference]: Start difference. First operand 5013 states and 14128 transitions. Second operand has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:56,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:05:56,840 INFO L93 Difference]: Finished difference Result 6381 states and 17067 transitions. [2021-06-05 08:05:56,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-05 08:05:56,840 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-06-05 08:05:56,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:05:56,846 INFO L225 Difference]: With dead ends: 6381 [2021-06-05 08:05:56,846 INFO L226 Difference]: Without dead ends: 6111 [2021-06-05 08:05:56,846 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1989 ImplicationChecksByTransitivity, 1186.4ms TimeCoverageRelationStatistics Valid=1959, Invalid=5181, Unknown=0, NotChecked=0, Total=7140 [2021-06-05 08:05:56,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6111 states. [2021-06-05 08:05:56,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6111 to 5088. [2021-06-05 08:05:56,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5088 states, 5087 states have (on average 2.821505799095734) internal successors, (14353), 5087 states have internal predecessors, (14353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:56,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5088 states to 5088 states and 14353 transitions. [2021-06-05 08:05:56,912 INFO L78 Accepts]: Start accepts. Automaton has 5088 states and 14353 transitions. Word has length 165 [2021-06-05 08:05:56,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:05:56,912 INFO L482 AbstractCegarLoop]: Abstraction has 5088 states and 14353 transitions. [2021-06-05 08:05:56,912 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:56,912 INFO L276 IsEmpty]: Start isEmpty. Operand 5088 states and 14353 transitions. [2021-06-05 08:05:56,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-06-05 08:05:56,917 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:05:56,917 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:05:57,133 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 371 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable375 [2021-06-05 08:05:57,133 INFO L430 AbstractCegarLoop]: === Iteration 377 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:05:57,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:05:57,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1810338013, now seen corresponding path program 368 times [2021-06-05 08:05:57,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:05:57,134 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715040926] [2021-06-05 08:05:57,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:05:57,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:57,471 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:57,472 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:05:57,472 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715040926] [2021-06-05 08:05:57,472 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715040926] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:57,472 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993034365] [2021-06-05 08:05:57,472 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 372 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 372 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:57,546 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:05:57,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:05:57,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 33 conjunts are in the unsatisfiable core [2021-06-05 08:05:57,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:05:57,736 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:57,736 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993034365] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:57,736 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:05:57,736 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2021-06-05 08:05:57,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299582532] [2021-06-05 08:05:57,737 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-05 08:05:57,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:05:57,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-05 08:05:57,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=866, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 08:05:57,737 INFO L87 Difference]: Start difference. First operand 5088 states and 14353 transitions. Second operand has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:59,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:05:59,041 INFO L93 Difference]: Finished difference Result 6406 states and 17192 transitions. [2021-06-05 08:05:59,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-05 08:05:59,041 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-06-05 08:05:59,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:05:59,048 INFO L225 Difference]: With dead ends: 6406 [2021-06-05 08:05:59,048 INFO L226 Difference]: Without dead ends: 6136 [2021-06-05 08:05:59,049 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2037 ImplicationChecksByTransitivity, 1289.6ms TimeCoverageRelationStatistics Valid=1999, Invalid=5483, Unknown=0, NotChecked=0, Total=7482 [2021-06-05 08:05:59,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6136 states. [2021-06-05 08:05:59,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6136 to 5163. [2021-06-05 08:05:59,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5163 states, 5162 states have (on average 2.824099186361875) internal successors, (14578), 5162 states have internal predecessors, (14578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:59,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5163 states to 5163 states and 14578 transitions. [2021-06-05 08:05:59,120 INFO L78 Accepts]: Start accepts. Automaton has 5163 states and 14578 transitions. Word has length 165 [2021-06-05 08:05:59,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:05:59,120 INFO L482 AbstractCegarLoop]: Abstraction has 5163 states and 14578 transitions. [2021-06-05 08:05:59,120 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:05:59,120 INFO L276 IsEmpty]: Start isEmpty. Operand 5163 states and 14578 transitions. [2021-06-05 08:05:59,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-06-05 08:05:59,125 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:05:59,125 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:05:59,341 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 372 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable376 [2021-06-05 08:05:59,341 INFO L430 AbstractCegarLoop]: === Iteration 378 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:05:59,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:05:59,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1870389813, now seen corresponding path program 369 times [2021-06-05 08:05:59,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:05:59,341 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654497666] [2021-06-05 08:05:59,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:05:59,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:05:59,673 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:59,673 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:05:59,673 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654497666] [2021-06-05 08:05:59,673 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654497666] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:59,673 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753855618] [2021-06-05 08:05:59,673 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 373 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 373 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:05:59,786 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2021-06-05 08:05:59,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:05:59,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-05 08:05:59,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:05:59,973 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:05:59,973 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753855618] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:05:59,974 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:05:59,974 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2021-06-05 08:05:59,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126411703] [2021-06-05 08:05:59,974 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-06-05 08:05:59,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:05:59,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-06-05 08:05:59,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=784, Unknown=0, NotChecked=0, Total=992 [2021-06-05 08:05:59,974 INFO L87 Difference]: Start difference. First operand 5163 states and 14578 transitions. Second operand has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:01,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:06:01,118 INFO L93 Difference]: Finished difference Result 6431 states and 17317 transitions. [2021-06-05 08:06:01,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-06-05 08:06:01,118 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-06-05 08:06:01,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:06:01,125 INFO L225 Difference]: With dead ends: 6431 [2021-06-05 08:06:01,126 INFO L226 Difference]: Without dead ends: 6161 [2021-06-05 08:06:01,126 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2128 ImplicationChecksByTransitivity, 1163.6ms TimeCoverageRelationStatistics Valid=2131, Invalid=5351, Unknown=0, NotChecked=0, Total=7482 [2021-06-05 08:06:01,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6161 states. [2021-06-05 08:06:01,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6161 to 5238. [2021-06-05 08:06:01,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5238 states, 5237 states have (on average 2.8266182929157915) internal successors, (14803), 5237 states have internal predecessors, (14803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:01,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5238 states to 5238 states and 14803 transitions. [2021-06-05 08:06:01,196 INFO L78 Accepts]: Start accepts. Automaton has 5238 states and 14803 transitions. Word has length 165 [2021-06-05 08:06:01,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:06:01,196 INFO L482 AbstractCegarLoop]: Abstraction has 5238 states and 14803 transitions. [2021-06-05 08:06:01,196 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:01,197 INFO L276 IsEmpty]: Start isEmpty. Operand 5238 states and 14803 transitions. [2021-06-05 08:06:01,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-06-05 08:06:01,201 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:06:01,201 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:06:01,417 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 373 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable377 [2021-06-05 08:06:01,418 INFO L430 AbstractCegarLoop]: === Iteration 379 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:06:01,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:06:01,418 INFO L82 PathProgramCache]: Analyzing trace with hash 709335195, now seen corresponding path program 370 times [2021-06-05 08:06:01,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:06:01,418 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279795528] [2021-06-05 08:06:01,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:06:01,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:01,701 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:01,701 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:06:01,701 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279795528] [2021-06-05 08:06:01,701 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279795528] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:01,701 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251914601] [2021-06-05 08:06:01,701 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 374 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 374 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:01,779 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:06:01,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:06:01,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 33 conjunts are in the unsatisfiable core [2021-06-05 08:06:01,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:06:01,964 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:01,964 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251914601] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:01,964 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:06:01,965 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2021-06-05 08:06:01,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261126909] [2021-06-05 08:06:01,965 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-05 08:06:01,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:06:01,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-05 08:06:01,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=846, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 08:06:01,977 INFO L87 Difference]: Start difference. First operand 5238 states and 14803 transitions. Second operand has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:03,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:06:03,425 INFO L93 Difference]: Finished difference Result 6516 states and 17607 transitions. [2021-06-05 08:06:03,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-06-05 08:06:03,426 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-06-05 08:06:03,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:06:03,433 INFO L225 Difference]: With dead ends: 6516 [2021-06-05 08:06:03,433 INFO L226 Difference]: Without dead ends: 6246 [2021-06-05 08:06:03,434 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2179 ImplicationChecksByTransitivity, 1416.5ms TimeCoverageRelationStatistics Valid=2173, Invalid=5659, Unknown=0, NotChecked=0, Total=7832 [2021-06-05 08:06:03,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6246 states. [2021-06-05 08:06:03,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6246 to 5313. [2021-06-05 08:06:03,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5313 states, 5312 states have (on average 2.8328313253012047) internal successors, (15048), 5312 states have internal predecessors, (15048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:03,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5313 states to 5313 states and 15048 transitions. [2021-06-05 08:06:03,510 INFO L78 Accepts]: Start accepts. Automaton has 5313 states and 15048 transitions. Word has length 165 [2021-06-05 08:06:03,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:06:03,511 INFO L482 AbstractCegarLoop]: Abstraction has 5313 states and 15048 transitions. [2021-06-05 08:06:03,511 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:03,511 INFO L276 IsEmpty]: Start isEmpty. Operand 5313 states and 15048 transitions. [2021-06-05 08:06:03,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-06-05 08:06:03,515 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:06:03,516 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:06:03,732 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 374 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable378 [2021-06-05 08:06:03,732 INFO L430 AbstractCegarLoop]: === Iteration 380 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:06:03,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:06:03,732 INFO L82 PathProgramCache]: Analyzing trace with hash -323312407, now seen corresponding path program 371 times [2021-06-05 08:06:03,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:06:03,732 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775313121] [2021-06-05 08:06:03,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:06:03,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:04,010 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:04,011 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:06:04,011 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775313121] [2021-06-05 08:06:04,011 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775313121] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:04,011 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764282071] [2021-06-05 08:06:04,011 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 375 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 375 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:04,094 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2021-06-05 08:06:04,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:06:04,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 33 conjunts are in the unsatisfiable core [2021-06-05 08:06:04,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:06:04,263 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:04,263 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764282071] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:04,263 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:06:04,263 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2021-06-05 08:06:04,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698727735] [2021-06-05 08:06:04,263 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-06-05 08:06:04,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:06:04,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-06-05 08:06:04,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=761, Unknown=0, NotChecked=0, Total=992 [2021-06-05 08:06:04,264 INFO L87 Difference]: Start difference. First operand 5313 states and 15048 transitions. Second operand has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:05,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:06:05,394 INFO L93 Difference]: Finished difference Result 7258 states and 19731 transitions. [2021-06-05 08:06:05,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-05 08:06:05,395 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-06-05 08:06:05,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:06:05,403 INFO L225 Difference]: With dead ends: 7258 [2021-06-05 08:06:05,403 INFO L226 Difference]: Without dead ends: 6988 [2021-06-05 08:06:05,404 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2270 ImplicationChecksByTransitivity, 1071.7ms TimeCoverageRelationStatistics Valid=2320, Invalid=5512, Unknown=0, NotChecked=0, Total=7832 [2021-06-05 08:06:05,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6988 states. [2021-06-05 08:06:05,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6988 to 5493. [2021-06-05 08:06:05,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5493 states, 5492 states have (on average 2.841769847050255) internal successors, (15607), 5492 states have internal predecessors, (15607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:05,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5493 states to 5493 states and 15607 transitions. [2021-06-05 08:06:05,476 INFO L78 Accepts]: Start accepts. Automaton has 5493 states and 15607 transitions. Word has length 165 [2021-06-05 08:06:05,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:06:05,477 INFO L482 AbstractCegarLoop]: Abstraction has 5493 states and 15607 transitions. [2021-06-05 08:06:05,477 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:05,477 INFO L276 IsEmpty]: Start isEmpty. Operand 5493 states and 15607 transitions. [2021-06-05 08:06:05,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-06-05 08:06:05,481 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:06:05,481 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:06:05,682 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable379,375 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:05,682 INFO L430 AbstractCegarLoop]: === Iteration 381 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:06:05,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:06:05,682 INFO L82 PathProgramCache]: Analyzing trace with hash -300969157, now seen corresponding path program 372 times [2021-06-05 08:06:05,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:06:05,682 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122436016] [2021-06-05 08:06:05,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:06:05,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:05,959 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:05,960 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:06:05,960 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122436016] [2021-06-05 08:06:05,960 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122436016] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:05,960 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526010493] [2021-06-05 08:06:05,960 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 376 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 376 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:06,049 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2021-06-05 08:06:06,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:06:06,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 08:06:06,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:06:06,236 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:06,237 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526010493] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:06,237 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:06:06,237 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2021-06-05 08:06:06,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146295251] [2021-06-05 08:06:06,251 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-05 08:06:06,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:06:06,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-05 08:06:06,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=822, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 08:06:06,251 INFO L87 Difference]: Start difference. First operand 5493 states and 15607 transitions. Second operand has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:07,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:06:07,639 INFO L93 Difference]: Finished difference Result 6720 states and 18381 transitions. [2021-06-05 08:06:07,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-05 08:06:07,639 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-06-05 08:06:07,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:06:07,647 INFO L225 Difference]: With dead ends: 6720 [2021-06-05 08:06:07,647 INFO L226 Difference]: Without dead ends: 6231 [2021-06-05 08:06:07,648 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2213 ImplicationChecksByTransitivity, 1331.5ms TimeCoverageRelationStatistics Valid=2129, Invalid=6061, Unknown=0, NotChecked=0, Total=8190 [2021-06-05 08:06:07,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6231 states. [2021-06-05 08:06:07,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6231 to 3434. [2021-06-05 08:06:07,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3434 states, 3433 states have (on average 2.7427905621905038) internal successors, (9416), 3433 states have internal predecessors, (9416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:07,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3434 states to 3434 states and 9416 transitions. [2021-06-05 08:06:07,698 INFO L78 Accepts]: Start accepts. Automaton has 3434 states and 9416 transitions. Word has length 165 [2021-06-05 08:06:07,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:06:07,699 INFO L482 AbstractCegarLoop]: Abstraction has 3434 states and 9416 transitions. [2021-06-05 08:06:07,699 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 33 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:07,699 INFO L276 IsEmpty]: Start isEmpty. Operand 3434 states and 9416 transitions. [2021-06-05 08:06:07,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-06-05 08:06:07,702 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:06:07,702 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:06:07,918 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 376 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable380 [2021-06-05 08:06:07,918 INFO L430 AbstractCegarLoop]: === Iteration 382 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:06:07,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:06:07,919 INFO L82 PathProgramCache]: Analyzing trace with hash 33638321, now seen corresponding path program 373 times [2021-06-05 08:06:07,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:06:07,919 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328904744] [2021-06-05 08:06:07,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:06:07,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:08,332 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:08,332 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:06:08,332 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328904744] [2021-06-05 08:06:08,332 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328904744] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:08,332 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807984408] [2021-06-05 08:06:08,332 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 377 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 377 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:08,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:08,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 08:06:08,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:06:08,646 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:08,646 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807984408] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:08,646 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:06:08,647 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 36 [2021-06-05 08:06:08,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845115860] [2021-06-05 08:06:08,647 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:06:08,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:06:08,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:06:08,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=976, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:06:08,647 INFO L87 Difference]: Start difference. First operand 3434 states and 9416 transitions. Second operand has 36 states, 36 states have (on average 5.5) internal successors, (198), 36 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:09,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:06:09,407 INFO L93 Difference]: Finished difference Result 4774 states and 12416 transitions. [2021-06-05 08:06:09,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 08:06:09,408 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.5) internal successors, (198), 36 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-06-05 08:06:09,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:06:09,413 INFO L225 Difference]: With dead ends: 4774 [2021-06-05 08:06:09,413 INFO L226 Difference]: Without dead ends: 4440 [2021-06-05 08:06:09,414 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 968.3ms TimeCoverageRelationStatistics Valid=1320, Invalid=3510, Unknown=0, NotChecked=0, Total=4830 [2021-06-05 08:06:09,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4440 states. [2021-06-05 08:06:09,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4440 to 3519. [2021-06-05 08:06:09,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3519 states, 3518 states have (on average 2.72484366117112) internal successors, (9586), 3518 states have internal predecessors, (9586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:09,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3519 states to 3519 states and 9586 transitions. [2021-06-05 08:06:09,459 INFO L78 Accepts]: Start accepts. Automaton has 3519 states and 9586 transitions. Word has length 170 [2021-06-05 08:06:09,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:06:09,459 INFO L482 AbstractCegarLoop]: Abstraction has 3519 states and 9586 transitions. [2021-06-05 08:06:09,459 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.5) internal successors, (198), 36 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:09,460 INFO L276 IsEmpty]: Start isEmpty. Operand 3519 states and 9586 transitions. [2021-06-05 08:06:09,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-06-05 08:06:09,464 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:06:09,464 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:06:09,677 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable381,377 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:09,677 INFO L430 AbstractCegarLoop]: === Iteration 383 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:06:09,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:06:09,680 INFO L82 PathProgramCache]: Analyzing trace with hash 117467253, now seen corresponding path program 374 times [2021-06-05 08:06:09,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:06:09,682 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311066115] [2021-06-05 08:06:09,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:06:09,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:10,105 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:10,106 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:06:10,106 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311066115] [2021-06-05 08:06:10,106 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311066115] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:10,106 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844701977] [2021-06-05 08:06:10,106 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 378 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 378 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:10,181 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:06:10,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:06:10,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 08:06:10,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:06:10,388 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:10,388 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844701977] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:10,391 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:06:10,392 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2021-06-05 08:06:10,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653563229] [2021-06-05 08:06:10,394 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-05 08:06:10,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:06:10,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-05 08:06:10,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=810, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 08:06:10,402 INFO L87 Difference]: Start difference. First operand 3519 states and 9586 transitions. Second operand has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:11,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:06:11,085 INFO L93 Difference]: Finished difference Result 6096 states and 14997 transitions. [2021-06-05 08:06:11,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 08:06:11,085 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-06-05 08:06:11,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:06:11,092 INFO L225 Difference]: With dead ends: 6096 [2021-06-05 08:06:11,092 INFO L226 Difference]: Without dead ends: 5826 [2021-06-05 08:06:11,095 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 872.5ms TimeCoverageRelationStatistics Valid=1132, Invalid=2900, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 08:06:11,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5826 states. [2021-06-05 08:06:11,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5826 to 3663. [2021-06-05 08:06:11,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3663 states, 3662 states have (on average 2.7315674494811577) internal successors, (10003), 3662 states have internal predecessors, (10003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:11,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3663 states to 3663 states and 10003 transitions. [2021-06-05 08:06:11,144 INFO L78 Accepts]: Start accepts. Automaton has 3663 states and 10003 transitions. Word has length 170 [2021-06-05 08:06:11,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:06:11,144 INFO L482 AbstractCegarLoop]: Abstraction has 3663 states and 10003 transitions. [2021-06-05 08:06:11,144 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:11,144 INFO L276 IsEmpty]: Start isEmpty. Operand 3663 states and 10003 transitions. [2021-06-05 08:06:11,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-06-05 08:06:11,147 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:06:11,148 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:06:11,353 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable382,378 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:11,353 INFO L430 AbstractCegarLoop]: === Iteration 384 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:06:11,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:06:11,353 INFO L82 PathProgramCache]: Analyzing trace with hash 815182661, now seen corresponding path program 375 times [2021-06-05 08:06:11,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:06:11,355 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608687407] [2021-06-05 08:06:11,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:06:11,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:11,797 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:11,797 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:06:11,797 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608687407] [2021-06-05 08:06:11,797 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608687407] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:11,798 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013296697] [2021-06-05 08:06:11,798 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 379 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 379 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:11,887 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-06-05 08:06:11,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:06:11,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 08:06:11,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:06:12,146 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:12,146 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013296697] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:12,146 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:06:12,146 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2021-06-05 08:06:12,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328264604] [2021-06-05 08:06:12,147 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-06-05 08:06:12,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:06:12,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-06-05 08:06:12,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=886, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 08:06:12,147 INFO L87 Difference]: Start difference. First operand 3663 states and 10003 transitions. Second operand has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:12,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:06:12,908 INFO L93 Difference]: Finished difference Result 6056 states and 14992 transitions. [2021-06-05 08:06:12,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 08:06:12,909 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-06-05 08:06:12,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:06:12,915 INFO L225 Difference]: With dead ends: 6056 [2021-06-05 08:06:12,915 INFO L226 Difference]: Without dead ends: 5786 [2021-06-05 08:06:12,915 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 817 ImplicationChecksByTransitivity, 926.5ms TimeCoverageRelationStatistics Valid=1215, Invalid=3341, Unknown=0, NotChecked=0, Total=4556 [2021-06-05 08:06:12,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5786 states. [2021-06-05 08:06:12,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5786 to 3738. [2021-06-05 08:06:12,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3738 states, 3737 states have (on average 2.7369547765587368) internal successors, (10228), 3737 states have internal predecessors, (10228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:12,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3738 states to 3738 states and 10228 transitions. [2021-06-05 08:06:12,968 INFO L78 Accepts]: Start accepts. Automaton has 3738 states and 10228 transitions. Word has length 170 [2021-06-05 08:06:12,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:06:12,969 INFO L482 AbstractCegarLoop]: Abstraction has 3738 states and 10228 transitions. [2021-06-05 08:06:12,969 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:12,969 INFO L276 IsEmpty]: Start isEmpty. Operand 3738 states and 10228 transitions. [2021-06-05 08:06:12,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-06-05 08:06:12,972 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:06:12,972 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:06:13,190 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable383,379 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:13,190 INFO L430 AbstractCegarLoop]: === Iteration 385 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:06:13,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:06:13,205 INFO L82 PathProgramCache]: Analyzing trace with hash -904699981, now seen corresponding path program 376 times [2021-06-05 08:06:13,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:06:13,205 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455830958] [2021-06-05 08:06:13,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:06:13,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:13,608 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:13,608 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:06:13,608 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455830958] [2021-06-05 08:06:13,608 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455830958] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:13,608 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574258738] [2021-06-05 08:06:13,608 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 380 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 380 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:13,717 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:06:13,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:06:13,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 08:06:13,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:06:13,910 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:13,911 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574258738] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:13,911 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:06:13,911 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2021-06-05 08:06:13,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939809650] [2021-06-05 08:06:13,911 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-05 08:06:13,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:06:13,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-05 08:06:13,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=834, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 08:06:13,912 INFO L87 Difference]: Start difference. First operand 3738 states and 10228 transitions. Second operand has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:14,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:06:14,608 INFO L93 Difference]: Finished difference Result 6106 states and 15167 transitions. [2021-06-05 08:06:14,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 08:06:14,608 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-06-05 08:06:14,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:06:14,614 INFO L225 Difference]: With dead ends: 6106 [2021-06-05 08:06:14,614 INFO L226 Difference]: Without dead ends: 5836 [2021-06-05 08:06:14,615 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 802 ImplicationChecksByTransitivity, 830.7ms TimeCoverageRelationStatistics Valid=1129, Invalid=3161, Unknown=0, NotChecked=0, Total=4290 [2021-06-05 08:06:14,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5836 states. [2021-06-05 08:06:14,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5836 to 3813. [2021-06-05 08:06:14,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3813 states, 3812 states have (on average 2.742130115424974) internal successors, (10453), 3812 states have internal predecessors, (10453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:14,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3813 states to 3813 states and 10453 transitions. [2021-06-05 08:06:14,666 INFO L78 Accepts]: Start accepts. Automaton has 3813 states and 10453 transitions. Word has length 170 [2021-06-05 08:06:14,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:06:14,667 INFO L482 AbstractCegarLoop]: Abstraction has 3813 states and 10453 transitions. [2021-06-05 08:06:14,667 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:14,667 INFO L276 IsEmpty]: Start isEmpty. Operand 3813 states and 10453 transitions. [2021-06-05 08:06:14,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-06-05 08:06:14,670 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:06:14,670 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:06:14,883 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable384,380 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:14,883 INFO L430 AbstractCegarLoop]: === Iteration 386 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:06:14,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:06:14,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1406013821, now seen corresponding path program 377 times [2021-06-05 08:06:14,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:06:14,884 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271997789] [2021-06-05 08:06:14,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:06:14,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:15,281 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:15,281 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:06:15,281 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271997789] [2021-06-05 08:06:15,281 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271997789] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:15,281 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62176859] [2021-06-05 08:06:15,282 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 381 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 381 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:15,361 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2021-06-05 08:06:15,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:06:15,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 08:06:15,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:06:15,568 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:15,569 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62176859] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:15,569 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:06:15,569 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2021-06-05 08:06:15,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273578476] [2021-06-05 08:06:15,569 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-06-05 08:06:15,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:06:15,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-06-05 08:06:15,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=909, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 08:06:15,569 INFO L87 Difference]: Start difference. First operand 3813 states and 10453 transitions. Second operand has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:16,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:06:16,420 INFO L93 Difference]: Finished difference Result 6131 states and 15292 transitions. [2021-06-05 08:06:16,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 08:06:16,420 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-06-05 08:06:16,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:06:16,427 INFO L225 Difference]: With dead ends: 6131 [2021-06-05 08:06:16,427 INFO L226 Difference]: Without dead ends: 5861 [2021-06-05 08:06:16,427 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 911 ImplicationChecksByTransitivity, 965.3ms TimeCoverageRelationStatistics Valid=1220, Invalid=3610, Unknown=0, NotChecked=0, Total=4830 [2021-06-05 08:06:16,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5861 states. [2021-06-05 08:06:16,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5861 to 3888. [2021-06-05 08:06:16,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3888 states, 3887 states have (on average 2.7471057370722924) internal successors, (10678), 3887 states have internal predecessors, (10678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:16,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3888 states to 3888 states and 10678 transitions. [2021-06-05 08:06:16,479 INFO L78 Accepts]: Start accepts. Automaton has 3888 states and 10678 transitions. Word has length 170 [2021-06-05 08:06:16,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:06:16,479 INFO L482 AbstractCegarLoop]: Abstraction has 3888 states and 10678 transitions. [2021-06-05 08:06:16,479 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:16,480 INFO L276 IsEmpty]: Start isEmpty. Operand 3888 states and 10678 transitions. [2021-06-05 08:06:16,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-06-05 08:06:16,483 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:06:16,483 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:06:16,696 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable385,381 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:16,696 INFO L430 AbstractCegarLoop]: === Iteration 387 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:06:16,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:06:16,697 INFO L82 PathProgramCache]: Analyzing trace with hash -929518479, now seen corresponding path program 378 times [2021-06-05 08:06:16,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:06:16,697 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063007026] [2021-06-05 08:06:16,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:06:16,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:17,073 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:17,073 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:06:17,073 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063007026] [2021-06-05 08:06:17,073 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063007026] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:17,073 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978853975] [2021-06-05 08:06:17,073 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 382 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 382 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:17,169 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2021-06-05 08:06:17,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:06:17,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 08:06:17,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:06:17,369 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:17,369 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978853975] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:17,370 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:06:17,370 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2021-06-05 08:06:17,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668831683] [2021-06-05 08:06:17,370 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-05 08:06:17,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:06:17,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-05 08:06:17,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=854, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 08:06:17,370 INFO L87 Difference]: Start difference. First operand 3888 states and 10678 transitions. Second operand has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:18,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:06:18,134 INFO L93 Difference]: Finished difference Result 6156 states and 15417 transitions. [2021-06-05 08:06:18,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 08:06:18,134 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-06-05 08:06:18,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:06:18,140 INFO L225 Difference]: With dead ends: 6156 [2021-06-05 08:06:18,140 INFO L226 Difference]: Without dead ends: 5886 [2021-06-05 08:06:18,141 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 894 ImplicationChecksByTransitivity, 884.2ms TimeCoverageRelationStatistics Valid=1142, Invalid=3414, Unknown=0, NotChecked=0, Total=4556 [2021-06-05 08:06:18,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5886 states. [2021-06-05 08:06:18,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5886 to 3963. [2021-06-05 08:06:18,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3963 states, 3962 states have (on average 2.7518929833417465) internal successors, (10903), 3962 states have internal predecessors, (10903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:18,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3963 states to 3963 states and 10903 transitions. [2021-06-05 08:06:18,191 INFO L78 Accepts]: Start accepts. Automaton has 3963 states and 10903 transitions. Word has length 170 [2021-06-05 08:06:18,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:06:18,191 INFO L482 AbstractCegarLoop]: Abstraction has 3963 states and 10903 transitions. [2021-06-05 08:06:18,191 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:18,191 INFO L276 IsEmpty]: Start isEmpty. Operand 3963 states and 10903 transitions. [2021-06-05 08:06:18,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-06-05 08:06:18,194 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:06:18,194 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:06:18,411 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 382 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable386 [2021-06-05 08:06:18,411 INFO L430 AbstractCegarLoop]: === Iteration 388 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:06:18,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:06:18,411 INFO L82 PathProgramCache]: Analyzing trace with hash 537165633, now seen corresponding path program 379 times [2021-06-05 08:06:18,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:06:18,411 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108477941] [2021-06-05 08:06:18,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:06:18,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:18,794 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:18,795 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:06:18,795 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108477941] [2021-06-05 08:06:18,795 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108477941] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:18,795 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844101158] [2021-06-05 08:06:18,795 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 383 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 383 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:18,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:18,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 08:06:18,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:06:19,085 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:19,085 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844101158] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:19,085 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:06:19,085 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2021-06-05 08:06:19,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495759222] [2021-06-05 08:06:19,085 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-06-05 08:06:19,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:06:19,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-06-05 08:06:19,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=928, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 08:06:19,085 INFO L87 Difference]: Start difference. First operand 3963 states and 10903 transitions. Second operand has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:19,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:06:19,946 INFO L93 Difference]: Finished difference Result 6181 states and 15542 transitions. [2021-06-05 08:06:19,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 08:06:19,947 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-06-05 08:06:19,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:06:19,951 INFO L225 Difference]: With dead ends: 6181 [2021-06-05 08:06:19,951 INFO L226 Difference]: Without dead ends: 5911 [2021-06-05 08:06:19,952 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1010 ImplicationChecksByTransitivity, 1006.1ms TimeCoverageRelationStatistics Valid=1241, Invalid=3871, Unknown=0, NotChecked=0, Total=5112 [2021-06-05 08:06:19,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5911 states. [2021-06-05 08:06:19,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5911 to 4038. [2021-06-05 08:06:19,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4038 states, 4037 states have (on average 2.7565023532325985) internal successors, (11128), 4037 states have internal predecessors, (11128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:20,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4038 states to 4038 states and 11128 transitions. [2021-06-05 08:06:20,002 INFO L78 Accepts]: Start accepts. Automaton has 4038 states and 11128 transitions. Word has length 170 [2021-06-05 08:06:20,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:06:20,002 INFO L482 AbstractCegarLoop]: Abstraction has 4038 states and 11128 transitions. [2021-06-05 08:06:20,002 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:20,002 INFO L276 IsEmpty]: Start isEmpty. Operand 4038 states and 11128 transitions. [2021-06-05 08:06:20,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-06-05 08:06:20,005 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:06:20,005 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:06:20,222 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 383 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable387 [2021-06-05 08:06:20,222 INFO L430 AbstractCegarLoop]: === Iteration 389 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:06:20,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:06:20,222 INFO L82 PathProgramCache]: Analyzing trace with hash 401944239, now seen corresponding path program 380 times [2021-06-05 08:06:20,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:06:20,222 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659381325] [2021-06-05 08:06:20,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:06:20,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:20,571 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:20,571 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:06:20,571 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659381325] [2021-06-05 08:06:20,571 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659381325] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:20,571 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623041209] [2021-06-05 08:06:20,572 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 384 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 384 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:20,681 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:06:20,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:06:20,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 08:06:20,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:06:20,943 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:20,944 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623041209] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:20,944 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:06:20,944 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2021-06-05 08:06:20,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045346359] [2021-06-05 08:06:20,944 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-05 08:06:20,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:06:20,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-05 08:06:20,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=870, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 08:06:20,944 INFO L87 Difference]: Start difference. First operand 4038 states and 11128 transitions. Second operand has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:21,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:06:21,743 INFO L93 Difference]: Finished difference Result 6206 states and 15667 transitions. [2021-06-05 08:06:21,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 08:06:21,743 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-06-05 08:06:21,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:06:21,749 INFO L225 Difference]: With dead ends: 6206 [2021-06-05 08:06:21,750 INFO L226 Difference]: Without dead ends: 5936 [2021-06-05 08:06:21,750 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 990 ImplicationChecksByTransitivity, 874.8ms TimeCoverageRelationStatistics Valid=1171, Invalid=3659, Unknown=0, NotChecked=0, Total=4830 [2021-06-05 08:06:21,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5936 states. [2021-06-05 08:06:21,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5936 to 4113. [2021-06-05 08:06:21,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4113 states, 4112 states have (on average 2.760943579766537) internal successors, (11353), 4112 states have internal predecessors, (11353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:21,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4113 states to 4113 states and 11353 transitions. [2021-06-05 08:06:21,804 INFO L78 Accepts]: Start accepts. Automaton has 4113 states and 11353 transitions. Word has length 170 [2021-06-05 08:06:21,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:06:21,804 INFO L482 AbstractCegarLoop]: Abstraction has 4113 states and 11353 transitions. [2021-06-05 08:06:21,804 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:21,804 INFO L276 IsEmpty]: Start isEmpty. Operand 4113 states and 11353 transitions. [2021-06-05 08:06:21,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-06-05 08:06:21,808 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:06:21,808 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:06:22,017 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 384 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable388 [2021-06-05 08:06:22,017 INFO L430 AbstractCegarLoop]: === Iteration 390 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:06:22,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:06:22,017 INFO L82 PathProgramCache]: Analyzing trace with hash -474790529, now seen corresponding path program 381 times [2021-06-05 08:06:22,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:06:22,017 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314132288] [2021-06-05 08:06:22,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:06:22,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:22,380 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:22,380 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:06:22,380 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314132288] [2021-06-05 08:06:22,380 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314132288] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:22,380 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365033794] [2021-06-05 08:06:22,380 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 385 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 385 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:22,470 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-06-05 08:06:22,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:06:22,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 55 conjunts are in the unsatisfiable core [2021-06-05 08:06:22,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:06:22,672 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:22,672 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365033794] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:22,672 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:06:22,672 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2021-06-05 08:06:22,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781838987] [2021-06-05 08:06:22,672 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-06-05 08:06:22,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:06:22,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-06-05 08:06:22,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=943, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 08:06:22,673 INFO L87 Difference]: Start difference. First operand 4113 states and 11353 transitions. Second operand has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:23,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:06:23,819 INFO L93 Difference]: Finished difference Result 6231 states and 15792 transitions. [2021-06-05 08:06:23,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 08:06:23,819 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-06-05 08:06:23,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:06:23,824 INFO L225 Difference]: With dead ends: 6231 [2021-06-05 08:06:23,825 INFO L226 Difference]: Without dead ends: 5961 [2021-06-05 08:06:23,825 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1014 ImplicationChecksByTransitivity, 1208.0ms TimeCoverageRelationStatistics Valid=1180, Invalid=3932, Unknown=0, NotChecked=0, Total=5112 [2021-06-05 08:06:23,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5961 states. [2021-06-05 08:06:23,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5961 to 4188. [2021-06-05 08:06:23,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4188 states, 4187 states have (on average 2.7652256985908763) internal successors, (11578), 4187 states have internal predecessors, (11578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:23,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4188 states to 4188 states and 11578 transitions. [2021-06-05 08:06:23,878 INFO L78 Accepts]: Start accepts. Automaton has 4188 states and 11578 transitions. Word has length 170 [2021-06-05 08:06:23,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:06:23,878 INFO L482 AbstractCegarLoop]: Abstraction has 4188 states and 11578 transitions. [2021-06-05 08:06:23,878 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:23,878 INFO L276 IsEmpty]: Start isEmpty. Operand 4188 states and 11578 transitions. [2021-06-05 08:06:23,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-06-05 08:06:23,882 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:06:23,882 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:06:24,098 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 385 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable389 [2021-06-05 08:06:24,098 INFO L430 AbstractCegarLoop]: === Iteration 391 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:06:24,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:06:24,099 INFO L82 PathProgramCache]: Analyzing trace with hash 2082850413, now seen corresponding path program 382 times [2021-06-05 08:06:24,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:06:24,099 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751122625] [2021-06-05 08:06:24,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:06:24,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:24,430 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:24,430 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:06:24,430 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751122625] [2021-06-05 08:06:24,430 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751122625] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:24,430 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398466169] [2021-06-05 08:06:24,430 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 386 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 386 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:24,514 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:06:24,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:06:24,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 08:06:24,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:06:24,705 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:24,705 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398466169] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:24,705 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:06:24,705 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2021-06-05 08:06:24,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363080987] [2021-06-05 08:06:24,706 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-05 08:06:24,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:06:24,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-05 08:06:24,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=882, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 08:06:24,706 INFO L87 Difference]: Start difference. First operand 4188 states and 11578 transitions. Second operand has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:25,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:06:25,539 INFO L93 Difference]: Finished difference Result 6256 states and 15917 transitions. [2021-06-05 08:06:25,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 08:06:25,540 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-06-05 08:06:25,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:06:25,546 INFO L225 Difference]: With dead ends: 6256 [2021-06-05 08:06:25,546 INFO L226 Difference]: Without dead ends: 5986 [2021-06-05 08:06:25,547 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1090 ImplicationChecksByTransitivity, 866.0ms TimeCoverageRelationStatistics Valid=1216, Invalid=3896, Unknown=0, NotChecked=0, Total=5112 [2021-06-05 08:06:25,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5986 states. [2021-06-05 08:06:25,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5986 to 4263. [2021-06-05 08:06:25,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4263 states, 4262 states have (on average 2.7693571093383387) internal successors, (11803), 4262 states have internal predecessors, (11803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:25,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4263 states to 4263 states and 11803 transitions. [2021-06-05 08:06:25,605 INFO L78 Accepts]: Start accepts. Automaton has 4263 states and 11803 transitions. Word has length 170 [2021-06-05 08:06:25,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:06:25,605 INFO L482 AbstractCegarLoop]: Abstraction has 4263 states and 11803 transitions. [2021-06-05 08:06:25,605 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:25,605 INFO L276 IsEmpty]: Start isEmpty. Operand 4263 states and 11803 transitions. [2021-06-05 08:06:25,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-06-05 08:06:25,609 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:06:25,609 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:06:25,825 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable390,386 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:25,825 INFO L430 AbstractCegarLoop]: === Iteration 392 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:06:25,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:06:25,825 INFO L82 PathProgramCache]: Analyzing trace with hash -847568579, now seen corresponding path program 383 times [2021-06-05 08:06:25,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:06:25,825 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005263950] [2021-06-05 08:06:25,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:06:25,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:26,164 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:26,164 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:06:26,164 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005263950] [2021-06-05 08:06:26,164 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005263950] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:26,164 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186074974] [2021-06-05 08:06:26,164 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 387 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 387 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:26,241 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2021-06-05 08:06:26,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:06:26,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 08:06:26,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:06:26,465 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:26,466 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186074974] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:26,466 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:06:26,466 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2021-06-05 08:06:26,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624270830] [2021-06-05 08:06:26,466 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-06-05 08:06:26,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:06:26,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-06-05 08:06:26,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=954, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 08:06:26,466 INFO L87 Difference]: Start difference. First operand 4263 states and 11803 transitions. Second operand has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:27,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:06:27,539 INFO L93 Difference]: Finished difference Result 6281 states and 16042 transitions. [2021-06-05 08:06:27,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-05 08:06:27,540 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-06-05 08:06:27,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:06:27,545 INFO L225 Difference]: With dead ends: 6281 [2021-06-05 08:06:27,545 INFO L226 Difference]: Without dead ends: 6011 [2021-06-05 08:06:27,545 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1220 ImplicationChecksByTransitivity, 1085.2ms TimeCoverageRelationStatistics Valid=1331, Invalid=4369, Unknown=0, NotChecked=0, Total=5700 [2021-06-05 08:06:27,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6011 states. [2021-06-05 08:06:27,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6011 to 4338. [2021-06-05 08:06:27,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4338 states, 4337 states have (on average 2.7733456306202444) internal successors, (12028), 4337 states have internal predecessors, (12028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:27,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4338 states to 4338 states and 12028 transitions. [2021-06-05 08:06:27,601 INFO L78 Accepts]: Start accepts. Automaton has 4338 states and 12028 transitions. Word has length 170 [2021-06-05 08:06:27,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:06:27,601 INFO L482 AbstractCegarLoop]: Abstraction has 4338 states and 12028 transitions. [2021-06-05 08:06:27,601 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:27,601 INFO L276 IsEmpty]: Start isEmpty. Operand 4338 states and 12028 transitions. [2021-06-05 08:06:27,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-06-05 08:06:27,605 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:06:27,605 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:06:27,813 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable391,387 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:27,813 INFO L430 AbstractCegarLoop]: === Iteration 393 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:06:27,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:06:27,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1170166699, now seen corresponding path program 384 times [2021-06-05 08:06:27,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:06:27,813 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508063962] [2021-06-05 08:06:27,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:06:27,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:28,150 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:28,150 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:06:28,150 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508063962] [2021-06-05 08:06:28,150 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508063962] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:28,150 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830253045] [2021-06-05 08:06:28,150 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 388 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 388 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:28,239 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2021-06-05 08:06:28,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:06:28,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 08:06:28,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:06:28,428 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:28,429 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830253045] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:28,429 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:06:28,429 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2021-06-05 08:06:28,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62046204] [2021-06-05 08:06:28,429 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-05 08:06:28,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:06:28,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-05 08:06:28,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=890, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 08:06:28,429 INFO L87 Difference]: Start difference. First operand 4338 states and 12028 transitions. Second operand has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:29,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:06:29,303 INFO L93 Difference]: Finished difference Result 6306 states and 16167 transitions. [2021-06-05 08:06:29,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 08:06:29,303 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-06-05 08:06:29,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:06:29,309 INFO L225 Difference]: With dead ends: 6306 [2021-06-05 08:06:29,310 INFO L226 Difference]: Without dead ends: 6036 [2021-06-05 08:06:29,310 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1194 ImplicationChecksByTransitivity, 925.4ms TimeCoverageRelationStatistics Valid=1277, Invalid=4125, Unknown=0, NotChecked=0, Total=5402 [2021-06-05 08:06:29,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6036 states. [2021-06-05 08:06:29,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6036 to 4413. [2021-06-05 08:06:29,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4413 states, 4412 states have (on average 2.777198549410698) internal successors, (12253), 4412 states have internal predecessors, (12253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:29,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4413 states to 4413 states and 12253 transitions. [2021-06-05 08:06:29,370 INFO L78 Accepts]: Start accepts. Automaton has 4413 states and 12253 transitions. Word has length 170 [2021-06-05 08:06:29,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:06:29,370 INFO L482 AbstractCegarLoop]: Abstraction has 4413 states and 12253 transitions. [2021-06-05 08:06:29,371 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:29,371 INFO L276 IsEmpty]: Start isEmpty. Operand 4413 states and 12253 transitions. [2021-06-05 08:06:29,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-06-05 08:06:29,374 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:06:29,374 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:06:29,588 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 388 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable392 [2021-06-05 08:06:29,588 INFO L430 AbstractCegarLoop]: === Iteration 394 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:06:29,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:06:29,594 INFO L82 PathProgramCache]: Analyzing trace with hash 271643259, now seen corresponding path program 385 times [2021-06-05 08:06:29,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:06:29,594 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41956302] [2021-06-05 08:06:29,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:06:29,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:29,920 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:29,920 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:06:29,920 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41956302] [2021-06-05 08:06:29,920 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41956302] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:29,920 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981460306] [2021-06-05 08:06:29,920 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 389 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 389 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:30,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:30,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 08:06:30,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:06:30,413 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:30,414 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981460306] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:30,414 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:06:30,414 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2021-06-05 08:06:30,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777388659] [2021-06-05 08:06:30,414 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-06-05 08:06:30,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:06:30,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-06-05 08:06:30,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=961, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 08:06:30,414 INFO L87 Difference]: Start difference. First operand 4413 states and 12253 transitions. Second operand has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:31,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:06:31,557 INFO L93 Difference]: Finished difference Result 6331 states and 16292 transitions. [2021-06-05 08:06:31,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 08:06:31,557 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-06-05 08:06:31,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:06:31,562 INFO L225 Difference]: With dead ends: 6331 [2021-06-05 08:06:31,562 INFO L226 Difference]: Without dead ends: 6061 [2021-06-05 08:06:31,563 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1331 ImplicationChecksByTransitivity, 1168.2ms TimeCoverageRelationStatistics Valid=1400, Invalid=4606, Unknown=0, NotChecked=0, Total=6006 [2021-06-05 08:06:31,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6061 states. [2021-06-05 08:06:31,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6061 to 4488. [2021-06-05 08:06:31,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4488 states, 4487 states have (on average 2.7809226654780477) internal successors, (12478), 4487 states have internal predecessors, (12478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:31,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4488 states to 4488 states and 12478 transitions. [2021-06-05 08:06:31,621 INFO L78 Accepts]: Start accepts. Automaton has 4488 states and 12478 transitions. Word has length 170 [2021-06-05 08:06:31,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:06:31,621 INFO L482 AbstractCegarLoop]: Abstraction has 4488 states and 12478 transitions. [2021-06-05 08:06:31,621 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:31,621 INFO L276 IsEmpty]: Start isEmpty. Operand 4488 states and 12478 transitions. [2021-06-05 08:06:31,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-06-05 08:06:31,625 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:06:31,625 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:06:31,826 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable393,389 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:31,826 INFO L430 AbstractCegarLoop]: === Iteration 395 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:06:31,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:06:31,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1343310231, now seen corresponding path program 386 times [2021-06-05 08:06:31,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:06:31,826 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930907056] [2021-06-05 08:06:31,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:06:31,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:32,157 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:32,157 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:06:32,157 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930907056] [2021-06-05 08:06:32,157 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930907056] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:32,157 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025642801] [2021-06-05 08:06:32,157 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 390 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 390 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:32,231 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:06:32,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:06:32,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 08:06:32,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:06:32,416 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:32,416 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025642801] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:32,416 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:06:32,416 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2021-06-05 08:06:32,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895806643] [2021-06-05 08:06:32,416 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-05 08:06:32,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:06:32,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-05 08:06:32,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=894, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 08:06:32,417 INFO L87 Difference]: Start difference. First operand 4488 states and 12478 transitions. Second operand has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:33,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:06:33,342 INFO L93 Difference]: Finished difference Result 6356 states and 16417 transitions. [2021-06-05 08:06:33,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 08:06:33,342 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-06-05 08:06:33,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:06:33,349 INFO L225 Difference]: With dead ends: 6356 [2021-06-05 08:06:33,349 INFO L226 Difference]: Without dead ends: 6086 [2021-06-05 08:06:33,350 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1302 ImplicationChecksByTransitivity, 969.1ms TimeCoverageRelationStatistics Valid=1354, Invalid=4346, Unknown=0, NotChecked=0, Total=5700 [2021-06-05 08:06:33,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6086 states. [2021-06-05 08:06:33,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6086 to 4563. [2021-06-05 08:06:33,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4563 states, 4562 states have (on average 2.7845243314335817) internal successors, (12703), 4562 states have internal predecessors, (12703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:33,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4563 states to 4563 states and 12703 transitions. [2021-06-05 08:06:33,414 INFO L78 Accepts]: Start accepts. Automaton has 4563 states and 12703 transitions. Word has length 170 [2021-06-05 08:06:33,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:06:33,414 INFO L482 AbstractCegarLoop]: Abstraction has 4563 states and 12703 transitions. [2021-06-05 08:06:33,414 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:33,414 INFO L276 IsEmpty]: Start isEmpty. Operand 4563 states and 12703 transitions. [2021-06-05 08:06:33,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-06-05 08:06:33,418 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:06:33,418 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:06:33,631 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 390 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable394 [2021-06-05 08:06:33,631 INFO L430 AbstractCegarLoop]: === Iteration 396 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:06:33,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:06:33,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1723754183, now seen corresponding path program 387 times [2021-06-05 08:06:33,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:06:33,632 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010094441] [2021-06-05 08:06:33,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:06:33,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:33,949 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:33,949 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:06:33,949 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010094441] [2021-06-05 08:06:33,949 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010094441] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:33,949 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874647251] [2021-06-05 08:06:33,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 391 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 391 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:34,039 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-06-05 08:06:34,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:06:34,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 49 conjunts are in the unsatisfiable core [2021-06-05 08:06:34,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:06:34,238 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:34,238 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874647251] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:34,238 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:06:34,239 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2021-06-05 08:06:34,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360765768] [2021-06-05 08:06:34,239 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-06-05 08:06:34,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:06:34,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-06-05 08:06:34,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=964, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 08:06:34,239 INFO L87 Difference]: Start difference. First operand 4563 states and 12703 transitions. Second operand has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:35,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:06:35,382 INFO L93 Difference]: Finished difference Result 6381 states and 16542 transitions. [2021-06-05 08:06:35,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 08:06:35,383 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-06-05 08:06:35,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:06:35,388 INFO L225 Difference]: With dead ends: 6381 [2021-06-05 08:06:35,389 INFO L226 Difference]: Without dead ends: 6111 [2021-06-05 08:06:35,389 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1326 ImplicationChecksByTransitivity, 1164.1ms TimeCoverageRelationStatistics Valid=1333, Invalid=4673, Unknown=0, NotChecked=0, Total=6006 [2021-06-05 08:06:35,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6111 states. [2021-06-05 08:06:35,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6111 to 4638. [2021-06-05 08:06:35,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4638 states, 4637 states have (on average 2.7880094888936813) internal successors, (12928), 4637 states have internal predecessors, (12928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:35,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4638 states to 4638 states and 12928 transitions. [2021-06-05 08:06:35,449 INFO L78 Accepts]: Start accepts. Automaton has 4638 states and 12928 transitions. Word has length 170 [2021-06-05 08:06:35,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:06:35,449 INFO L482 AbstractCegarLoop]: Abstraction has 4638 states and 12928 transitions. [2021-06-05 08:06:35,449 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:35,449 INFO L276 IsEmpty]: Start isEmpty. Operand 4638 states and 12928 transitions. [2021-06-05 08:06:35,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-06-05 08:06:35,453 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:06:35,453 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:06:35,670 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable395,391 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:35,670 INFO L430 AbstractCegarLoop]: === Iteration 397 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:06:35,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:06:35,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1099379033, now seen corresponding path program 388 times [2021-06-05 08:06:35,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:06:35,670 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305904895] [2021-06-05 08:06:35,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:06:35,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:35,980 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:35,980 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:06:35,980 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305904895] [2021-06-05 08:06:35,980 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305904895] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:35,980 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648035845] [2021-06-05 08:06:35,980 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 392 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 392 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:36,054 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:06:36,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:06:36,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 08:06:36,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:06:36,239 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:36,240 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648035845] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:36,240 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:06:36,240 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2021-06-05 08:06:36,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003488763] [2021-06-05 08:06:36,240 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-05 08:06:36,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:06:36,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-05 08:06:36,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=894, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 08:06:36,240 INFO L87 Difference]: Start difference. First operand 4638 states and 12928 transitions. Second operand has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:37,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:06:37,338 INFO L93 Difference]: Finished difference Result 6406 states and 16667 transitions. [2021-06-05 08:06:37,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 08:06:37,338 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-06-05 08:06:37,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:06:37,345 INFO L225 Difference]: With dead ends: 6406 [2021-06-05 08:06:37,345 INFO L226 Difference]: Without dead ends: 6136 [2021-06-05 08:06:37,345 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1414 ImplicationChecksByTransitivity, 1074.2ms TimeCoverageRelationStatistics Valid=1447, Invalid=4559, Unknown=0, NotChecked=0, Total=6006 [2021-06-05 08:06:37,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6136 states. [2021-06-05 08:06:37,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6136 to 4713. [2021-06-05 08:06:37,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4713 states, 4712 states have (on average 2.791383701188455) internal successors, (13153), 4712 states have internal predecessors, (13153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:37,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4713 states to 4713 states and 13153 transitions. [2021-06-05 08:06:37,419 INFO L78 Accepts]: Start accepts. Automaton has 4713 states and 13153 transitions. Word has length 170 [2021-06-05 08:06:37,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:06:37,419 INFO L482 AbstractCegarLoop]: Abstraction has 4713 states and 13153 transitions. [2021-06-05 08:06:37,419 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:37,419 INFO L276 IsEmpty]: Start isEmpty. Operand 4713 states and 13153 transitions. [2021-06-05 08:06:37,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-06-05 08:06:37,424 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:06:37,424 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:06:37,640 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable396,392 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:37,640 INFO L430 AbstractCegarLoop]: === Iteration 398 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:06:37,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:06:37,640 INFO L82 PathProgramCache]: Analyzing trace with hash -290327177, now seen corresponding path program 389 times [2021-06-05 08:06:37,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:06:37,640 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115874314] [2021-06-05 08:06:37,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:06:37,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:38,001 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:38,001 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:06:38,001 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115874314] [2021-06-05 08:06:38,001 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115874314] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:38,001 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51448628] [2021-06-05 08:06:38,001 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 393 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 393 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:38,083 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2021-06-05 08:06:38,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:06:38,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 08:06:38,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:06:38,284 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:38,284 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51448628] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:38,284 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:06:38,284 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2021-06-05 08:06:38,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404201886] [2021-06-05 08:06:38,285 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-06-05 08:06:38,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:06:38,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-06-05 08:06:38,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=963, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 08:06:38,285 INFO L87 Difference]: Start difference. First operand 4713 states and 13153 transitions. Second operand has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:39,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:06:39,629 INFO L93 Difference]: Finished difference Result 6431 states and 16792 transitions. [2021-06-05 08:06:39,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-05 08:06:39,629 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-06-05 08:06:39,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:06:39,635 INFO L225 Difference]: With dead ends: 6431 [2021-06-05 08:06:39,635 INFO L226 Difference]: Without dead ends: 6161 [2021-06-05 08:06:39,636 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1565 ImplicationChecksByTransitivity, 1367.7ms TimeCoverageRelationStatistics Valid=1586, Invalid=5056, Unknown=0, NotChecked=0, Total=6642 [2021-06-05 08:06:39,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6161 states. [2021-06-05 08:06:39,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6161 to 4788. [2021-06-05 08:06:39,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4788 states, 4787 states have (on average 2.794652182995613) internal successors, (13378), 4787 states have internal predecessors, (13378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:39,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4788 states to 4788 states and 13378 transitions. [2021-06-05 08:06:39,699 INFO L78 Accepts]: Start accepts. Automaton has 4788 states and 13378 transitions. Word has length 170 [2021-06-05 08:06:39,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:06:39,699 INFO L482 AbstractCegarLoop]: Abstraction has 4788 states and 13378 transitions. [2021-06-05 08:06:39,699 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:39,699 INFO L276 IsEmpty]: Start isEmpty. Operand 4788 states and 13378 transitions. [2021-06-05 08:06:39,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-06-05 08:06:39,703 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:06:39,703 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:06:39,920 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable397,393 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:39,920 INFO L430 AbstractCegarLoop]: === Iteration 399 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:06:39,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:06:39,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1682277275, now seen corresponding path program 390 times [2021-06-05 08:06:39,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:06:39,920 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758902450] [2021-06-05 08:06:39,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:06:39,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:40,266 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:40,267 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:06:40,267 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758902450] [2021-06-05 08:06:40,267 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758902450] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:40,267 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474379890] [2021-06-05 08:06:40,267 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 394 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 394 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:40,357 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2021-06-05 08:06:40,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:06:40,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 08:06:40,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:06:40,550 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:40,550 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474379890] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:40,550 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:06:40,550 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2021-06-05 08:06:40,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120064729] [2021-06-05 08:06:40,550 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-05 08:06:40,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:06:40,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-05 08:06:40,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=890, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 08:06:40,551 INFO L87 Difference]: Start difference. First operand 4788 states and 13378 transitions. Second operand has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:41,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:06:41,703 INFO L93 Difference]: Finished difference Result 6456 states and 16917 transitions. [2021-06-05 08:06:41,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 08:06:41,704 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-06-05 08:06:41,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:06:41,711 INFO L225 Difference]: With dead ends: 6456 [2021-06-05 08:06:41,711 INFO L226 Difference]: Without dead ends: 6186 [2021-06-05 08:06:41,712 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1530 ImplicationChecksByTransitivity, 1149.8ms TimeCoverageRelationStatistics Valid=1556, Invalid=4764, Unknown=0, NotChecked=0, Total=6320 [2021-06-05 08:06:41,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6186 states. [2021-06-05 08:06:41,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6186 to 4863. [2021-06-05 08:06:41,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4863 states, 4862 states have (on average 2.7978198272315917) internal successors, (13603), 4862 states have internal predecessors, (13603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:41,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4863 states to 4863 states and 13603 transitions. [2021-06-05 08:06:41,775 INFO L78 Accepts]: Start accepts. Automaton has 4863 states and 13603 transitions. Word has length 170 [2021-06-05 08:06:41,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:06:41,776 INFO L482 AbstractCegarLoop]: Abstraction has 4863 states and 13603 transitions. [2021-06-05 08:06:41,776 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:41,776 INFO L276 IsEmpty]: Start isEmpty. Operand 4863 states and 13603 transitions. [2021-06-05 08:06:41,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-06-05 08:06:41,780 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:06:41,802 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:06:42,013 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 394 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable398 [2021-06-05 08:06:42,013 INFO L430 AbstractCegarLoop]: === Iteration 400 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:06:42,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:06:42,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1927354571, now seen corresponding path program 391 times [2021-06-05 08:06:42,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:06:42,014 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308439969] [2021-06-05 08:06:42,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:06:42,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:42,337 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:42,337 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:06:42,337 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308439969] [2021-06-05 08:06:42,337 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308439969] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:42,337 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980069788] [2021-06-05 08:06:42,338 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 395 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 395 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:42,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:42,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 08:06:42,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:06:42,622 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:42,622 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980069788] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:42,622 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:06:42,622 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2021-06-05 08:06:42,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896164749] [2021-06-05 08:06:42,622 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-06-05 08:06:42,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:06:42,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-06-05 08:06:42,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=958, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 08:06:42,623 INFO L87 Difference]: Start difference. First operand 4863 states and 13603 transitions. Second operand has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:43,120 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 11 [2021-06-05 08:06:44,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:06:44,050 INFO L93 Difference]: Finished difference Result 6481 states and 17042 transitions. [2021-06-05 08:06:44,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-05 08:06:44,050 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-06-05 08:06:44,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:06:44,057 INFO L225 Difference]: With dead ends: 6481 [2021-06-05 08:06:44,057 INFO L226 Difference]: Without dead ends: 6211 [2021-06-05 08:06:44,057 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1688 ImplicationChecksByTransitivity, 1461.0ms TimeCoverageRelationStatistics Valid=1703, Invalid=5269, Unknown=0, NotChecked=0, Total=6972 [2021-06-05 08:06:44,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6211 states. [2021-06-05 08:06:44,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6211 to 4938. [2021-06-05 08:06:44,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4938 states, 4937 states have (on average 2.800891229491594) internal successors, (13828), 4937 states have internal predecessors, (13828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:44,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4938 states to 4938 states and 13828 transitions. [2021-06-05 08:06:44,121 INFO L78 Accepts]: Start accepts. Automaton has 4938 states and 13828 transitions. Word has length 170 [2021-06-05 08:06:44,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:06:44,122 INFO L482 AbstractCegarLoop]: Abstraction has 4938 states and 13828 transitions. [2021-06-05 08:06:44,122 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:44,122 INFO L276 IsEmpty]: Start isEmpty. Operand 4938 states and 13828 transitions. [2021-06-05 08:06:44,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-06-05 08:06:44,126 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:06:44,126 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:06:44,337 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable399,395 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:44,337 INFO L430 AbstractCegarLoop]: === Iteration 401 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:06:44,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:06:44,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1990762403, now seen corresponding path program 392 times [2021-06-05 08:06:44,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:06:44,337 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399708194] [2021-06-05 08:06:44,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:06:44,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:44,636 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:44,636 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:06:44,636 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399708194] [2021-06-05 08:06:44,636 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399708194] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:44,636 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880046241] [2021-06-05 08:06:44,636 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 396 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 396 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:44,716 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:06:44,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:06:44,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 08:06:44,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:06:44,927 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:44,927 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880046241] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:44,927 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:06:44,927 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2021-06-05 08:06:44,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509702992] [2021-06-05 08:06:44,927 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-05 08:06:44,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:06:44,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-05 08:06:44,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=882, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 08:06:44,928 INFO L87 Difference]: Start difference. First operand 4938 states and 13828 transitions. Second operand has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:45,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:06:45,984 INFO L93 Difference]: Finished difference Result 6506 states and 17167 transitions. [2021-06-05 08:06:45,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 08:06:45,985 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-06-05 08:06:45,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:06:45,992 INFO L225 Difference]: With dead ends: 6506 [2021-06-05 08:06:45,992 INFO L226 Difference]: Without dead ends: 6236 [2021-06-05 08:06:45,993 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1650 ImplicationChecksByTransitivity, 1046.7ms TimeCoverageRelationStatistics Valid=1681, Invalid=4961, Unknown=0, NotChecked=0, Total=6642 [2021-06-05 08:06:45,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6236 states. [2021-06-05 08:06:46,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6236 to 5013. [2021-06-05 08:06:46,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5013 states, 5012 states have (on average 2.8038707102952913) internal successors, (14053), 5012 states have internal predecessors, (14053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:46,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5013 states to 5013 states and 14053 transitions. [2021-06-05 08:06:46,064 INFO L78 Accepts]: Start accepts. Automaton has 5013 states and 14053 transitions. Word has length 170 [2021-06-05 08:06:46,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:06:46,065 INFO L482 AbstractCegarLoop]: Abstraction has 5013 states and 14053 transitions. [2021-06-05 08:06:46,065 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:46,065 INFO L276 IsEmpty]: Start isEmpty. Operand 5013 states and 14053 transitions. [2021-06-05 08:06:46,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-06-05 08:06:46,069 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:06:46,069 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:06:46,286 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 396 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable400 [2021-06-05 08:06:46,287 INFO L430 AbstractCegarLoop]: === Iteration 402 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:06:46,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:06:46,287 INFO L82 PathProgramCache]: Analyzing trace with hash -977449357, now seen corresponding path program 393 times [2021-06-05 08:06:46,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:06:46,287 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692695771] [2021-06-05 08:06:46,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:06:46,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:46,615 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:46,615 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:06:46,615 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692695771] [2021-06-05 08:06:46,615 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692695771] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:46,615 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364760250] [2021-06-05 08:06:46,615 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 397 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 397 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:46,719 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-06-05 08:06:46,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:06:46,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 43 conjunts are in the unsatisfiable core [2021-06-05 08:06:46,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:06:46,981 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:46,981 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364760250] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:46,981 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:06:46,981 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2021-06-05 08:06:46,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629320845] [2021-06-05 08:06:46,982 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-06-05 08:06:46,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:06:46,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-06-05 08:06:46,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=949, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 08:06:46,982 INFO L87 Difference]: Start difference. First operand 5013 states and 14053 transitions. Second operand has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:48,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:06:48,424 INFO L93 Difference]: Finished difference Result 6531 states and 17292 transitions. [2021-06-05 08:06:48,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-05 08:06:48,424 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-06-05 08:06:48,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:06:48,432 INFO L225 Difference]: With dead ends: 6531 [2021-06-05 08:06:48,432 INFO L226 Difference]: Without dead ends: 6261 [2021-06-05 08:06:48,433 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1665 ImplicationChecksByTransitivity, 1335.7ms TimeCoverageRelationStatistics Valid=1603, Invalid=5369, Unknown=0, NotChecked=0, Total=6972 [2021-06-05 08:06:48,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6261 states. [2021-06-05 08:06:48,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6261 to 5088. [2021-06-05 08:06:48,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5088 states, 5087 states have (on average 2.806762335364655) internal successors, (14278), 5087 states have internal predecessors, (14278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:48,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5088 states to 5088 states and 14278 transitions. [2021-06-05 08:06:48,505 INFO L78 Accepts]: Start accepts. Automaton has 5088 states and 14278 transitions. Word has length 170 [2021-06-05 08:06:48,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:06:48,506 INFO L482 AbstractCegarLoop]: Abstraction has 5088 states and 14278 transitions. [2021-06-05 08:06:48,506 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:48,506 INFO L276 IsEmpty]: Start isEmpty. Operand 5088 states and 14278 transitions. [2021-06-05 08:06:48,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-06-05 08:06:48,511 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:06:48,511 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:06:48,721 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 397 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable401 [2021-06-05 08:06:48,721 INFO L430 AbstractCegarLoop]: === Iteration 403 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:06:48,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:06:48,721 INFO L82 PathProgramCache]: Analyzing trace with hash -523233183, now seen corresponding path program 394 times [2021-06-05 08:06:48,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:06:48,721 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899683887] [2021-06-05 08:06:48,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:06:48,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:49,055 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:49,055 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:06:49,055 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899683887] [2021-06-05 08:06:49,055 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899683887] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:49,055 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523236972] [2021-06-05 08:06:49,056 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 398 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 398 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:49,131 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:06:49,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:06:49,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 08:06:49,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:06:49,329 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:49,329 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523236972] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:49,329 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:06:49,329 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2021-06-05 08:06:49,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792361989] [2021-06-05 08:06:49,329 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-05 08:06:49,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:06:49,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-05 08:06:49,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=870, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 08:06:49,330 INFO L87 Difference]: Start difference. First operand 5088 states and 14278 transitions. Second operand has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:50,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:06:50,519 INFO L93 Difference]: Finished difference Result 6556 states and 17417 transitions. [2021-06-05 08:06:50,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-05 08:06:50,519 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-06-05 08:06:50,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:06:50,527 INFO L225 Difference]: With dead ends: 6556 [2021-06-05 08:06:50,527 INFO L226 Difference]: Without dead ends: 6286 [2021-06-05 08:06:50,528 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1774 ImplicationChecksByTransitivity, 1208.2ms TimeCoverageRelationStatistics Valid=1822, Invalid=5150, Unknown=0, NotChecked=0, Total=6972 [2021-06-05 08:06:50,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6286 states. [2021-06-05 08:06:50,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6286 to 5163. [2021-06-05 08:06:50,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5163 states, 5162 states have (on average 2.8095699341340565) internal successors, (14503), 5162 states have internal predecessors, (14503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:50,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5163 states to 5163 states and 14503 transitions. [2021-06-05 08:06:50,601 INFO L78 Accepts]: Start accepts. Automaton has 5163 states and 14503 transitions. Word has length 170 [2021-06-05 08:06:50,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:06:50,601 INFO L482 AbstractCegarLoop]: Abstraction has 5163 states and 14503 transitions. [2021-06-05 08:06:50,601 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:50,601 INFO L276 IsEmpty]: Start isEmpty. Operand 5163 states and 14503 transitions. [2021-06-05 08:06:50,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-06-05 08:06:50,606 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:06:50,606 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:06:50,822 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable402,398 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:50,823 INFO L430 AbstractCegarLoop]: === Iteration 404 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:06:50,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:06:50,823 INFO L82 PathProgramCache]: Analyzing trace with hash 475663153, now seen corresponding path program 395 times [2021-06-05 08:06:50,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:06:50,823 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62089129] [2021-06-05 08:06:50,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:06:50,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:51,180 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:51,180 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:06:51,180 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62089129] [2021-06-05 08:06:51,180 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62089129] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:51,180 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060428547] [2021-06-05 08:06:51,180 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 399 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 399 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:51,271 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2021-06-05 08:06:51,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:06:51,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 08:06:51,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:06:51,472 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:51,472 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060428547] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:51,472 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:06:51,472 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2021-06-05 08:06:51,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336309536] [2021-06-05 08:06:51,472 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-06-05 08:06:51,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:06:51,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-06-05 08:06:51,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=936, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 08:06:51,473 INFO L87 Difference]: Start difference. First operand 5163 states and 14503 transitions. Second operand has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:52,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:06:52,902 INFO L93 Difference]: Finished difference Result 6581 states and 17542 transitions. [2021-06-05 08:06:52,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-05 08:06:52,902 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-06-05 08:06:52,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:06:52,910 INFO L225 Difference]: With dead ends: 6581 [2021-06-05 08:06:52,910 INFO L226 Difference]: Without dead ends: 6311 [2021-06-05 08:06:52,911 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1946 ImplicationChecksByTransitivity, 1408.0ms TimeCoverageRelationStatistics Valid=1985, Invalid=5671, Unknown=0, NotChecked=0, Total=7656 [2021-06-05 08:06:52,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6311 states. [2021-06-05 08:06:52,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6311 to 5238. [2021-06-05 08:06:52,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5238 states, 5237 states have (on average 2.812297116669849) internal successors, (14728), 5237 states have internal predecessors, (14728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:52,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5238 states to 5238 states and 14728 transitions. [2021-06-05 08:06:52,991 INFO L78 Accepts]: Start accepts. Automaton has 5238 states and 14728 transitions. Word has length 170 [2021-06-05 08:06:52,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:06:52,991 INFO L482 AbstractCegarLoop]: Abstraction has 5238 states and 14728 transitions. [2021-06-05 08:06:52,991 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:52,991 INFO L276 IsEmpty]: Start isEmpty. Operand 5238 states and 14728 transitions. [2021-06-05 08:06:52,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-06-05 08:06:52,996 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:06:52,996 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:06:53,209 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 399 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable403 [2021-06-05 08:06:53,209 INFO L430 AbstractCegarLoop]: === Iteration 405 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:06:53,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:06:53,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1403664737, now seen corresponding path program 396 times [2021-06-05 08:06:53,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:06:53,209 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967798430] [2021-06-05 08:06:53,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:06:53,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:53,501 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:53,502 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:06:53,502 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967798430] [2021-06-05 08:06:53,502 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967798430] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:53,502 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959360892] [2021-06-05 08:06:53,502 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 400 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 400 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:53,588 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2021-06-05 08:06:53,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:06:53,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 39 conjunts are in the unsatisfiable core [2021-06-05 08:06:53,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:06:53,768 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:53,768 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959360892] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:53,768 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:06:53,768 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2021-06-05 08:06:53,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311986911] [2021-06-05 08:06:53,768 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-05 08:06:53,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:06:53,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-05 08:06:53,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=854, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 08:06:53,769 INFO L87 Difference]: Start difference. First operand 5238 states and 14728 transitions. Second operand has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:54,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:06:54,961 INFO L93 Difference]: Finished difference Result 6606 states and 17667 transitions. [2021-06-05 08:06:54,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-05 08:06:54,962 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-06-05 08:06:54,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:06:54,968 INFO L225 Difference]: With dead ends: 6606 [2021-06-05 08:06:54,968 INFO L226 Difference]: Without dead ends: 6336 [2021-06-05 08:06:54,969 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1902 ImplicationChecksByTransitivity, 1100.0ms TimeCoverageRelationStatistics Valid=1979, Invalid=5331, Unknown=0, NotChecked=0, Total=7310 [2021-06-05 08:06:54,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6336 states. [2021-06-05 08:06:55,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6336 to 5313. [2021-06-05 08:06:55,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5313 states, 5312 states have (on average 2.8149472891566263) internal successors, (14953), 5312 states have internal predecessors, (14953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:55,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5313 states to 5313 states and 14953 transitions. [2021-06-05 08:06:55,038 INFO L78 Accepts]: Start accepts. Automaton has 5313 states and 14953 transitions. Word has length 170 [2021-06-05 08:06:55,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:06:55,039 INFO L482 AbstractCegarLoop]: Abstraction has 5313 states and 14953 transitions. [2021-06-05 08:06:55,039 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:55,039 INFO L276 IsEmpty]: Start isEmpty. Operand 5313 states and 14953 transitions. [2021-06-05 08:06:55,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-06-05 08:06:55,044 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:06:55,044 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:06:55,261 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 400 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable404 [2021-06-05 08:06:55,261 INFO L430 AbstractCegarLoop]: === Iteration 406 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:06:55,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:06:55,261 INFO L82 PathProgramCache]: Analyzing trace with hash 626654575, now seen corresponding path program 397 times [2021-06-05 08:06:55,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:06:55,261 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297597345] [2021-06-05 08:06:55,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:06:55,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:55,557 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:55,557 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:06:55,557 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297597345] [2021-06-05 08:06:55,558 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297597345] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:55,558 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074991687] [2021-06-05 08:06:55,558 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 401 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 401 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:55,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:55,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 08:06:55,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:06:55,826 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:55,826 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074991687] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:55,826 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:06:55,826 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2021-06-05 08:06:55,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156103263] [2021-06-05 08:06:55,826 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-06-05 08:06:55,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:06:55,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-06-05 08:06:55,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=919, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 08:06:55,827 INFO L87 Difference]: Start difference. First operand 5313 states and 14953 transitions. Second operand has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:57,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:06:57,317 INFO L93 Difference]: Finished difference Result 6631 states and 17792 transitions. [2021-06-05 08:06:57,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-06-05 08:06:57,318 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-06-05 08:06:57,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:06:57,325 INFO L225 Difference]: With dead ends: 6631 [2021-06-05 08:06:57,325 INFO L226 Difference]: Without dead ends: 6361 [2021-06-05 08:06:57,326 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2081 ImplicationChecksByTransitivity, 1415.0ms TimeCoverageRelationStatistics Valid=2150, Invalid=5860, Unknown=0, NotChecked=0, Total=8010 [2021-06-05 08:06:57,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6361 states. [2021-06-05 08:06:57,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6361 to 5388. [2021-06-05 08:06:57,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5388 states, 5387 states have (on average 2.817523668089846) internal successors, (15178), 5387 states have internal predecessors, (15178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:57,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5388 states to 5388 states and 15178 transitions. [2021-06-05 08:06:57,399 INFO L78 Accepts]: Start accepts. Automaton has 5388 states and 15178 transitions. Word has length 170 [2021-06-05 08:06:57,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:06:57,399 INFO L482 AbstractCegarLoop]: Abstraction has 5388 states and 15178 transitions. [2021-06-05 08:06:57,400 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:57,400 INFO L276 IsEmpty]: Start isEmpty. Operand 5388 states and 15178 transitions. [2021-06-05 08:06:57,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-06-05 08:06:57,404 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:06:57,404 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:06:57,604 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable405,401 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:57,604 INFO L430 AbstractCegarLoop]: === Iteration 407 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:06:57,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:06:57,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1240894045, now seen corresponding path program 398 times [2021-06-05 08:06:57,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:06:57,605 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43593908] [2021-06-05 08:06:57,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:06:57,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:57,904 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:57,904 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:06:57,904 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43593908] [2021-06-05 08:06:57,904 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43593908] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:57,904 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498795791] [2021-06-05 08:06:57,904 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 402 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 402 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:57,971 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:06:57,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:06:57,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 08:06:57,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:06:58,157 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:58,157 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498795791] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:58,157 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:06:58,157 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2021-06-05 08:06:58,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809733468] [2021-06-05 08:06:58,157 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-05 08:06:58,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:06:58,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-05 08:06:58,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=834, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 08:06:58,158 INFO L87 Difference]: Start difference. First operand 5388 states and 15178 transitions. Second operand has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:59,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:06:59,321 INFO L93 Difference]: Finished difference Result 6656 states and 17917 transitions. [2021-06-05 08:06:59,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-06-05 08:06:59,322 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-06-05 08:06:59,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:06:59,329 INFO L225 Difference]: With dead ends: 6656 [2021-06-05 08:06:59,329 INFO L226 Difference]: Without dead ends: 6386 [2021-06-05 08:06:59,330 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2034 ImplicationChecksByTransitivity, 1123.6ms TimeCoverageRelationStatistics Valid=2152, Invalid=5504, Unknown=0, NotChecked=0, Total=7656 [2021-06-05 08:06:59,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6386 states. [2021-06-05 08:06:59,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6386 to 5463. [2021-06-05 08:06:59,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5463 states, 5462 states have (on average 2.8200292932991577) internal successors, (15403), 5462 states have internal predecessors, (15403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:59,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5463 states to 5463 states and 15403 transitions. [2021-06-05 08:06:59,401 INFO L78 Accepts]: Start accepts. Automaton has 5463 states and 15403 transitions. Word has length 170 [2021-06-05 08:06:59,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:06:59,401 INFO L482 AbstractCegarLoop]: Abstraction has 5463 states and 15403 transitions. [2021-06-05 08:06:59,401 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:06:59,401 INFO L276 IsEmpty]: Start isEmpty. Operand 5463 states and 15403 transitions. [2021-06-05 08:06:59,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-06-05 08:06:59,406 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:06:59,406 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:06:59,606 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable406,402 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:06:59,606 INFO L430 AbstractCegarLoop]: === Iteration 408 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:06:59,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:06:59,606 INFO L82 PathProgramCache]: Analyzing trace with hash -474348243, now seen corresponding path program 399 times [2021-06-05 08:06:59,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:06:59,606 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40270141] [2021-06-05 08:06:59,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:06:59,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:06:59,952 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:06:59,952 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:06:59,953 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40270141] [2021-06-05 08:06:59,953 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40270141] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:06:59,953 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328900243] [2021-06-05 08:06:59,953 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 403 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 403 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:00,032 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-06-05 08:07:00,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:07:00,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 08:07:00,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:07:00,236 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:00,236 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328900243] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:00,236 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:07:00,236 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2021-06-05 08:07:00,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31658563] [2021-06-05 08:07:00,236 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-06-05 08:07:00,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:07:00,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-06-05 08:07:00,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=898, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 08:07:00,237 INFO L87 Difference]: Start difference. First operand 5463 states and 15403 transitions. Second operand has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:01,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:07:01,566 INFO L93 Difference]: Finished difference Result 6741 states and 18207 transitions. [2021-06-05 08:07:01,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-06-05 08:07:01,567 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-06-05 08:07:01,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:07:01,574 INFO L225 Difference]: With dead ends: 6741 [2021-06-05 08:07:01,574 INFO L226 Difference]: Without dead ends: 6471 [2021-06-05 08:07:01,575 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2031 ImplicationChecksByTransitivity, 1332.0ms TimeCoverageRelationStatistics Valid=1990, Invalid=6020, Unknown=0, NotChecked=0, Total=8010 [2021-06-05 08:07:01,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6471 states. [2021-06-05 08:07:01,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6471 to 5538. [2021-06-05 08:07:01,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5538 states, 5537 states have (on average 2.826079104208055) internal successors, (15648), 5537 states have internal predecessors, (15648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:01,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5538 states to 5538 states and 15648 transitions. [2021-06-05 08:07:01,646 INFO L78 Accepts]: Start accepts. Automaton has 5538 states and 15648 transitions. Word has length 170 [2021-06-05 08:07:01,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:07:01,646 INFO L482 AbstractCegarLoop]: Abstraction has 5538 states and 15648 transitions. [2021-06-05 08:07:01,646 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:01,647 INFO L276 IsEmpty]: Start isEmpty. Operand 5538 states and 15648 transitions. [2021-06-05 08:07:01,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-06-05 08:07:01,651 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:07:01,651 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:07:01,851 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable407,403 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:01,851 INFO L430 AbstractCegarLoop]: === Iteration 409 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:07:01,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:07:01,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1506995845, now seen corresponding path program 400 times [2021-06-05 08:07:01,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:07:01,852 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945341069] [2021-06-05 08:07:01,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:07:01,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:02,174 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:02,174 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:07:02,174 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945341069] [2021-06-05 08:07:02,174 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945341069] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:02,174 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657343174] [2021-06-05 08:07:02,174 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 404 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 404 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:02,241 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:07:02,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:07:02,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 08:07:02,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:07:02,416 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:02,416 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657343174] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:02,416 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:07:02,416 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2021-06-05 08:07:02,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592055] [2021-06-05 08:07:02,416 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-05 08:07:02,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:07:02,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-05 08:07:02,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=810, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 08:07:02,417 INFO L87 Difference]: Start difference. First operand 5538 states and 15648 transitions. Second operand has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:03,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:07:03,628 INFO L93 Difference]: Finished difference Result 7508 states and 20381 transitions. [2021-06-05 08:07:03,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-05 08:07:03,629 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-06-05 08:07:03,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:07:03,637 INFO L225 Difference]: With dead ends: 7508 [2021-06-05 08:07:03,638 INFO L226 Difference]: Without dead ends: 7238 [2021-06-05 08:07:03,638 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2169 ImplicationChecksByTransitivity, 1217.9ms TimeCoverageRelationStatistics Valid=2342, Invalid=5668, Unknown=0, NotChecked=0, Total=8010 [2021-06-05 08:07:03,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7238 states. [2021-06-05 08:07:03,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7238 to 5718. [2021-06-05 08:07:03,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5718 states, 5717 states have (on average 2.8348784327444463) internal successors, (16207), 5717 states have internal predecessors, (16207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:03,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5718 states to 5718 states and 16207 transitions. [2021-06-05 08:07:03,710 INFO L78 Accepts]: Start accepts. Automaton has 5718 states and 16207 transitions. Word has length 170 [2021-06-05 08:07:03,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:07:03,710 INFO L482 AbstractCegarLoop]: Abstraction has 5718 states and 16207 transitions. [2021-06-05 08:07:03,710 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 5.151515151515151) internal successors, (170), 33 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:03,710 INFO L276 IsEmpty]: Start isEmpty. Operand 5718 states and 16207 transitions. [2021-06-05 08:07:03,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-06-05 08:07:03,715 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:07:03,715 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:07:03,915 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable408,404 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:03,915 INFO L430 AbstractCegarLoop]: === Iteration 410 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:07:03,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:07:03,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1484652595, now seen corresponding path program 401 times [2021-06-05 08:07:03,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:07:03,916 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091162008] [2021-06-05 08:07:03,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:07:03,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:04,210 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:04,210 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:07:04,210 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091162008] [2021-06-05 08:07:04,210 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091162008] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:04,211 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478983934] [2021-06-05 08:07:04,211 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 405 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 405 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:04,279 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2021-06-05 08:07:04,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:07:04,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 08:07:04,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:07:04,495 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:04,495 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478983934] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:04,495 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:07:04,495 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2021-06-05 08:07:04,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760119318] [2021-06-05 08:07:04,496 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-06-05 08:07:04,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:07:04,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-06-05 08:07:04,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=938, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 08:07:04,496 INFO L87 Difference]: Start difference. First operand 5718 states and 16207 transitions. Second operand has 35 states, 35 states have (on average 4.942857142857143) internal successors, (173), 35 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:06,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:07:06,175 INFO L93 Difference]: Finished difference Result 7451 states and 20241 transitions. [2021-06-05 08:07:06,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-06-05 08:07:06,175 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.942857142857143) internal successors, (173), 35 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-06-05 08:07:06,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:07:06,182 INFO L225 Difference]: With dead ends: 7451 [2021-06-05 08:07:06,182 INFO L226 Difference]: Without dead ends: 6876 [2021-06-05 08:07:06,183 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2604 ImplicationChecksByTransitivity, 1599.2ms TimeCoverageRelationStatistics Valid=2617, Invalid=6889, Unknown=0, NotChecked=0, Total=9506 [2021-06-05 08:07:06,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6876 states. [2021-06-05 08:07:06,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6876 to 5753. [2021-06-05 08:07:06,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5753 states, 5752 states have (on average 2.8308414464534075) internal successors, (16283), 5752 states have internal predecessors, (16283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:06,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5753 states to 5753 states and 16283 transitions. [2021-06-05 08:07:06,248 INFO L78 Accepts]: Start accepts. Automaton has 5753 states and 16283 transitions. Word has length 170 [2021-06-05 08:07:06,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:07:06,248 INFO L482 AbstractCegarLoop]: Abstraction has 5753 states and 16283 transitions. [2021-06-05 08:07:06,248 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 4.942857142857143) internal successors, (173), 35 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:06,248 INFO L276 IsEmpty]: Start isEmpty. Operand 5753 states and 16283 transitions. [2021-06-05 08:07:06,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-06-05 08:07:06,253 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:07:06,253 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:07:06,453 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable409,405 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:06,453 INFO L430 AbstractCegarLoop]: === Iteration 411 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:07:06,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:07:06,454 INFO L82 PathProgramCache]: Analyzing trace with hash -435860238, now seen corresponding path program 402 times [2021-06-05 08:07:06,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:07:06,454 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770018907] [2021-06-05 08:07:06,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:07:06,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:06,837 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:06,837 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:07:06,837 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770018907] [2021-06-05 08:07:06,837 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770018907] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:06,837 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950321337] [2021-06-05 08:07:06,837 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 406 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 406 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:06,923 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2021-06-05 08:07:06,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:07:06,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 08:07:06,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:07:07,152 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:07,153 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950321337] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:07,153 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:07:07,153 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-06-05 08:07:07,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942324455] [2021-06-05 08:07:07,153 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-06-05 08:07:07,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:07:07,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-06-05 08:07:07,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=925, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 08:07:07,153 INFO L87 Difference]: Start difference. First operand 5753 states and 16283 transitions. Second operand has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:08,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:07:08,280 INFO L93 Difference]: Finished difference Result 7496 states and 19897 transitions. [2021-06-05 08:07:08,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 08:07:08,280 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-06-05 08:07:08,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:07:08,288 INFO L225 Difference]: With dead ends: 7496 [2021-06-05 08:07:08,289 INFO L226 Difference]: Without dead ends: 7226 [2021-06-05 08:07:08,289 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 856 ImplicationChecksByTransitivity, 1210.3ms TimeCoverageRelationStatistics Valid=1270, Invalid=3422, Unknown=0, NotChecked=0, Total=4692 [2021-06-05 08:07:08,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7226 states. [2021-06-05 08:07:08,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7226 to 5753. [2021-06-05 08:07:08,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5753 states, 5752 states have (on average 2.8308414464534075) internal successors, (16283), 5752 states have internal predecessors, (16283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:08,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5753 states to 5753 states and 16283 transitions. [2021-06-05 08:07:08,358 INFO L78 Accepts]: Start accepts. Automaton has 5753 states and 16283 transitions. Word has length 175 [2021-06-05 08:07:08,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:07:08,359 INFO L482 AbstractCegarLoop]: Abstraction has 5753 states and 16283 transitions. [2021-06-05 08:07:08,359 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:08,359 INFO L276 IsEmpty]: Start isEmpty. Operand 5753 states and 16283 transitions. [2021-06-05 08:07:08,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-06-05 08:07:08,363 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:07:08,363 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:07:08,564 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 406 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable410 [2021-06-05 08:07:08,564 INFO L430 AbstractCegarLoop]: === Iteration 412 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:07:08,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:07:08,564 INFO L82 PathProgramCache]: Analyzing trace with hash 261855170, now seen corresponding path program 403 times [2021-06-05 08:07:08,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:07:08,564 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450486259] [2021-06-05 08:07:08,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:07:08,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:08,964 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:08,964 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:07:08,964 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450486259] [2021-06-05 08:07:08,964 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450486259] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:08,964 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051406496] [2021-06-05 08:07:08,964 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 407 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 407 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:09,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:09,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 08:07:09,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:07:09,275 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:09,275 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051406496] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:09,275 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:07:09,275 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 36 [2021-06-05 08:07:09,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139062036] [2021-06-05 08:07:09,275 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:07:09,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:07:09,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:07:09,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=1005, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:07:09,276 INFO L87 Difference]: Start difference. First operand 5753 states and 16283 transitions. Second operand has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:10,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:07:10,039 INFO L93 Difference]: Finished difference Result 8141 states and 21187 transitions. [2021-06-05 08:07:10,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 08:07:10,039 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-06-05 08:07:10,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:07:10,047 INFO L225 Difference]: With dead ends: 8141 [2021-06-05 08:07:10,047 INFO L226 Difference]: Without dead ends: 7871 [2021-06-05 08:07:10,048 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 978 ImplicationChecksByTransitivity, 940.3ms TimeCoverageRelationStatistics Valid=1340, Invalid=3772, Unknown=0, NotChecked=0, Total=5112 [2021-06-05 08:07:10,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7871 states. [2021-06-05 08:07:10,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7871 to 5753. [2021-06-05 08:07:10,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5753 states, 5752 states have (on average 2.8308414464534075) internal successors, (16283), 5752 states have internal predecessors, (16283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:10,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5753 states to 5753 states and 16283 transitions. [2021-06-05 08:07:10,117 INFO L78 Accepts]: Start accepts. Automaton has 5753 states and 16283 transitions. Word has length 175 [2021-06-05 08:07:10,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:07:10,117 INFO L482 AbstractCegarLoop]: Abstraction has 5753 states and 16283 transitions. [2021-06-05 08:07:10,117 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:10,117 INFO L276 IsEmpty]: Start isEmpty. Operand 5753 states and 16283 transitions. [2021-06-05 08:07:10,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-06-05 08:07:10,122 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:07:10,122 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:07:10,322 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 407 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable411 [2021-06-05 08:07:10,323 INFO L430 AbstractCegarLoop]: === Iteration 413 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:07:10,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:07:10,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1458027472, now seen corresponding path program 404 times [2021-06-05 08:07:10,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:07:10,323 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563524402] [2021-06-05 08:07:10,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:07:10,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:10,675 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:10,675 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:07:10,675 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563524402] [2021-06-05 08:07:10,675 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563524402] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:10,675 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810359364] [2021-06-05 08:07:10,675 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 408 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 408 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:10,741 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:07:10,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:07:10,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 08:07:10,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:07:10,963 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:10,963 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810359364] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:10,963 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:07:10,963 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-06-05 08:07:10,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143018520] [2021-06-05 08:07:10,964 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-06-05 08:07:10,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:07:10,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-06-05 08:07:10,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=949, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 08:07:10,964 INFO L87 Difference]: Start difference. First operand 5753 states and 16283 transitions. Second operand has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:11,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:07:11,690 INFO L93 Difference]: Finished difference Result 8096 states and 21097 transitions. [2021-06-05 08:07:11,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 08:07:11,690 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-06-05 08:07:11,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:07:11,698 INFO L225 Difference]: With dead ends: 8096 [2021-06-05 08:07:11,699 INFO L226 Difference]: Without dead ends: 7826 [2021-06-05 08:07:11,699 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1055 ImplicationChecksByTransitivity, 858.6ms TimeCoverageRelationStatistics Valid=1328, Invalid=3784, Unknown=0, NotChecked=0, Total=5112 [2021-06-05 08:07:11,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7826 states. [2021-06-05 08:07:11,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7826 to 5753. [2021-06-05 08:07:11,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5753 states, 5752 states have (on average 2.8308414464534075) internal successors, (16283), 5752 states have internal predecessors, (16283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:11,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5753 states to 5753 states and 16283 transitions. [2021-06-05 08:07:11,769 INFO L78 Accepts]: Start accepts. Automaton has 5753 states and 16283 transitions. Word has length 175 [2021-06-05 08:07:11,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:07:11,769 INFO L482 AbstractCegarLoop]: Abstraction has 5753 states and 16283 transitions. [2021-06-05 08:07:11,769 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:11,769 INFO L276 IsEmpty]: Start isEmpty. Operand 5753 states and 16283 transitions. [2021-06-05 08:07:11,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-06-05 08:07:11,774 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:07:11,774 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:07:11,974 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable412,408 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:11,974 INFO L430 AbstractCegarLoop]: === Iteration 414 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:07:11,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:07:11,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1959341312, now seen corresponding path program 405 times [2021-06-05 08:07:11,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:07:11,974 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994472205] [2021-06-05 08:07:11,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:07:11,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:12,368 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:12,368 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:07:12,368 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994472205] [2021-06-05 08:07:12,368 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994472205] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:12,368 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602951087] [2021-06-05 08:07:12,368 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 409 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 409 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:12,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-06-05 08:07:12,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:07:12,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 08:07:12,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:07:12,685 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:12,685 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602951087] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:12,685 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:07:12,686 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 36 [2021-06-05 08:07:12,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322027968] [2021-06-05 08:07:12,686 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:07:12,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:07:12,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:07:12,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=1028, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:07:12,686 INFO L87 Difference]: Start difference. First operand 5753 states and 16283 transitions. Second operand has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:13,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:07:13,491 INFO L93 Difference]: Finished difference Result 8046 states and 20997 transitions. [2021-06-05 08:07:13,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 08:07:13,492 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-06-05 08:07:13,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:07:13,500 INFO L225 Difference]: With dead ends: 8046 [2021-06-05 08:07:13,500 INFO L226 Difference]: Without dead ends: 7776 [2021-06-05 08:07:13,501 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1076 ImplicationChecksByTransitivity, 965.5ms TimeCoverageRelationStatistics Valid=1351, Invalid=4051, Unknown=0, NotChecked=0, Total=5402 [2021-06-05 08:07:13,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7776 states. [2021-06-05 08:07:13,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7776 to 5753. [2021-06-05 08:07:13,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5753 states, 5752 states have (on average 2.8308414464534075) internal successors, (16283), 5752 states have internal predecessors, (16283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:13,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5753 states to 5753 states and 16283 transitions. [2021-06-05 08:07:13,571 INFO L78 Accepts]: Start accepts. Automaton has 5753 states and 16283 transitions. Word has length 175 [2021-06-05 08:07:13,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:07:13,572 INFO L482 AbstractCegarLoop]: Abstraction has 5753 states and 16283 transitions. [2021-06-05 08:07:13,572 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:13,572 INFO L276 IsEmpty]: Start isEmpty. Operand 5753 states and 16283 transitions. [2021-06-05 08:07:13,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-06-05 08:07:13,576 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:07:13,576 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:07:13,777 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 409 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable413 [2021-06-05 08:07:13,777 INFO L430 AbstractCegarLoop]: === Iteration 415 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:07:13,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:07:13,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1482845970, now seen corresponding path program 406 times [2021-06-05 08:07:13,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:07:13,777 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844323386] [2021-06-05 08:07:13,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:07:13,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:14,157 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:14,158 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:07:14,158 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844323386] [2021-06-05 08:07:14,158 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844323386] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:14,158 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107313741] [2021-06-05 08:07:14,158 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 410 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 410 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:14,231 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:07:14,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:07:14,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 08:07:14,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:07:14,447 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:14,447 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107313741] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:14,447 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:07:14,447 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-06-05 08:07:14,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217424712] [2021-06-05 08:07:14,447 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-06-05 08:07:14,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:07:14,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-06-05 08:07:14,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=969, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 08:07:14,448 INFO L87 Difference]: Start difference. First operand 5753 states and 16283 transitions. Second operand has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:15,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:07:15,303 INFO L93 Difference]: Finished difference Result 7996 states and 20897 transitions. [2021-06-05 08:07:15,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 08:07:15,303 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-06-05 08:07:15,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:07:15,312 INFO L225 Difference]: With dead ends: 7996 [2021-06-05 08:07:15,312 INFO L226 Difference]: Without dead ends: 7726 [2021-06-05 08:07:15,313 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1163 ImplicationChecksByTransitivity, 963.7ms TimeCoverageRelationStatistics Valid=1353, Invalid=4049, Unknown=0, NotChecked=0, Total=5402 [2021-06-05 08:07:15,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7726 states. [2021-06-05 08:07:15,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7726 to 5753. [2021-06-05 08:07:15,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5753 states, 5752 states have (on average 2.8308414464534075) internal successors, (16283), 5752 states have internal predecessors, (16283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:15,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5753 states to 5753 states and 16283 transitions. [2021-06-05 08:07:15,387 INFO L78 Accepts]: Start accepts. Automaton has 5753 states and 16283 transitions. Word has length 175 [2021-06-05 08:07:15,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:07:15,387 INFO L482 AbstractCegarLoop]: Abstraction has 5753 states and 16283 transitions. [2021-06-05 08:07:15,387 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:15,387 INFO L276 IsEmpty]: Start isEmpty. Operand 5753 states and 16283 transitions. [2021-06-05 08:07:15,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-06-05 08:07:15,392 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:07:15,392 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:07:15,605 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 410 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable414 [2021-06-05 08:07:15,605 INFO L430 AbstractCegarLoop]: === Iteration 416 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:07:15,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:07:15,605 INFO L82 PathProgramCache]: Analyzing trace with hash -16161858, now seen corresponding path program 407 times [2021-06-05 08:07:15,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:07:15,605 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016907686] [2021-06-05 08:07:15,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:07:15,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:15,994 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:15,994 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:07:15,994 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016907686] [2021-06-05 08:07:15,994 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016907686] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:15,994 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332795402] [2021-06-05 08:07:15,994 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 411 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 411 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:16,073 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2021-06-05 08:07:16,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:07:16,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 08:07:16,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:07:16,309 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:16,309 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332795402] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:16,309 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:07:16,309 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 36 [2021-06-05 08:07:16,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799660458] [2021-06-05 08:07:16,310 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:07:16,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:07:16,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:07:16,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=1047, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:07:16,310 INFO L87 Difference]: Start difference. First operand 5753 states and 16283 transitions. Second operand has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:17,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:07:17,202 INFO L93 Difference]: Finished difference Result 7946 states and 20797 transitions. [2021-06-05 08:07:17,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 08:07:17,203 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-06-05 08:07:17,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:07:17,211 INFO L225 Difference]: With dead ends: 7946 [2021-06-05 08:07:17,212 INFO L226 Difference]: Without dead ends: 7676 [2021-06-05 08:07:17,212 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1187 ImplicationChecksByTransitivity, 1040.0ms TimeCoverageRelationStatistics Valid=1378, Invalid=4322, Unknown=0, NotChecked=0, Total=5700 [2021-06-05 08:07:17,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7676 states. [2021-06-05 08:07:17,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7676 to 5753. [2021-06-05 08:07:17,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5753 states, 5752 states have (on average 2.8308414464534075) internal successors, (16283), 5752 states have internal predecessors, (16283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:17,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5753 states to 5753 states and 16283 transitions. [2021-06-05 08:07:17,284 INFO L78 Accepts]: Start accepts. Automaton has 5753 states and 16283 transitions. Word has length 175 [2021-06-05 08:07:17,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:07:17,284 INFO L482 AbstractCegarLoop]: Abstraction has 5753 states and 16283 transitions. [2021-06-05 08:07:17,284 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:17,284 INFO L276 IsEmpty]: Start isEmpty. Operand 5753 states and 16283 transitions. [2021-06-05 08:07:17,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-06-05 08:07:17,289 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:07:17,289 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:07:17,489 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 411 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable415 [2021-06-05 08:07:17,489 INFO L430 AbstractCegarLoop]: === Iteration 417 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:07:17,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:07:17,490 INFO L82 PathProgramCache]: Analyzing trace with hash -151383252, now seen corresponding path program 408 times [2021-06-05 08:07:17,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:07:17,490 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800293270] [2021-06-05 08:07:17,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:07:17,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:17,830 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:17,830 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:07:17,830 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800293270] [2021-06-05 08:07:17,830 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800293270] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:17,830 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946494634] [2021-06-05 08:07:17,830 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 412 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 412 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:17,910 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2021-06-05 08:07:17,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:07:17,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 08:07:17,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:07:18,126 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:18,126 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946494634] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:18,126 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:07:18,126 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-06-05 08:07:18,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364451107] [2021-06-05 08:07:18,127 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-06-05 08:07:18,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:07:18,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-06-05 08:07:18,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=985, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 08:07:18,127 INFO L87 Difference]: Start difference. First operand 5753 states and 16283 transitions. Second operand has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:18,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:07:18,962 INFO L93 Difference]: Finished difference Result 7896 states and 20697 transitions. [2021-06-05 08:07:18,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 08:07:18,962 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-06-05 08:07:18,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:07:18,971 INFO L225 Difference]: With dead ends: 7896 [2021-06-05 08:07:18,971 INFO L226 Difference]: Without dead ends: 7626 [2021-06-05 08:07:18,972 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1279 ImplicationChecksByTransitivity, 919.8ms TimeCoverageRelationStatistics Valid=1394, Invalid=4306, Unknown=0, NotChecked=0, Total=5700 [2021-06-05 08:07:18,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7626 states. [2021-06-05 08:07:19,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7626 to 5753. [2021-06-05 08:07:19,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5753 states, 5752 states have (on average 2.8308414464534075) internal successors, (16283), 5752 states have internal predecessors, (16283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:19,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5753 states to 5753 states and 16283 transitions. [2021-06-05 08:07:19,044 INFO L78 Accepts]: Start accepts. Automaton has 5753 states and 16283 transitions. Word has length 175 [2021-06-05 08:07:19,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:07:19,044 INFO L482 AbstractCegarLoop]: Abstraction has 5753 states and 16283 transitions. [2021-06-05 08:07:19,044 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:19,044 INFO L276 IsEmpty]: Start isEmpty. Operand 5753 states and 16283 transitions. [2021-06-05 08:07:19,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-06-05 08:07:19,049 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:07:19,049 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:07:19,249 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 412 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable416 [2021-06-05 08:07:19,249 INFO L430 AbstractCegarLoop]: === Iteration 418 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:07:19,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:07:19,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1028118020, now seen corresponding path program 409 times [2021-06-05 08:07:19,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:07:19,249 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606961170] [2021-06-05 08:07:19,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:07:19,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:19,600 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:19,600 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:07:19,600 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606961170] [2021-06-05 08:07:19,600 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606961170] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:19,600 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910684666] [2021-06-05 08:07:19,600 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 413 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 413 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:19,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:19,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 08:07:19,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:07:19,894 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:19,894 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910684666] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:19,894 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:07:19,894 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 36 [2021-06-05 08:07:19,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479892645] [2021-06-05 08:07:19,894 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:07:19,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:07:19,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:07:19,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1062, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:07:19,894 INFO L87 Difference]: Start difference. First operand 5753 states and 16283 transitions. Second operand has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:20,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:07:20,869 INFO L93 Difference]: Finished difference Result 7846 states and 20597 transitions. [2021-06-05 08:07:20,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-05 08:07:20,869 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-06-05 08:07:20,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:07:20,877 INFO L225 Difference]: With dead ends: 7846 [2021-06-05 08:07:20,877 INFO L226 Difference]: Without dead ends: 7576 [2021-06-05 08:07:20,878 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1306 ImplicationChecksByTransitivity, 1033.4ms TimeCoverageRelationStatistics Valid=1421, Invalid=4585, Unknown=0, NotChecked=0, Total=6006 [2021-06-05 08:07:20,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7576 states. [2021-06-05 08:07:20,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7576 to 5753. [2021-06-05 08:07:20,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5753 states, 5752 states have (on average 2.8308414464534075) internal successors, (16283), 5752 states have internal predecessors, (16283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:20,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5753 states to 5753 states and 16283 transitions. [2021-06-05 08:07:20,948 INFO L78 Accepts]: Start accepts. Automaton has 5753 states and 16283 transitions. Word has length 175 [2021-06-05 08:07:20,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:07:20,949 INFO L482 AbstractCegarLoop]: Abstraction has 5753 states and 16283 transitions. [2021-06-05 08:07:20,949 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:20,949 INFO L276 IsEmpty]: Start isEmpty. Operand 5753 states and 16283 transitions. [2021-06-05 08:07:20,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-06-05 08:07:20,953 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:07:20,953 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:07:21,154 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable417,413 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:21,154 INFO L430 AbstractCegarLoop]: === Iteration 419 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:07:21,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:07:21,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1529522922, now seen corresponding path program 410 times [2021-06-05 08:07:21,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:07:21,154 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265571782] [2021-06-05 08:07:21,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:07:21,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:21,486 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:21,486 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:07:21,486 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265571782] [2021-06-05 08:07:21,486 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265571782] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:21,486 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268562306] [2021-06-05 08:07:21,486 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 414 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 414 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:21,552 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:07:21,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:07:21,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 08:07:21,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:07:21,764 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:21,764 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268562306] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:21,764 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:07:21,764 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-06-05 08:07:21,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495279566] [2021-06-05 08:07:21,764 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-06-05 08:07:21,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:07:21,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-06-05 08:07:21,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=997, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 08:07:21,765 INFO L87 Difference]: Start difference. First operand 5753 states and 16283 transitions. Second operand has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:22,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:07:22,623 INFO L93 Difference]: Finished difference Result 7796 states and 20497 transitions. [2021-06-05 08:07:22,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 08:07:22,623 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-06-05 08:07:22,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:07:22,632 INFO L225 Difference]: With dead ends: 7796 [2021-06-05 08:07:22,632 INFO L226 Difference]: Without dead ends: 7526 [2021-06-05 08:07:22,633 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1399 ImplicationChecksByTransitivity, 932.1ms TimeCoverageRelationStatistics Valid=1451, Invalid=4555, Unknown=0, NotChecked=0, Total=6006 [2021-06-05 08:07:22,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7526 states. [2021-06-05 08:07:22,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7526 to 5753. [2021-06-05 08:07:22,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5753 states, 5752 states have (on average 2.8308414464534075) internal successors, (16283), 5752 states have internal predecessors, (16283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:22,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5753 states to 5753 states and 16283 transitions. [2021-06-05 08:07:22,706 INFO L78 Accepts]: Start accepts. Automaton has 5753 states and 16283 transitions. Word has length 175 [2021-06-05 08:07:22,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:07:22,706 INFO L482 AbstractCegarLoop]: Abstraction has 5753 states and 16283 transitions. [2021-06-05 08:07:22,706 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:22,706 INFO L276 IsEmpty]: Start isEmpty. Operand 5753 states and 16283 transitions. [2021-06-05 08:07:22,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-06-05 08:07:22,711 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:07:22,711 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:07:22,912 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 414 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable418 [2021-06-05 08:07:22,912 INFO L430 AbstractCegarLoop]: === Iteration 420 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:07:22,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:07:22,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1400896070, now seen corresponding path program 411 times [2021-06-05 08:07:22,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:07:22,912 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063360965] [2021-06-05 08:07:22,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:07:22,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:23,269 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:23,269 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:07:23,269 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063360965] [2021-06-05 08:07:23,269 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063360965] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:23,269 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670855009] [2021-06-05 08:07:23,269 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 415 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 415 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:23,348 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-06-05 08:07:23,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:07:23,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 54 conjunts are in the unsatisfiable core [2021-06-05 08:07:23,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:07:23,612 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:23,612 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670855009] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:23,612 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:07:23,612 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 36 [2021-06-05 08:07:23,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120396471] [2021-06-05 08:07:23,612 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:07:23,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:07:23,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:07:23,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=1073, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:07:23,613 INFO L87 Difference]: Start difference. First operand 5753 states and 16283 transitions. Second operand has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:24,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:07:24,705 INFO L93 Difference]: Finished difference Result 7746 states and 20397 transitions. [2021-06-05 08:07:24,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 08:07:24,705 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-06-05 08:07:24,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:07:24,714 INFO L225 Difference]: With dead ends: 7746 [2021-06-05 08:07:24,714 INFO L226 Difference]: Without dead ends: 7476 [2021-06-05 08:07:24,714 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1409 ImplicationChecksByTransitivity, 1152.2ms TimeCoverageRelationStatistics Valid=1447, Invalid=4873, Unknown=0, NotChecked=0, Total=6320 [2021-06-05 08:07:24,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7476 states. [2021-06-05 08:07:24,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7476 to 5753. [2021-06-05 08:07:24,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5753 states, 5752 states have (on average 2.8308414464534075) internal successors, (16283), 5752 states have internal predecessors, (16283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:24,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5753 states to 5753 states and 16283 transitions. [2021-06-05 08:07:24,788 INFO L78 Accepts]: Start accepts. Automaton has 5753 states and 16283 transitions. Word has length 175 [2021-06-05 08:07:24,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:07:24,788 INFO L482 AbstractCegarLoop]: Abstraction has 5753 states and 16283 transitions. [2021-06-05 08:07:24,788 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:24,789 INFO L276 IsEmpty]: Start isEmpty. Operand 5753 states and 16283 transitions. [2021-06-05 08:07:24,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-06-05 08:07:24,793 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:07:24,793 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:07:25,010 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 415 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable419 [2021-06-05 08:07:25,011 INFO L430 AbstractCegarLoop]: === Iteration 421 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:07:25,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:07:25,011 INFO L82 PathProgramCache]: Analyzing trace with hash 616839208, now seen corresponding path program 412 times [2021-06-05 08:07:25,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:07:25,011 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641565307] [2021-06-05 08:07:25,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:07:25,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:25,350 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:25,350 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:07:25,350 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641565307] [2021-06-05 08:07:25,350 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641565307] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:25,350 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918288595] [2021-06-05 08:07:25,350 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 416 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 416 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:25,424 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:07:25,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:07:25,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 08:07:25,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:07:25,631 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:25,631 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918288595] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:25,631 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:07:25,631 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-06-05 08:07:25,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004509712] [2021-06-05 08:07:25,631 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-06-05 08:07:25,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:07:25,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-06-05 08:07:25,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1005, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 08:07:25,632 INFO L87 Difference]: Start difference. First operand 5753 states and 16283 transitions. Second operand has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:26,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:07:26,545 INFO L93 Difference]: Finished difference Result 7696 states and 20297 transitions. [2021-06-05 08:07:26,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 08:07:26,545 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-06-05 08:07:26,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:07:26,554 INFO L225 Difference]: With dead ends: 7696 [2021-06-05 08:07:26,554 INFO L226 Difference]: Without dead ends: 7426 [2021-06-05 08:07:26,554 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1523 ImplicationChecksByTransitivity, 976.7ms TimeCoverageRelationStatistics Valid=1524, Invalid=4796, Unknown=0, NotChecked=0, Total=6320 [2021-06-05 08:07:26,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7426 states. [2021-06-05 08:07:26,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7426 to 5753. [2021-06-05 08:07:26,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5753 states, 5752 states have (on average 2.8308414464534075) internal successors, (16283), 5752 states have internal predecessors, (16283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:26,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5753 states to 5753 states and 16283 transitions. [2021-06-05 08:07:26,626 INFO L78 Accepts]: Start accepts. Automaton has 5753 states and 16283 transitions. Word has length 175 [2021-06-05 08:07:26,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:07:26,626 INFO L482 AbstractCegarLoop]: Abstraction has 5753 states and 16283 transitions. [2021-06-05 08:07:26,626 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:26,626 INFO L276 IsEmpty]: Start isEmpty. Operand 5753 states and 16283 transitions. [2021-06-05 08:07:26,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-06-05 08:07:26,631 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:07:26,631 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:07:26,845 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 416 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable420 [2021-06-05 08:07:26,845 INFO L430 AbstractCegarLoop]: === Iteration 422 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:07:26,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:07:26,845 INFO L82 PathProgramCache]: Analyzing trace with hash -281684232, now seen corresponding path program 413 times [2021-06-05 08:07:26,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:07:26,845 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835373891] [2021-06-05 08:07:26,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:07:26,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:27,241 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:27,241 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:07:27,241 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835373891] [2021-06-05 08:07:27,241 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835373891] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:27,241 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437710741] [2021-06-05 08:07:27,241 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 417 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 417 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:27,320 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2021-06-05 08:07:27,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:07:27,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 08:07:27,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:07:27,555 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:27,555 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437710741] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:27,555 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:07:27,555 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 36 [2021-06-05 08:07:27,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100369872] [2021-06-05 08:07:27,555 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:07:27,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:07:27,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:07:27,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1080, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:07:27,556 INFO L87 Difference]: Start difference. First operand 5753 states and 16283 transitions. Second operand has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:28,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:07:28,670 INFO L93 Difference]: Finished difference Result 7646 states and 20197 transitions. [2021-06-05 08:07:28,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-06-05 08:07:28,670 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-06-05 08:07:28,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:07:28,678 INFO L225 Difference]: With dead ends: 7646 [2021-06-05 08:07:28,678 INFO L226 Difference]: Without dead ends: 7376 [2021-06-05 08:07:28,679 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1556 ImplicationChecksByTransitivity, 1224.6ms TimeCoverageRelationStatistics Valid=1555, Invalid=5087, Unknown=0, NotChecked=0, Total=6642 [2021-06-05 08:07:28,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7376 states. [2021-06-05 08:07:28,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7376 to 5753. [2021-06-05 08:07:28,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5753 states, 5752 states have (on average 2.8308414464534075) internal successors, (16283), 5752 states have internal predecessors, (16283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:28,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5753 states to 5753 states and 16283 transitions. [2021-06-05 08:07:28,748 INFO L78 Accepts]: Start accepts. Automaton has 5753 states and 16283 transitions. Word has length 175 [2021-06-05 08:07:28,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:07:28,748 INFO L482 AbstractCegarLoop]: Abstraction has 5753 states and 16283 transitions. [2021-06-05 08:07:28,748 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:28,748 INFO L276 IsEmpty]: Start isEmpty. Operand 5753 states and 16283 transitions. [2021-06-05 08:07:28,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-06-05 08:07:28,753 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:07:28,753 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:07:28,969 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 417 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable421 [2021-06-05 08:07:28,969 INFO L430 AbstractCegarLoop]: === Iteration 423 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:07:28,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:07:28,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1896637722, now seen corresponding path program 414 times [2021-06-05 08:07:28,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:07:28,970 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138350357] [2021-06-05 08:07:28,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:07:28,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:29,303 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:29,304 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:07:29,304 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138350357] [2021-06-05 08:07:29,304 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138350357] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:29,304 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669000903] [2021-06-05 08:07:29,304 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 418 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 418 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:29,401 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2021-06-05 08:07:29,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:07:29,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 08:07:29,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:07:29,609 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:29,609 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669000903] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:29,609 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:07:29,609 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-06-05 08:07:29,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792029427] [2021-06-05 08:07:29,609 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-06-05 08:07:29,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:07:29,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-06-05 08:07:29,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1009, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 08:07:29,610 INFO L87 Difference]: Start difference. First operand 5753 states and 16283 transitions. Second operand has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:30,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:07:30,535 INFO L93 Difference]: Finished difference Result 7596 states and 20097 transitions. [2021-06-05 08:07:30,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 08:07:30,535 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-06-05 08:07:30,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:07:30,543 INFO L225 Difference]: With dead ends: 7596 [2021-06-05 08:07:30,543 INFO L226 Difference]: Without dead ends: 7326 [2021-06-05 08:07:30,544 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1651 ImplicationChecksByTransitivity, 1009.7ms TimeCoverageRelationStatistics Valid=1613, Invalid=5029, Unknown=0, NotChecked=0, Total=6642 [2021-06-05 08:07:30,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7326 states. [2021-06-05 08:07:30,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7326 to 5753. [2021-06-05 08:07:30,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5753 states, 5752 states have (on average 2.8308414464534075) internal successors, (16283), 5752 states have internal predecessors, (16283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:30,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5753 states to 5753 states and 16283 transitions. [2021-06-05 08:07:30,650 INFO L78 Accepts]: Start accepts. Automaton has 5753 states and 16283 transitions. Word has length 175 [2021-06-05 08:07:30,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:07:30,651 INFO L482 AbstractCegarLoop]: Abstraction has 5753 states and 16283 transitions. [2021-06-05 08:07:30,651 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:30,651 INFO L276 IsEmpty]: Start isEmpty. Operand 5753 states and 16283 transitions. [2021-06-05 08:07:30,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-06-05 08:07:30,655 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:07:30,655 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:07:30,856 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable422,418 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:30,856 INFO L430 AbstractCegarLoop]: === Iteration 424 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:07:30,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:07:30,856 INFO L82 PathProgramCache]: Analyzing trace with hash 2017885622, now seen corresponding path program 415 times [2021-06-05 08:07:30,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:07:30,856 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945403823] [2021-06-05 08:07:30,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:07:30,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:31,198 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:31,198 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:07:31,198 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945403823] [2021-06-05 08:07:31,198 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945403823] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:31,198 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631465164] [2021-06-05 08:07:31,198 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 419 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 419 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:31,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:31,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 08:07:31,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:07:31,490 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:31,490 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631465164] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:31,490 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:07:31,490 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 36 [2021-06-05 08:07:31,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516598059] [2021-06-05 08:07:31,490 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:07:31,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:07:31,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:07:31,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=1083, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:07:31,491 INFO L87 Difference]: Start difference. First operand 5753 states and 16283 transitions. Second operand has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:32,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:07:32,660 INFO L93 Difference]: Finished difference Result 7546 states and 19997 transitions. [2021-06-05 08:07:32,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-05 08:07:32,660 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-06-05 08:07:32,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:07:32,669 INFO L225 Difference]: With dead ends: 7546 [2021-06-05 08:07:32,669 INFO L226 Difference]: Without dead ends: 7276 [2021-06-05 08:07:32,670 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1687 ImplicationChecksByTransitivity, 1219.7ms TimeCoverageRelationStatistics Valid=1646, Invalid=5326, Unknown=0, NotChecked=0, Total=6972 [2021-06-05 08:07:32,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7276 states. [2021-06-05 08:07:32,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7276 to 5753. [2021-06-05 08:07:32,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5753 states, 5752 states have (on average 2.8308414464534075) internal successors, (16283), 5752 states have internal predecessors, (16283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:32,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5753 states to 5753 states and 16283 transitions. [2021-06-05 08:07:32,748 INFO L78 Accepts]: Start accepts. Automaton has 5753 states and 16283 transitions. Word has length 175 [2021-06-05 08:07:32,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:07:32,748 INFO L482 AbstractCegarLoop]: Abstraction has 5753 states and 16283 transitions. [2021-06-05 08:07:32,748 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:32,748 INFO L276 IsEmpty]: Start isEmpty. Operand 5753 states and 16283 transitions. [2021-06-05 08:07:32,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-06-05 08:07:32,753 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:07:32,753 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:07:32,970 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 419 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable423 [2021-06-05 08:07:32,970 INFO L430 AbstractCegarLoop]: === Iteration 425 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:07:32,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:07:32,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1652706524, now seen corresponding path program 416 times [2021-06-05 08:07:32,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:07:32,970 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769457029] [2021-06-05 08:07:32,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:07:32,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:33,293 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:33,293 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:07:33,293 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769457029] [2021-06-05 08:07:33,293 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769457029] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:33,294 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309433076] [2021-06-05 08:07:33,294 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 420 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 420 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:33,371 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:07:33,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:07:33,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 08:07:33,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:07:33,573 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:33,573 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309433076] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:33,573 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:07:33,573 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-06-05 08:07:33,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777647026] [2021-06-05 08:07:33,573 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-06-05 08:07:33,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:07:33,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-06-05 08:07:33,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1009, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 08:07:33,574 INFO L87 Difference]: Start difference. First operand 5753 states and 16283 transitions. Second operand has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:34,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:07:34,585 INFO L93 Difference]: Finished difference Result 7496 states and 19897 transitions. [2021-06-05 08:07:34,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 08:07:34,586 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-06-05 08:07:34,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:07:34,593 INFO L225 Difference]: With dead ends: 7496 [2021-06-05 08:07:34,593 INFO L226 Difference]: Without dead ends: 7226 [2021-06-05 08:07:34,594 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1783 ImplicationChecksByTransitivity, 1031.3ms TimeCoverageRelationStatistics Valid=1718, Invalid=5254, Unknown=0, NotChecked=0, Total=6972 [2021-06-05 08:07:34,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7226 states. [2021-06-05 08:07:34,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7226 to 5753. [2021-06-05 08:07:34,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5753 states, 5752 states have (on average 2.8308414464534075) internal successors, (16283), 5752 states have internal predecessors, (16283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:34,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5753 states to 5753 states and 16283 transitions. [2021-06-05 08:07:34,665 INFO L78 Accepts]: Start accepts. Automaton has 5753 states and 16283 transitions. Word has length 175 [2021-06-05 08:07:34,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:07:34,665 INFO L482 AbstractCegarLoop]: Abstraction has 5753 states and 16283 transitions. [2021-06-05 08:07:34,665 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:34,665 INFO L276 IsEmpty]: Start isEmpty. Operand 5753 states and 16283 transitions. [2021-06-05 08:07:34,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-06-05 08:07:34,670 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:07:34,670 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:07:34,886 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable424,420 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:34,887 INFO L430 AbstractCegarLoop]: === Iteration 426 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:07:34,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:07:34,887 INFO L82 PathProgramCache]: Analyzing trace with hash -843654668, now seen corresponding path program 417 times [2021-06-05 08:07:34,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:07:34,887 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646252605] [2021-06-05 08:07:34,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:07:34,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:35,221 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:35,221 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:07:35,221 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646252605] [2021-06-05 08:07:35,221 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646252605] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:35,222 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631689335] [2021-06-05 08:07:35,222 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 421 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 421 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:35,306 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-06-05 08:07:35,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:07:35,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 48 conjunts are in the unsatisfiable core [2021-06-05 08:07:35,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:07:35,521 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:35,521 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631689335] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:35,521 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:07:35,521 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 36 [2021-06-05 08:07:35,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719840281] [2021-06-05 08:07:35,521 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:07:35,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:07:35,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:07:35,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=1082, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:07:35,522 INFO L87 Difference]: Start difference. First operand 5753 states and 16283 transitions. Second operand has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:36,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:07:36,753 INFO L93 Difference]: Finished difference Result 7446 states and 19797 transitions. [2021-06-05 08:07:36,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-05 08:07:36,754 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-06-05 08:07:36,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:07:36,762 INFO L225 Difference]: With dead ends: 7446 [2021-06-05 08:07:36,762 INFO L226 Difference]: Without dead ends: 7176 [2021-06-05 08:07:36,763 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1775 ImplicationChecksByTransitivity, 1244.2ms TimeCoverageRelationStatistics Valid=1666, Invalid=5644, Unknown=0, NotChecked=0, Total=7310 [2021-06-05 08:07:36,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7176 states. [2021-06-05 08:07:36,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7176 to 5753. [2021-06-05 08:07:36,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5753 states, 5752 states have (on average 2.8308414464534075) internal successors, (16283), 5752 states have internal predecessors, (16283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:36,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5753 states to 5753 states and 16283 transitions. [2021-06-05 08:07:36,836 INFO L78 Accepts]: Start accepts. Automaton has 5753 states and 16283 transitions. Word has length 175 [2021-06-05 08:07:36,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:07:36,837 INFO L482 AbstractCegarLoop]: Abstraction has 5753 states and 16283 transitions. [2021-06-05 08:07:36,837 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:36,837 INFO L276 IsEmpty]: Start isEmpty. Operand 5753 states and 16283 transitions. [2021-06-05 08:07:36,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-06-05 08:07:36,842 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:07:36,842 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:07:37,042 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 421 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable425 [2021-06-05 08:07:37,043 INFO L430 AbstractCegarLoop]: === Iteration 427 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:07:37,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:07:37,043 INFO L82 PathProgramCache]: Analyzing trace with hash 2059362530, now seen corresponding path program 418 times [2021-06-05 08:07:37,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:07:37,043 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956679284] [2021-06-05 08:07:37,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:07:37,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:37,359 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:37,360 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:07:37,360 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956679284] [2021-06-05 08:07:37,360 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956679284] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:37,360 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814573562] [2021-06-05 08:07:37,360 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 422 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 422 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:37,435 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:07:37,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:07:37,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 08:07:37,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:07:37,634 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:37,634 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814573562] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:37,634 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:07:37,634 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-06-05 08:07:37,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483349443] [2021-06-05 08:07:37,635 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-06-05 08:07:37,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:07:37,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-06-05 08:07:37,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1005, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 08:07:37,635 INFO L87 Difference]: Start difference. First operand 5753 states and 16283 transitions. Second operand has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:38,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:07:38,661 INFO L93 Difference]: Finished difference Result 7396 states and 19697 transitions. [2021-06-05 08:07:38,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-05 08:07:38,661 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-06-05 08:07:38,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:07:38,669 INFO L225 Difference]: With dead ends: 7396 [2021-06-05 08:07:38,669 INFO L226 Difference]: Without dead ends: 7126 [2021-06-05 08:07:38,670 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1919 ImplicationChecksByTransitivity, 1064.0ms TimeCoverageRelationStatistics Valid=1839, Invalid=5471, Unknown=0, NotChecked=0, Total=7310 [2021-06-05 08:07:38,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7126 states. [2021-06-05 08:07:38,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7126 to 5753. [2021-06-05 08:07:38,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5753 states, 5752 states have (on average 2.8308414464534075) internal successors, (16283), 5752 states have internal predecessors, (16283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:38,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5753 states to 5753 states and 16283 transitions. [2021-06-05 08:07:38,741 INFO L78 Accepts]: Start accepts. Automaton has 5753 states and 16283 transitions. Word has length 175 [2021-06-05 08:07:38,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:07:38,741 INFO L482 AbstractCegarLoop]: Abstraction has 5753 states and 16283 transitions. [2021-06-05 08:07:38,741 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:38,741 INFO L276 IsEmpty]: Start isEmpty. Operand 5753 states and 16283 transitions. [2021-06-05 08:07:38,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-06-05 08:07:38,746 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:07:38,746 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:07:38,961 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable426,422 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:38,961 INFO L430 AbstractCegarLoop]: === Iteration 428 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:07:38,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:07:38,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1814285234, now seen corresponding path program 419 times [2021-06-05 08:07:38,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:07:38,961 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090987760] [2021-06-05 08:07:38,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:07:38,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:39,294 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:39,294 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:07:39,294 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090987760] [2021-06-05 08:07:39,294 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090987760] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:39,294 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697282156] [2021-06-05 08:07:39,294 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 423 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 423 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:39,372 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2021-06-05 08:07:39,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:07:39,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 08:07:39,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:07:39,591 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:39,591 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697282156] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:39,591 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:07:39,591 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 36 [2021-06-05 08:07:39,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784106939] [2021-06-05 08:07:39,591 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:07:39,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:07:39,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:07:39,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1077, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:07:39,592 INFO L87 Difference]: Start difference. First operand 5753 states and 16283 transitions. Second operand has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:40,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:07:40,887 INFO L93 Difference]: Finished difference Result 7346 states and 19597 transitions. [2021-06-05 08:07:40,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-06-05 08:07:40,887 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-06-05 08:07:40,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:07:40,895 INFO L225 Difference]: With dead ends: 7346 [2021-06-05 08:07:40,895 INFO L226 Difference]: Without dead ends: 7076 [2021-06-05 08:07:40,896 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1961 ImplicationChecksByTransitivity, 1300.2ms TimeCoverageRelationStatistics Valid=1876, Invalid=5780, Unknown=0, NotChecked=0, Total=7656 [2021-06-05 08:07:40,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7076 states. [2021-06-05 08:07:40,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7076 to 5753. [2021-06-05 08:07:40,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5753 states, 5752 states have (on average 2.8308414464534075) internal successors, (16283), 5752 states have internal predecessors, (16283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:40,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5753 states to 5753 states and 16283 transitions. [2021-06-05 08:07:40,966 INFO L78 Accepts]: Start accepts. Automaton has 5753 states and 16283 transitions. Word has length 175 [2021-06-05 08:07:40,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:07:40,966 INFO L482 AbstractCegarLoop]: Abstraction has 5753 states and 16283 transitions. [2021-06-05 08:07:40,966 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:40,966 INFO L276 IsEmpty]: Start isEmpty. Operand 5753 states and 16283 transitions. [2021-06-05 08:07:40,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-06-05 08:07:40,971 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:07:40,971 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:07:41,180 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable427,423 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:41,181 INFO L430 AbstractCegarLoop]: === Iteration 429 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:07:41,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:07:41,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1437434912, now seen corresponding path program 420 times [2021-06-05 08:07:41,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:07:41,181 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422213430] [2021-06-05 08:07:41,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:07:41,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:41,516 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:41,517 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:07:41,517 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422213430] [2021-06-05 08:07:41,517 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422213430] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:41,517 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110725297] [2021-06-05 08:07:41,517 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 424 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 424 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:41,596 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2021-06-05 08:07:41,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:07:41,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 44 conjunts are in the unsatisfiable core [2021-06-05 08:07:41,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:07:41,793 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:41,793 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110725297] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:41,793 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:07:41,793 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-06-05 08:07:41,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231434684] [2021-06-05 08:07:41,793 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-06-05 08:07:41,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:07:41,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-06-05 08:07:41,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=997, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 08:07:41,794 INFO L87 Difference]: Start difference. First operand 5753 states and 16283 transitions. Second operand has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:42,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:07:42,870 INFO L93 Difference]: Finished difference Result 7296 states and 19497 transitions. [2021-06-05 08:07:42,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-05 08:07:42,870 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-06-05 08:07:42,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:07:42,878 INFO L225 Difference]: With dead ends: 7296 [2021-06-05 08:07:42,878 INFO L226 Difference]: Without dead ends: 7026 [2021-06-05 08:07:42,879 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2059 ImplicationChecksByTransitivity, 1116.5ms TimeCoverageRelationStatistics Valid=1976, Invalid=5680, Unknown=0, NotChecked=0, Total=7656 [2021-06-05 08:07:42,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7026 states. [2021-06-05 08:07:42,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7026 to 5753. [2021-06-05 08:07:42,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5753 states, 5752 states have (on average 2.8308414464534075) internal successors, (16283), 5752 states have internal predecessors, (16283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:42,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5753 states to 5753 states and 16283 transitions. [2021-06-05 08:07:42,947 INFO L78 Accepts]: Start accepts. Automaton has 5753 states and 16283 transitions. Word has length 175 [2021-06-05 08:07:42,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:07:42,947 INFO L482 AbstractCegarLoop]: Abstraction has 5753 states and 16283 transitions. [2021-06-05 08:07:42,947 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:42,947 INFO L276 IsEmpty]: Start isEmpty. Operand 5753 states and 16283 transitions. [2021-06-05 08:07:42,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-06-05 08:07:42,952 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:07:42,952 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:07:43,152 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable428,424 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:43,152 INFO L430 AbstractCegarLoop]: === Iteration 430 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:07:43,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:07:43,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1530776848, now seen corresponding path program 421 times [2021-06-05 08:07:43,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:07:43,152 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753650261] [2021-06-05 08:07:43,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:07:43,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:43,469 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:43,469 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:07:43,469 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753650261] [2021-06-05 08:07:43,469 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753650261] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:43,469 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483425422] [2021-06-05 08:07:43,469 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 425 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 425 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:43,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:43,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 08:07:43,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:07:43,772 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:43,773 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483425422] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:43,773 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:07:43,773 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 36 [2021-06-05 08:07:43,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744052396] [2021-06-05 08:07:43,773 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:07:43,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:07:43,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:07:43,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1068, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:07:43,773 INFO L87 Difference]: Start difference. First operand 5753 states and 16283 transitions. Second operand has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:45,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:07:45,206 INFO L93 Difference]: Finished difference Result 7246 states and 19397 transitions. [2021-06-05 08:07:45,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-05 08:07:45,207 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-06-05 08:07:45,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:07:45,213 INFO L225 Difference]: With dead ends: 7246 [2021-06-05 08:07:45,213 INFO L226 Difference]: Without dead ends: 6976 [2021-06-05 08:07:45,214 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2104 ImplicationChecksByTransitivity, 1414.6ms TimeCoverageRelationStatistics Valid=2015, Invalid=5995, Unknown=0, NotChecked=0, Total=8010 [2021-06-05 08:07:45,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6976 states. [2021-06-05 08:07:45,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6976 to 5753. [2021-06-05 08:07:45,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5753 states, 5752 states have (on average 2.8308414464534075) internal successors, (16283), 5752 states have internal predecessors, (16283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:45,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5753 states to 5753 states and 16283 transitions. [2021-06-05 08:07:45,281 INFO L78 Accepts]: Start accepts. Automaton has 5753 states and 16283 transitions. Word has length 175 [2021-06-05 08:07:45,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:07:45,281 INFO L482 AbstractCegarLoop]: Abstraction has 5753 states and 16283 transitions. [2021-06-05 08:07:45,282 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:45,282 INFO L276 IsEmpty]: Start isEmpty. Operand 5753 states and 16283 transitions. [2021-06-05 08:07:45,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-06-05 08:07:45,287 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:07:45,287 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:07:45,503 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable429,425 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:45,503 INFO L430 AbstractCegarLoop]: === Iteration 431 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:07:45,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:07:45,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1076560674, now seen corresponding path program 422 times [2021-06-05 08:07:45,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:07:45,504 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087423033] [2021-06-05 08:07:45,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:07:45,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:45,826 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:45,826 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:07:45,826 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087423033] [2021-06-05 08:07:45,826 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087423033] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:45,826 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543976583] [2021-06-05 08:07:45,826 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 426 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 426 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:45,913 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:07:45,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:07:45,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 08:07:45,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:07:46,111 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:46,112 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543976583] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:46,112 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:07:46,112 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-06-05 08:07:46,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447602219] [2021-06-05 08:07:46,112 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-06-05 08:07:46,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:07:46,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-06-05 08:07:46,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=985, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 08:07:46,112 INFO L87 Difference]: Start difference. First operand 5753 states and 16283 transitions. Second operand has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:47,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:07:47,342 INFO L93 Difference]: Finished difference Result 7196 states and 19297 transitions. [2021-06-05 08:07:47,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-06-05 08:07:47,342 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-06-05 08:07:47,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:07:47,350 INFO L225 Difference]: With dead ends: 7196 [2021-06-05 08:07:47,350 INFO L226 Difference]: Without dead ends: 6926 [2021-06-05 08:07:47,351 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2203 ImplicationChecksByTransitivity, 1216.4ms TimeCoverageRelationStatistics Valid=2129, Invalid=5881, Unknown=0, NotChecked=0, Total=8010 [2021-06-05 08:07:47,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6926 states. [2021-06-05 08:07:47,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6926 to 5753. [2021-06-05 08:07:47,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5753 states, 5752 states have (on average 2.8308414464534075) internal successors, (16283), 5752 states have internal predecessors, (16283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:47,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5753 states to 5753 states and 16283 transitions. [2021-06-05 08:07:47,423 INFO L78 Accepts]: Start accepts. Automaton has 5753 states and 16283 transitions. Word has length 175 [2021-06-05 08:07:47,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:07:47,423 INFO L482 AbstractCegarLoop]: Abstraction has 5753 states and 16283 transitions. [2021-06-05 08:07:47,423 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:47,423 INFO L276 IsEmpty]: Start isEmpty. Operand 5753 states and 16283 transitions. [2021-06-05 08:07:47,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-06-05 08:07:47,428 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:07:47,428 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:07:47,645 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable430,426 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:47,645 INFO L430 AbstractCegarLoop]: === Iteration 432 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:07:47,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:07:47,645 INFO L82 PathProgramCache]: Analyzing trace with hash -77664338, now seen corresponding path program 423 times [2021-06-05 08:07:47,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:07:47,645 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233158336] [2021-06-05 08:07:47,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:07:47,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:47,973 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:47,973 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:07:47,973 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233158336] [2021-06-05 08:07:47,973 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233158336] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:47,973 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988950646] [2021-06-05 08:07:47,973 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 427 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 427 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:48,064 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-06-05 08:07:48,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:07:48,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 42 conjunts are in the unsatisfiable core [2021-06-05 08:07:48,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:07:48,280 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:48,280 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988950646] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:48,280 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:07:48,280 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 36 [2021-06-05 08:07:48,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070043548] [2021-06-05 08:07:48,280 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:07:48,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:07:48,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:07:48,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=1055, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:07:48,281 INFO L87 Difference]: Start difference. First operand 5753 states and 16283 transitions. Second operand has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:49,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:07:49,725 INFO L93 Difference]: Finished difference Result 7146 states and 19197 transitions. [2021-06-05 08:07:49,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-06-05 08:07:49,725 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-06-05 08:07:49,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:07:49,732 INFO L225 Difference]: With dead ends: 7146 [2021-06-05 08:07:49,732 INFO L226 Difference]: Without dead ends: 6876 [2021-06-05 08:07:49,733 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2168 ImplicationChecksByTransitivity, 1411.0ms TimeCoverageRelationStatistics Valid=2002, Invalid=6370, Unknown=0, NotChecked=0, Total=8372 [2021-06-05 08:07:49,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6876 states. [2021-06-05 08:07:49,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6876 to 5753. [2021-06-05 08:07:49,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5753 states, 5752 states have (on average 2.8308414464534075) internal successors, (16283), 5752 states have internal predecessors, (16283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:49,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5753 states to 5753 states and 16283 transitions. [2021-06-05 08:07:49,798 INFO L78 Accepts]: Start accepts. Automaton has 5753 states and 16283 transitions. Word has length 175 [2021-06-05 08:07:49,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:07:49,799 INFO L482 AbstractCegarLoop]: Abstraction has 5753 states and 16283 transitions. [2021-06-05 08:07:49,799 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:49,799 INFO L276 IsEmpty]: Start isEmpty. Operand 5753 states and 16283 transitions. [2021-06-05 08:07:49,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-06-05 08:07:49,803 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:07:49,804 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:07:50,004 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 427 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable431 [2021-06-05 08:07:50,004 INFO L430 AbstractCegarLoop]: === Iteration 433 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:07:50,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:07:50,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1956992228, now seen corresponding path program 424 times [2021-06-05 08:07:50,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:07:50,005 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661176590] [2021-06-05 08:07:50,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:07:50,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:50,311 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:50,311 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:07:50,311 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661176590] [2021-06-05 08:07:50,311 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661176590] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:50,311 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410648500] [2021-06-05 08:07:50,311 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 428 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 428 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:50,378 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:07:50,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:07:50,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 08:07:50,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:07:50,580 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:50,580 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410648500] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:50,580 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:07:50,580 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-06-05 08:07:50,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294795162] [2021-06-05 08:07:50,581 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-06-05 08:07:50,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:07:50,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-06-05 08:07:50,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=969, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 08:07:50,581 INFO L87 Difference]: Start difference. First operand 5753 states and 16283 transitions. Second operand has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:51,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:07:51,742 INFO L93 Difference]: Finished difference Result 7096 states and 19097 transitions. [2021-06-05 08:07:51,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-05 08:07:51,742 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-06-05 08:07:51,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:07:51,749 INFO L225 Difference]: With dead ends: 7096 [2021-06-05 08:07:51,750 INFO L226 Difference]: Without dead ends: 6826 [2021-06-05 08:07:51,750 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2351 ImplicationChecksByTransitivity, 1135.5ms TimeCoverageRelationStatistics Valid=2298, Invalid=6074, Unknown=0, NotChecked=0, Total=8372 [2021-06-05 08:07:51,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6826 states. [2021-06-05 08:07:51,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6826 to 5753. [2021-06-05 08:07:51,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5753 states, 5752 states have (on average 2.8308414464534075) internal successors, (16283), 5752 states have internal predecessors, (16283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:51,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5753 states to 5753 states and 16283 transitions. [2021-06-05 08:07:51,817 INFO L78 Accepts]: Start accepts. Automaton has 5753 states and 16283 transitions. Word has length 175 [2021-06-05 08:07:51,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:07:51,817 INFO L482 AbstractCegarLoop]: Abstraction has 5753 states and 16283 transitions. [2021-06-05 08:07:51,817 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:51,817 INFO L276 IsEmpty]: Start isEmpty. Operand 5753 states and 16283 transitions. [2021-06-05 08:07:51,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-06-05 08:07:51,822 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:07:51,822 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:07:52,037 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 428 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable432 [2021-06-05 08:07:52,037 INFO L430 AbstractCegarLoop]: === Iteration 434 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:07:52,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:07:52,037 INFO L82 PathProgramCache]: Analyzing trace with hash 73327084, now seen corresponding path program 425 times [2021-06-05 08:07:52,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:07:52,037 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080559278] [2021-06-05 08:07:52,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:07:52,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:52,352 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:52,352 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:07:52,352 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080559278] [2021-06-05 08:07:52,352 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080559278] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:52,353 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707319273] [2021-06-05 08:07:52,353 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 429 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 429 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:52,423 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2021-06-05 08:07:52,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:07:52,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 08:07:52,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:07:52,684 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:52,684 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707319273] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:52,684 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:07:52,684 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 36 [2021-06-05 08:07:52,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718415423] [2021-06-05 08:07:52,684 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:07:52,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:07:52,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:07:52,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=1038, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:07:52,685 INFO L87 Difference]: Start difference. First operand 5753 states and 16283 transitions. Second operand has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:54,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:07:54,395 INFO L93 Difference]: Finished difference Result 7046 states and 18997 transitions. [2021-06-05 08:07:54,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-06-05 08:07:54,395 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-06-05 08:07:54,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:07:54,404 INFO L225 Difference]: With dead ends: 7046 [2021-06-05 08:07:54,404 INFO L226 Difference]: Without dead ends: 6776 [2021-06-05 08:07:54,405 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2402 ImplicationChecksByTransitivity, 1650.7ms TimeCoverageRelationStatistics Valid=2341, Invalid=6401, Unknown=0, NotChecked=0, Total=8742 [2021-06-05 08:07:54,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6776 states. [2021-06-05 08:07:54,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6776 to 5753. [2021-06-05 08:07:54,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5753 states, 5752 states have (on average 2.8308414464534075) internal successors, (16283), 5752 states have internal predecessors, (16283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:54,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5753 states to 5753 states and 16283 transitions. [2021-06-05 08:07:54,479 INFO L78 Accepts]: Start accepts. Automaton has 5753 states and 16283 transitions. Word has length 175 [2021-06-05 08:07:54,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:07:54,479 INFO L482 AbstractCegarLoop]: Abstraction has 5753 states and 16283 transitions. [2021-06-05 08:07:54,479 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:54,479 INFO L276 IsEmpty]: Start isEmpty. Operand 5753 states and 16283 transitions. [2021-06-05 08:07:54,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-06-05 08:07:54,484 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:07:54,484 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:07:54,697 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 429 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable433 [2021-06-05 08:07:54,697 INFO L430 AbstractCegarLoop]: === Iteration 435 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:07:54,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:07:54,697 INFO L82 PathProgramCache]: Analyzing trace with hash 687566554, now seen corresponding path program 426 times [2021-06-05 08:07:54,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:07:54,697 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775175530] [2021-06-05 08:07:54,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:07:54,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:55,050 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:55,050 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:07:55,050 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775175530] [2021-06-05 08:07:55,050 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775175530] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:55,050 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456063159] [2021-06-05 08:07:55,050 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 430 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 430 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:55,139 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2021-06-05 08:07:55,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:07:55,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 08:07:55,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:07:55,338 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:55,338 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456063159] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:55,338 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:07:55,338 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-06-05 08:07:55,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367675124] [2021-06-05 08:07:55,339 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-06-05 08:07:55,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:07:55,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-06-05 08:07:55,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=949, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 08:07:55,339 INFO L87 Difference]: Start difference. First operand 5753 states and 16283 transitions. Second operand has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:56,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:07:56,670 INFO L93 Difference]: Finished difference Result 6996 states and 18897 transitions. [2021-06-05 08:07:56,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-06-05 08:07:56,670 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-06-05 08:07:56,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:07:56,677 INFO L225 Difference]: With dead ends: 6996 [2021-06-05 08:07:56,677 INFO L226 Difference]: Without dead ends: 6726 [2021-06-05 08:07:56,677 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2503 ImplicationChecksByTransitivity, 1346.9ms TimeCoverageRelationStatistics Valid=2483, Invalid=6259, Unknown=0, NotChecked=0, Total=8742 [2021-06-05 08:07:56,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6726 states. [2021-06-05 08:07:56,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6726 to 5753. [2021-06-05 08:07:56,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5753 states, 5752 states have (on average 2.8308414464534075) internal successors, (16283), 5752 states have internal predecessors, (16283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:56,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5753 states to 5753 states and 16283 transitions. [2021-06-05 08:07:56,744 INFO L78 Accepts]: Start accepts. Automaton has 5753 states and 16283 transitions. Word has length 175 [2021-06-05 08:07:56,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:07:56,744 INFO L482 AbstractCegarLoop]: Abstraction has 5753 states and 16283 transitions. [2021-06-05 08:07:56,744 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:56,744 INFO L276 IsEmpty]: Start isEmpty. Operand 5753 states and 16283 transitions. [2021-06-05 08:07:56,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-06-05 08:07:56,749 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:07:56,749 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:07:56,966 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable434,430 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:56,966 INFO L430 AbstractCegarLoop]: === Iteration 436 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:07:56,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:07:56,966 INFO L82 PathProgramCache]: Analyzing trace with hash -1027675734, now seen corresponding path program 427 times [2021-06-05 08:07:56,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:07:56,966 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420131301] [2021-06-05 08:07:56,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:07:56,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:57,317 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:57,317 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:07:57,317 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420131301] [2021-06-05 08:07:57,317 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420131301] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:57,318 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111235730] [2021-06-05 08:07:57,318 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 431 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 431 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:07:57,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:57,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 08:07:57,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:07:57,656 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:57,656 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111235730] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:57,656 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:07:57,656 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 36 [2021-06-05 08:07:57,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669283367] [2021-06-05 08:07:57,657 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:07:57,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:07:57,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:07:57,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=1017, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:07:57,657 INFO L87 Difference]: Start difference. First operand 5753 states and 16283 transitions. Second operand has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:59,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:07:59,279 INFO L93 Difference]: Finished difference Result 7006 states and 18947 transitions. [2021-06-05 08:07:59,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-05 08:07:59,280 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-06-05 08:07:59,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:07:59,288 INFO L225 Difference]: With dead ends: 7006 [2021-06-05 08:07:59,288 INFO L226 Difference]: Without dead ends: 6736 [2021-06-05 08:07:59,289 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2557 ImplicationChecksByTransitivity, 1592.0ms TimeCoverageRelationStatistics Valid=2528, Invalid=6592, Unknown=0, NotChecked=0, Total=9120 [2021-06-05 08:07:59,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6736 states. [2021-06-05 08:07:59,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6736 to 5753. [2021-06-05 08:07:59,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5753 states, 5752 states have (on average 2.831710709318498) internal successors, (16288), 5752 states have internal predecessors, (16288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:59,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5753 states to 5753 states and 16288 transitions. [2021-06-05 08:07:59,361 INFO L78 Accepts]: Start accepts. Automaton has 5753 states and 16288 transitions. Word has length 175 [2021-06-05 08:07:59,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:07:59,361 INFO L482 AbstractCegarLoop]: Abstraction has 5753 states and 16288 transitions. [2021-06-05 08:07:59,361 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:07:59,361 INFO L276 IsEmpty]: Start isEmpty. Operand 5753 states and 16288 transitions. [2021-06-05 08:07:59,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-06-05 08:07:59,366 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:07:59,367 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:07:59,577 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 431 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable435 [2021-06-05 08:07:59,577 INFO L430 AbstractCegarLoop]: === Iteration 437 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:07:59,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:07:59,577 INFO L82 PathProgramCache]: Analyzing trace with hash -2060323336, now seen corresponding path program 428 times [2021-06-05 08:07:59,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:07:59,577 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841899905] [2021-06-05 08:07:59,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:07:59,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:07:59,928 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:07:59,928 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:07:59,928 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841899905] [2021-06-05 08:07:59,928 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841899905] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:07:59,928 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745519846] [2021-06-05 08:07:59,928 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 432 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 432 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:00,008 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:08:00,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:08:00,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-05 08:08:00,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:08:00,206 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:00,207 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745519846] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:00,207 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:08:00,207 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-06-05 08:08:00,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080441853] [2021-06-05 08:08:00,207 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-06-05 08:08:00,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:08:00,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-06-05 08:08:00,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=925, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 08:08:00,207 INFO L87 Difference]: Start difference. First operand 5753 states and 16288 transitions. Second operand has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:01,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:08:01,532 INFO L93 Difference]: Finished difference Result 7748 states and 21071 transitions. [2021-06-05 08:08:01,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-05 08:08:01,533 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-06-05 08:08:01,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:08:01,542 INFO L225 Difference]: With dead ends: 7748 [2021-06-05 08:08:01,542 INFO L226 Difference]: Without dead ends: 7478 [2021-06-05 08:08:01,543 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2658 ImplicationChecksByTransitivity, 1317.1ms TimeCoverageRelationStatistics Valid=2685, Invalid=6435, Unknown=0, NotChecked=0, Total=9120 [2021-06-05 08:08:01,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7478 states. [2021-06-05 08:08:01,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7478 to 5933. [2021-06-05 08:08:01,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5933 states, 5932 states have (on average 2.8400202292650034) internal successors, (16847), 5932 states have internal predecessors, (16847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:01,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5933 states to 5933 states and 16847 transitions. [2021-06-05 08:08:01,620 INFO L78 Accepts]: Start accepts. Automaton has 5933 states and 16847 transitions. Word has length 175 [2021-06-05 08:08:01,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:08:01,620 INFO L482 AbstractCegarLoop]: Abstraction has 5933 states and 16847 transitions. [2021-06-05 08:08:01,620 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:01,620 INFO L276 IsEmpty]: Start isEmpty. Operand 5933 states and 16847 transitions. [2021-06-05 08:08:01,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-06-05 08:08:01,625 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:08:01,625 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:08:01,833 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 432 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable436 [2021-06-05 08:08:01,833 INFO L430 AbstractCegarLoop]: === Iteration 438 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:08:01,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:08:01,833 INFO L82 PathProgramCache]: Analyzing trace with hash -2037980086, now seen corresponding path program 429 times [2021-06-05 08:08:01,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:08:01,833 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290734674] [2021-06-05 08:08:01,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:08:01,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:02,144 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:02,144 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:08:02,144 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290734674] [2021-06-05 08:08:02,144 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290734674] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:02,144 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238238492] [2021-06-05 08:08:02,144 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 433 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 433 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:02,230 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-06-05 08:08:02,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:08:02,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-05 08:08:02,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:08:02,428 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:02,428 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238238492] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:02,429 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:08:02,429 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-06-05 08:08:02,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739540409] [2021-06-05 08:08:02,429 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-06-05 08:08:02,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:08:02,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-06-05 08:08:02,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=925, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 08:08:02,429 INFO L87 Difference]: Start difference. First operand 5933 states and 16847 transitions. Second operand has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:04,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:08:04,083 INFO L93 Difference]: Finished difference Result 7210 states and 19721 transitions. [2021-06-05 08:08:04,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-05 08:08:04,084 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-06-05 08:08:04,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:08:04,092 INFO L225 Difference]: With dead ends: 7210 [2021-06-05 08:08:04,092 INFO L226 Difference]: Without dead ends: 6721 [2021-06-05 08:08:04,093 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2532 ImplicationChecksByTransitivity, 1503.7ms TimeCoverageRelationStatistics Valid=2422, Invalid=6890, Unknown=0, NotChecked=0, Total=9312 [2021-06-05 08:08:04,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6721 states. [2021-06-05 08:08:04,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6721 to 5878. [2021-06-05 08:08:04,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5878 states, 5877 states have (on average 2.8386932108218477) internal successors, (16683), 5877 states have internal predecessors, (16683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:04,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5878 states to 5878 states and 16683 transitions. [2021-06-05 08:08:04,169 INFO L78 Accepts]: Start accepts. Automaton has 5878 states and 16683 transitions. Word has length 175 [2021-06-05 08:08:04,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:08:04,169 INFO L482 AbstractCegarLoop]: Abstraction has 5878 states and 16683 transitions. [2021-06-05 08:08:04,169 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 5.057142857142857) internal successors, (177), 35 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:04,169 INFO L276 IsEmpty]: Start isEmpty. Operand 5878 states and 16683 transitions. [2021-06-05 08:08:04,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-06-05 08:08:04,174 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:08:04,174 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:08:04,382 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 433 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable437 [2021-06-05 08:08:04,383 INFO L430 AbstractCegarLoop]: === Iteration 439 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:08:04,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:08:04,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1789996418, now seen corresponding path program 430 times [2021-06-05 08:08:04,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:08:04,383 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114301532] [2021-06-05 08:08:04,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:08:04,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:04,878 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:04,878 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:08:04,878 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114301532] [2021-06-05 08:08:04,878 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114301532] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:04,878 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836682317] [2021-06-05 08:08:04,878 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 434 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 434 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:04,958 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:08:04,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:08:04,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 08:08:04,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:08:05,240 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:05,241 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836682317] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:05,241 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:08:05,241 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 39 [2021-06-05 08:08:05,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907395801] [2021-06-05 08:08:05,241 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 08:08:05,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:08:05,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 08:08:05,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=336, Invalid=1146, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 08:08:05,241 INFO L87 Difference]: Start difference. First operand 5878 states and 16683 transitions. Second operand has 39 states, 39 states have (on average 5.384615384615385) internal successors, (210), 39 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:06,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:08:06,021 INFO L93 Difference]: Finished difference Result 7268 states and 19783 transitions. [2021-06-05 08:08:06,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 08:08:06,022 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.384615384615385) internal successors, (210), 39 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-06-05 08:08:06,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:08:06,030 INFO L225 Difference]: With dead ends: 7268 [2021-06-05 08:08:06,030 INFO L226 Difference]: Without dead ends: 6934 [2021-06-05 08:08:06,031 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1146 ImplicationChecksByTransitivity, 1014.0ms TimeCoverageRelationStatistics Valid=1538, Invalid=4012, Unknown=0, NotChecked=0, Total=5550 [2021-06-05 08:08:06,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6934 states. [2021-06-05 08:08:06,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6934 to 5963. [2021-06-05 08:08:06,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5963 states, 5962 states have (on average 2.8267359946326738) internal successors, (16853), 5962 states have internal predecessors, (16853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:06,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5963 states to 5963 states and 16853 transitions. [2021-06-05 08:08:06,107 INFO L78 Accepts]: Start accepts. Automaton has 5963 states and 16853 transitions. Word has length 180 [2021-06-05 08:08:06,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:08:06,107 INFO L482 AbstractCegarLoop]: Abstraction has 5963 states and 16853 transitions. [2021-06-05 08:08:06,107 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 5.384615384615385) internal successors, (210), 39 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:06,108 INFO L276 IsEmpty]: Start isEmpty. Operand 5963 states and 16853 transitions. [2021-06-05 08:08:06,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-06-05 08:08:06,113 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:08:06,113 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:08:06,329 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable438,434 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:06,329 INFO L430 AbstractCegarLoop]: === Iteration 440 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:08:06,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:08:06,329 INFO L82 PathProgramCache]: Analyzing trace with hash 308357446, now seen corresponding path program 431 times [2021-06-05 08:08:06,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:08:06,329 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655110240] [2021-06-05 08:08:06,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:08:06,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:06,791 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:06,791 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:08:06,791 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655110240] [2021-06-05 08:08:06,791 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655110240] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:06,791 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231334056] [2021-06-05 08:08:06,791 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 435 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 435 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:06,887 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2021-06-05 08:08:06,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:08:06,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-05 08:08:06,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:08:07,193 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:07,193 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231334056] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:07,193 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:08:07,193 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2021-06-05 08:08:07,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435772463] [2021-06-05 08:08:07,193 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:08:07,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:08:07,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:08:07,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=965, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:08:07,194 INFO L87 Difference]: Start difference. First operand 5963 states and 16853 transitions. Second operand has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:07,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:08:07,955 INFO L93 Difference]: Finished difference Result 8561 states and 22177 transitions. [2021-06-05 08:08:07,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 08:08:07,955 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-06-05 08:08:07,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:08:07,965 INFO L225 Difference]: With dead ends: 8561 [2021-06-05 08:08:07,965 INFO L226 Difference]: Without dead ends: 8291 [2021-06-05 08:08:07,966 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 826 ImplicationChecksByTransitivity, 993.1ms TimeCoverageRelationStatistics Valid=1335, Invalid=3357, Unknown=0, NotChecked=0, Total=4692 [2021-06-05 08:08:07,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8291 states. [2021-06-05 08:08:08,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8291 to 5978. [2021-06-05 08:08:08,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5978 states, 5977 states have (on average 2.824661201271541) internal successors, (16883), 5977 states have internal predecessors, (16883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:08,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5978 states to 5978 states and 16883 transitions. [2021-06-05 08:08:08,067 INFO L78 Accepts]: Start accepts. Automaton has 5978 states and 16883 transitions. Word has length 180 [2021-06-05 08:08:08,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:08:08,068 INFO L482 AbstractCegarLoop]: Abstraction has 5978 states and 16883 transitions. [2021-06-05 08:08:08,068 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:08,068 INFO L276 IsEmpty]: Start isEmpty. Operand 5978 states and 16883 transitions. [2021-06-05 08:08:08,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-06-05 08:08:08,073 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:08:08,073 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:08:08,293 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 435 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable439 [2021-06-05 08:08:08,293 INFO L430 AbstractCegarLoop]: === Iteration 441 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:08:08,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:08:08,293 INFO L82 PathProgramCache]: Analyzing trace with hash -839634922, now seen corresponding path program 432 times [2021-06-05 08:08:08,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:08:08,293 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969264437] [2021-06-05 08:08:08,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:08:08,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:08,750 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:08,751 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:08:08,751 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969264437] [2021-06-05 08:08:08,751 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969264437] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:08,751 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955196886] [2021-06-05 08:08:08,751 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 436 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 436 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:08,856 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2021-06-05 08:08:08,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:08:08,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-05 08:08:08,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:08:09,098 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:09,099 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955196886] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:09,099 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:08:09,099 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2021-06-05 08:08:09,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502157052] [2021-06-05 08:08:09,099 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-06-05 08:08:09,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:08:09,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-06-05 08:08:09,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=1048, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 08:08:09,099 INFO L87 Difference]: Start difference. First operand 5978 states and 16883 transitions. Second operand has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:09,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:08:09,885 INFO L93 Difference]: Finished difference Result 8446 states and 21947 transitions. [2021-06-05 08:08:09,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 08:08:09,885 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-06-05 08:08:09,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:08:09,895 INFO L225 Difference]: With dead ends: 8446 [2021-06-05 08:08:09,896 INFO L226 Difference]: Without dead ends: 8176 [2021-06-05 08:08:09,896 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 936 ImplicationChecksByTransitivity, 1002.2ms TimeCoverageRelationStatistics Valid=1424, Invalid=3832, Unknown=0, NotChecked=0, Total=5256 [2021-06-05 08:08:09,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8176 states. [2021-06-05 08:08:09,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8176 to 5978. [2021-06-05 08:08:09,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5978 states, 5977 states have (on average 2.824661201271541) internal successors, (16883), 5977 states have internal predecessors, (16883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:09,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5978 states to 5978 states and 16883 transitions. [2021-06-05 08:08:09,979 INFO L78 Accepts]: Start accepts. Automaton has 5978 states and 16883 transitions. Word has length 180 [2021-06-05 08:08:09,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:08:09,979 INFO L482 AbstractCegarLoop]: Abstraction has 5978 states and 16883 transitions. [2021-06-05 08:08:09,980 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:09,980 INFO L276 IsEmpty]: Start isEmpty. Operand 5978 states and 16883 transitions. [2021-06-05 08:08:09,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-06-05 08:08:09,985 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:08:09,985 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:08:10,185 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable440,436 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:10,185 INFO L430 AbstractCegarLoop]: === Iteration 442 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:08:10,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:08:10,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1590602500, now seen corresponding path program 433 times [2021-06-05 08:08:10,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:08:10,186 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263825394] [2021-06-05 08:08:10,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:08:10,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:10,606 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:10,606 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:08:10,606 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263825394] [2021-06-05 08:08:10,606 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263825394] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:10,606 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899473234] [2021-06-05 08:08:10,606 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 437 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 437 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:10,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:10,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-05 08:08:10,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:08:10,920 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:10,920 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899473234] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:10,920 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:08:10,920 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2021-06-05 08:08:10,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857069171] [2021-06-05 08:08:10,921 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:08:10,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:08:10,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:08:10,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=992, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:08:10,921 INFO L87 Difference]: Start difference. First operand 5978 states and 16883 transitions. Second operand has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:11,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:08:11,753 INFO L93 Difference]: Finished difference Result 8421 states and 21897 transitions. [2021-06-05 08:08:11,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 08:08:11,753 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-06-05 08:08:11,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:08:11,761 INFO L225 Difference]: With dead ends: 8421 [2021-06-05 08:08:11,761 INFO L226 Difference]: Without dead ends: 8151 [2021-06-05 08:08:11,761 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 923 ImplicationChecksByTransitivity, 967.4ms TimeCoverageRelationStatistics Valid=1329, Invalid=3641, Unknown=0, NotChecked=0, Total=4970 [2021-06-05 08:08:11,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8151 states. [2021-06-05 08:08:11,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8151 to 5978. [2021-06-05 08:08:11,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5978 states, 5977 states have (on average 2.824661201271541) internal successors, (16883), 5977 states have internal predecessors, (16883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:11,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5978 states to 5978 states and 16883 transitions. [2021-06-05 08:08:11,836 INFO L78 Accepts]: Start accepts. Automaton has 5978 states and 16883 transitions. Word has length 180 [2021-06-05 08:08:11,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:08:11,836 INFO L482 AbstractCegarLoop]: Abstraction has 5978 states and 16883 transitions. [2021-06-05 08:08:11,836 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:11,836 INFO L276 IsEmpty]: Start isEmpty. Operand 5978 states and 16883 transitions. [2021-06-05 08:08:11,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-06-05 08:08:11,841 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:08:11,841 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:08:12,058 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 437 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable441 [2021-06-05 08:08:12,058 INFO L430 AbstractCegarLoop]: === Iteration 443 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:08:12,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:08:12,058 INFO L82 PathProgramCache]: Analyzing trace with hash -2006649388, now seen corresponding path program 434 times [2021-06-05 08:08:12,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:08:12,058 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160847261] [2021-06-05 08:08:12,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:08:12,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:12,502 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:12,502 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:08:12,502 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160847261] [2021-06-05 08:08:12,502 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160847261] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:12,502 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793452463] [2021-06-05 08:08:12,502 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 438 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 438 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:12,579 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:08:12,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:08:12,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-05 08:08:12,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:08:12,823 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:12,823 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793452463] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:12,824 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:08:12,824 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2021-06-05 08:08:12,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422335447] [2021-06-05 08:08:12,824 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-06-05 08:08:12,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:08:12,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-06-05 08:08:12,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=1074, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 08:08:12,824 INFO L87 Difference]: Start difference. First operand 5978 states and 16883 transitions. Second operand has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:13,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:08:13,664 INFO L93 Difference]: Finished difference Result 8371 states and 21797 transitions. [2021-06-05 08:08:13,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 08:08:13,665 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-06-05 08:08:13,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:08:13,674 INFO L225 Difference]: With dead ends: 8371 [2021-06-05 08:08:13,675 INFO L226 Difference]: Without dead ends: 8101 [2021-06-05 08:08:13,675 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1039 ImplicationChecksByTransitivity, 1046.3ms TimeCoverageRelationStatistics Valid=1426, Invalid=4124, Unknown=0, NotChecked=0, Total=5550 [2021-06-05 08:08:13,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8101 states. [2021-06-05 08:08:13,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8101 to 5978. [2021-06-05 08:08:13,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5978 states, 5977 states have (on average 2.824661201271541) internal successors, (16883), 5977 states have internal predecessors, (16883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:13,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5978 states to 5978 states and 16883 transitions. [2021-06-05 08:08:13,754 INFO L78 Accepts]: Start accepts. Automaton has 5978 states and 16883 transitions. Word has length 180 [2021-06-05 08:08:13,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:08:13,754 INFO L482 AbstractCegarLoop]: Abstraction has 5978 states and 16883 transitions. [2021-06-05 08:08:13,754 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:13,754 INFO L276 IsEmpty]: Start isEmpty. Operand 5978 states and 16883 transitions. [2021-06-05 08:08:13,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-06-05 08:08:13,759 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:08:13,759 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:08:13,960 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 438 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable442 [2021-06-05 08:08:13,960 INFO L430 AbstractCegarLoop]: === Iteration 444 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:08:13,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:08:13,960 INFO L82 PathProgramCache]: Analyzing trace with hash 568435266, now seen corresponding path program 435 times [2021-06-05 08:08:13,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:08:13,960 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159450994] [2021-06-05 08:08:13,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:08:13,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:14,393 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:14,394 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:08:14,394 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159450994] [2021-06-05 08:08:14,394 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159450994] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:14,394 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280279489] [2021-06-05 08:08:14,394 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 439 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 439 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:14,487 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-06-05 08:08:14,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:08:14,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-05 08:08:14,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:08:14,710 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:14,711 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280279489] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:14,711 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:08:14,711 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2021-06-05 08:08:14,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206165628] [2021-06-05 08:08:14,711 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:08:14,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:08:14,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:08:14,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=1015, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:08:14,711 INFO L87 Difference]: Start difference. First operand 5978 states and 16883 transitions. Second operand has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:15,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:08:15,561 INFO L93 Difference]: Finished difference Result 8321 states and 21697 transitions. [2021-06-05 08:08:15,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 08:08:15,561 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-06-05 08:08:15,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:08:15,570 INFO L225 Difference]: With dead ends: 8321 [2021-06-05 08:08:15,570 INFO L226 Difference]: Without dead ends: 8051 [2021-06-05 08:08:15,571 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1024 ImplicationChecksByTransitivity, 1017.9ms TimeCoverageRelationStatistics Valid=1339, Invalid=3917, Unknown=0, NotChecked=0, Total=5256 [2021-06-05 08:08:15,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8051 states. [2021-06-05 08:08:15,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8051 to 5978. [2021-06-05 08:08:15,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5978 states, 5977 states have (on average 2.824661201271541) internal successors, (16883), 5977 states have internal predecessors, (16883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:15,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5978 states to 5978 states and 16883 transitions. [2021-06-05 08:08:15,648 INFO L78 Accepts]: Start accepts. Automaton has 5978 states and 16883 transitions. Word has length 180 [2021-06-05 08:08:15,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:08:15,648 INFO L482 AbstractCegarLoop]: Abstraction has 5978 states and 16883 transitions. [2021-06-05 08:08:15,648 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:15,648 INFO L276 IsEmpty]: Start isEmpty. Operand 5978 states and 16883 transitions. [2021-06-05 08:08:15,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-06-05 08:08:15,653 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:08:15,653 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:08:15,865 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 439 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable443 [2021-06-05 08:08:15,865 INFO L430 AbstractCegarLoop]: === Iteration 445 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:08:15,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:08:15,865 INFO L82 PathProgramCache]: Analyzing trace with hash 67121426, now seen corresponding path program 436 times [2021-06-05 08:08:15,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:08:15,865 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723669157] [2021-06-05 08:08:15,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:08:15,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:16,330 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:16,330 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:08:16,331 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723669157] [2021-06-05 08:08:16,331 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723669157] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:16,331 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951181616] [2021-06-05 08:08:16,331 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 440 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 440 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:16,412 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:08:16,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:08:16,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-05 08:08:16,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:08:16,680 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:16,680 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951181616] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:16,680 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:08:16,680 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2021-06-05 08:08:16,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479481864] [2021-06-05 08:08:16,680 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-06-05 08:08:16,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:08:16,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-06-05 08:08:16,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=1096, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 08:08:16,681 INFO L87 Difference]: Start difference. First operand 5978 states and 16883 transitions. Second operand has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:17,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:08:17,635 INFO L93 Difference]: Finished difference Result 8271 states and 21597 transitions. [2021-06-05 08:08:17,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 08:08:17,635 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-06-05 08:08:17,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:08:17,645 INFO L225 Difference]: With dead ends: 8271 [2021-06-05 08:08:17,646 INFO L226 Difference]: Without dead ends: 8001 [2021-06-05 08:08:17,646 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1147 ImplicationChecksByTransitivity, 1093.5ms TimeCoverageRelationStatistics Valid=1444, Invalid=4408, Unknown=0, NotChecked=0, Total=5852 [2021-06-05 08:08:17,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8001 states. [2021-06-05 08:08:17,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8001 to 5978. [2021-06-05 08:08:17,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5978 states, 5977 states have (on average 2.824661201271541) internal successors, (16883), 5977 states have internal predecessors, (16883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:17,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5978 states to 5978 states and 16883 transitions. [2021-06-05 08:08:17,724 INFO L78 Accepts]: Start accepts. Automaton has 5978 states and 16883 transitions. Word has length 180 [2021-06-05 08:08:17,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:08:17,724 INFO L482 AbstractCegarLoop]: Abstraction has 5978 states and 16883 transitions. [2021-06-05 08:08:17,724 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:17,724 INFO L276 IsEmpty]: Start isEmpty. Operand 5978 states and 16883 transitions. [2021-06-05 08:08:17,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-06-05 08:08:17,729 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:08:17,729 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:08:17,946 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 440 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable444 [2021-06-05 08:08:17,946 INFO L430 AbstractCegarLoop]: === Iteration 446 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:08:17,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:08:17,946 INFO L82 PathProgramCache]: Analyzing trace with hash 543616768, now seen corresponding path program 437 times [2021-06-05 08:08:17,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:08:17,947 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705392696] [2021-06-05 08:08:17,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:08:17,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:18,337 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:18,337 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:08:18,337 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705392696] [2021-06-05 08:08:18,337 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705392696] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:18,337 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817160281] [2021-06-05 08:08:18,337 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 441 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 441 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:18,423 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2021-06-05 08:08:18,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:08:18,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-05 08:08:18,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:08:18,642 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:18,642 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817160281] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:18,642 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:08:18,642 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2021-06-05 08:08:18,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350773332] [2021-06-05 08:08:18,643 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:08:18,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:08:18,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:08:18,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=1034, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:08:18,643 INFO L87 Difference]: Start difference. First operand 5978 states and 16883 transitions. Second operand has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:19,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:08:19,492 INFO L93 Difference]: Finished difference Result 8221 states and 21497 transitions. [2021-06-05 08:08:19,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 08:08:19,493 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-06-05 08:08:19,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:08:19,502 INFO L225 Difference]: With dead ends: 8221 [2021-06-05 08:08:19,502 INFO L226 Difference]: Without dead ends: 7951 [2021-06-05 08:08:19,503 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1129 ImplicationChecksByTransitivity, 987.6ms TimeCoverageRelationStatistics Valid=1365, Invalid=4185, Unknown=0, NotChecked=0, Total=5550 [2021-06-05 08:08:19,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7951 states. [2021-06-05 08:08:19,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7951 to 5978. [2021-06-05 08:08:19,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5978 states, 5977 states have (on average 2.824661201271541) internal successors, (16883), 5977 states have internal predecessors, (16883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:19,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5978 states to 5978 states and 16883 transitions. [2021-06-05 08:08:19,581 INFO L78 Accepts]: Start accepts. Automaton has 5978 states and 16883 transitions. Word has length 180 [2021-06-05 08:08:19,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:08:19,582 INFO L482 AbstractCegarLoop]: Abstraction has 5978 states and 16883 transitions. [2021-06-05 08:08:19,582 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:19,582 INFO L276 IsEmpty]: Start isEmpty. Operand 5978 states and 16883 transitions. [2021-06-05 08:08:19,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-06-05 08:08:19,587 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:08:19,587 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:08:19,787 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 441 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable445 [2021-06-05 08:08:19,788 INFO L430 AbstractCegarLoop]: === Iteration 447 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:08:19,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:08:19,788 INFO L82 PathProgramCache]: Analyzing trace with hash 2010300880, now seen corresponding path program 438 times [2021-06-05 08:08:19,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:08:19,788 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232721435] [2021-06-05 08:08:19,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:08:19,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:20,196 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:20,197 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:08:20,197 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232721435] [2021-06-05 08:08:20,197 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232721435] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:20,197 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898806711] [2021-06-05 08:08:20,197 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 442 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 442 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:20,289 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2021-06-05 08:08:20,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:08:20,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-05 08:08:20,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:08:20,563 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:20,563 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898806711] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:20,563 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:08:20,563 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2021-06-05 08:08:20,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328660283] [2021-06-05 08:08:20,563 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-06-05 08:08:20,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:08:20,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-06-05 08:08:20,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=1114, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 08:08:20,564 INFO L87 Difference]: Start difference. First operand 5978 states and 16883 transitions. Second operand has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:21,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:08:21,575 INFO L93 Difference]: Finished difference Result 8171 states and 21397 transitions. [2021-06-05 08:08:21,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-05 08:08:21,575 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-06-05 08:08:21,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:08:21,585 INFO L225 Difference]: With dead ends: 8171 [2021-06-05 08:08:21,585 INFO L226 Difference]: Without dead ends: 7901 [2021-06-05 08:08:21,585 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1259 ImplicationChecksByTransitivity, 1164.6ms TimeCoverageRelationStatistics Valid=1478, Invalid=4684, Unknown=0, NotChecked=0, Total=6162 [2021-06-05 08:08:21,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7901 states. [2021-06-05 08:08:21,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7901 to 5978. [2021-06-05 08:08:21,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5978 states, 5977 states have (on average 2.824661201271541) internal successors, (16883), 5977 states have internal predecessors, (16883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:21,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5978 states to 5978 states and 16883 transitions. [2021-06-05 08:08:21,662 INFO L78 Accepts]: Start accepts. Automaton has 5978 states and 16883 transitions. Word has length 180 [2021-06-05 08:08:21,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:08:21,663 INFO L482 AbstractCegarLoop]: Abstraction has 5978 states and 16883 transitions. [2021-06-05 08:08:21,663 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:21,663 INFO L276 IsEmpty]: Start isEmpty. Operand 5978 states and 16883 transitions. [2021-06-05 08:08:21,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-06-05 08:08:21,668 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:08:21,668 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:08:21,877 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable446,442 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:21,877 INFO L430 AbstractCegarLoop]: === Iteration 448 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:08:21,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:08:21,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1875079486, now seen corresponding path program 439 times [2021-06-05 08:08:21,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:08:21,877 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482881650] [2021-06-05 08:08:21,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:08:21,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:22,253 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:22,253 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:08:22,253 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482881650] [2021-06-05 08:08:22,253 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482881650] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:22,253 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324908698] [2021-06-05 08:08:22,254 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 443 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 443 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:22,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:22,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-05 08:08:22,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:08:22,668 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:22,668 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324908698] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:22,668 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:08:22,668 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2021-06-05 08:08:22,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743945373] [2021-06-05 08:08:22,668 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:08:22,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:08:22,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:08:22,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=1049, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:08:22,669 INFO L87 Difference]: Start difference. First operand 5978 states and 16883 transitions. Second operand has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:23,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:08:23,549 INFO L93 Difference]: Finished difference Result 8121 states and 21297 transitions. [2021-06-05 08:08:23,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 08:08:23,549 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-06-05 08:08:23,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:08:23,558 INFO L225 Difference]: With dead ends: 8121 [2021-06-05 08:08:23,559 INFO L226 Difference]: Without dead ends: 7851 [2021-06-05 08:08:23,559 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1238 ImplicationChecksByTransitivity, 999.5ms TimeCoverageRelationStatistics Valid=1407, Invalid=4445, Unknown=0, NotChecked=0, Total=5852 [2021-06-05 08:08:23,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7851 states. [2021-06-05 08:08:23,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7851 to 5978. [2021-06-05 08:08:23,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5978 states, 5977 states have (on average 2.824661201271541) internal successors, (16883), 5977 states have internal predecessors, (16883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:23,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5978 states to 5978 states and 16883 transitions. [2021-06-05 08:08:23,636 INFO L78 Accepts]: Start accepts. Automaton has 5978 states and 16883 transitions. Word has length 180 [2021-06-05 08:08:23,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:08:23,636 INFO L482 AbstractCegarLoop]: Abstraction has 5978 states and 16883 transitions. [2021-06-05 08:08:23,636 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:23,637 INFO L276 IsEmpty]: Start isEmpty. Operand 5978 states and 16883 transitions. [2021-06-05 08:08:23,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-06-05 08:08:23,642 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:08:23,642 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:08:23,858 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 443 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable447 [2021-06-05 08:08:23,858 INFO L430 AbstractCegarLoop]: === Iteration 449 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:08:23,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:08:23,858 INFO L82 PathProgramCache]: Analyzing trace with hash 998344718, now seen corresponding path program 440 times [2021-06-05 08:08:23,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:08:23,858 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261829601] [2021-06-05 08:08:23,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:08:23,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:24,255 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:24,255 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:08:24,256 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261829601] [2021-06-05 08:08:24,256 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261829601] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:24,256 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759454686] [2021-06-05 08:08:24,256 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 444 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 444 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:24,330 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:08:24,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:08:24,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-05 08:08:24,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:08:24,575 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:24,575 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759454686] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:24,575 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:08:24,576 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2021-06-05 08:08:24,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550276045] [2021-06-05 08:08:24,576 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-06-05 08:08:24,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:08:24,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-06-05 08:08:24,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=1128, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 08:08:24,576 INFO L87 Difference]: Start difference. First operand 5978 states and 16883 transitions. Second operand has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:25,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:08:25,665 INFO L93 Difference]: Finished difference Result 8071 states and 21197 transitions. [2021-06-05 08:08:25,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 08:08:25,665 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-06-05 08:08:25,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:08:25,675 INFO L225 Difference]: With dead ends: 8071 [2021-06-05 08:08:25,675 INFO L226 Difference]: Without dead ends: 7801 [2021-06-05 08:08:25,675 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1375 ImplicationChecksByTransitivity, 1208.7ms TimeCoverageRelationStatistics Valid=1528, Invalid=4952, Unknown=0, NotChecked=0, Total=6480 [2021-06-05 08:08:25,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7801 states. [2021-06-05 08:08:25,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7801 to 5978. [2021-06-05 08:08:25,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5978 states, 5977 states have (on average 2.824661201271541) internal successors, (16883), 5977 states have internal predecessors, (16883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:25,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5978 states to 5978 states and 16883 transitions. [2021-06-05 08:08:25,750 INFO L78 Accepts]: Start accepts. Automaton has 5978 states and 16883 transitions. Word has length 180 [2021-06-05 08:08:25,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:08:25,750 INFO L482 AbstractCegarLoop]: Abstraction has 5978 states and 16883 transitions. [2021-06-05 08:08:25,751 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:25,751 INFO L276 IsEmpty]: Start isEmpty. Operand 5978 states and 16883 transitions. [2021-06-05 08:08:25,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-06-05 08:08:25,756 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:08:25,756 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:08:25,970 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 444 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable448 [2021-06-05 08:08:25,971 INFO L430 AbstractCegarLoop]: === Iteration 450 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:08:25,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:08:25,971 INFO L82 PathProgramCache]: Analyzing trace with hash -738981636, now seen corresponding path program 441 times [2021-06-05 08:08:25,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:08:25,971 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92375639] [2021-06-05 08:08:25,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:08:25,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:26,393 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:26,393 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:08:26,393 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92375639] [2021-06-05 08:08:26,393 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92375639] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:26,393 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766498120] [2021-06-05 08:08:26,393 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 445 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 445 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:26,489 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-06-05 08:08:26,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:08:26,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 55 conjunts are in the unsatisfiable core [2021-06-05 08:08:26,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:08:26,744 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:26,744 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766498120] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:26,744 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:08:26,744 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2021-06-05 08:08:26,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413201738] [2021-06-05 08:08:26,744 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:08:26,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:08:26,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:08:26,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=1060, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:08:26,745 INFO L87 Difference]: Start difference. First operand 5978 states and 16883 transitions. Second operand has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:27,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:08:27,652 INFO L93 Difference]: Finished difference Result 8021 states and 21097 transitions. [2021-06-05 08:08:27,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 08:08:27,652 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-06-05 08:08:27,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:08:27,661 INFO L225 Difference]: With dead ends: 8021 [2021-06-05 08:08:27,662 INFO L226 Difference]: Without dead ends: 7751 [2021-06-05 08:08:27,662 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1351 ImplicationChecksByTransitivity, 1008.1ms TimeCoverageRelationStatistics Valid=1465, Invalid=4697, Unknown=0, NotChecked=0, Total=6162 [2021-06-05 08:08:27,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7751 states. [2021-06-05 08:08:27,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7751 to 5978. [2021-06-05 08:08:27,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5978 states, 5977 states have (on average 2.824661201271541) internal successors, (16883), 5977 states have internal predecessors, (16883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:27,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5978 states to 5978 states and 16883 transitions. [2021-06-05 08:08:27,738 INFO L78 Accepts]: Start accepts. Automaton has 5978 states and 16883 transitions. Word has length 180 [2021-06-05 08:08:27,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:08:27,738 INFO L482 AbstractCegarLoop]: Abstraction has 5978 states and 16883 transitions. [2021-06-05 08:08:27,738 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:27,738 INFO L276 IsEmpty]: Start isEmpty. Operand 5978 states and 16883 transitions. [2021-06-05 08:08:27,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-06-05 08:08:27,743 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:08:27,743 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:08:27,953 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 445 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable449 [2021-06-05 08:08:27,953 INFO L430 AbstractCegarLoop]: === Iteration 451 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:08:27,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:08:27,953 INFO L82 PathProgramCache]: Analyzing trace with hash 625566668, now seen corresponding path program 442 times [2021-06-05 08:08:27,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:08:27,953 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732436924] [2021-06-05 08:08:27,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:08:27,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:28,333 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:28,334 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:08:28,334 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732436924] [2021-06-05 08:08:28,334 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732436924] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:28,334 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053470200] [2021-06-05 08:08:28,334 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 446 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 446 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:28,421 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:08:28,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:08:28,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-05 08:08:28,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:08:28,657 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:28,658 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053470200] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:28,658 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:08:28,658 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2021-06-05 08:08:28,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745227111] [2021-06-05 08:08:28,659 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-06-05 08:08:28,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:08:28,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-06-05 08:08:28,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=1138, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 08:08:28,660 INFO L87 Difference]: Start difference. First operand 5978 states and 16883 transitions. Second operand has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:29,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:08:29,929 INFO L93 Difference]: Finished difference Result 7971 states and 20997 transitions. [2021-06-05 08:08:29,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-06-05 08:08:29,929 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-06-05 08:08:29,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:08:29,937 INFO L225 Difference]: With dead ends: 7971 [2021-06-05 08:08:29,937 INFO L226 Difference]: Without dead ends: 7701 [2021-06-05 08:08:29,937 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1495 ImplicationChecksByTransitivity, 1318.2ms TimeCoverageRelationStatistics Valid=1594, Invalid=5212, Unknown=0, NotChecked=0, Total=6806 [2021-06-05 08:08:29,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7701 states. [2021-06-05 08:08:29,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7701 to 5978. [2021-06-05 08:08:29,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5978 states, 5977 states have (on average 2.824661201271541) internal successors, (16883), 5977 states have internal predecessors, (16883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:30,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5978 states to 5978 states and 16883 transitions. [2021-06-05 08:08:30,009 INFO L78 Accepts]: Start accepts. Automaton has 5978 states and 16883 transitions. Word has length 180 [2021-06-05 08:08:30,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:08:30,009 INFO L482 AbstractCegarLoop]: Abstraction has 5978 states and 16883 transitions. [2021-06-05 08:08:30,009 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:30,009 INFO L276 IsEmpty]: Start isEmpty. Operand 5978 states and 16883 transitions. [2021-06-05 08:08:30,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-06-05 08:08:30,014 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:08:30,014 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:08:30,229 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable450,446 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:30,229 INFO L430 AbstractCegarLoop]: === Iteration 452 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:08:30,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:08:30,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1651665350, now seen corresponding path program 443 times [2021-06-05 08:08:30,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:08:30,229 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878902721] [2021-06-05 08:08:30,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:08:30,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:30,576 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:30,576 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:08:30,576 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878902721] [2021-06-05 08:08:30,576 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878902721] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:30,576 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294696936] [2021-06-05 08:08:30,576 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 447 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 447 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:30,667 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2021-06-05 08:08:30,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:08:30,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-05 08:08:30,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:08:30,896 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:30,896 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294696936] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:30,897 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:08:30,897 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2021-06-05 08:08:30,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005354953] [2021-06-05 08:08:30,897 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:08:30,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:08:30,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:08:30,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=1067, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:08:30,897 INFO L87 Difference]: Start difference. First operand 5978 states and 16883 transitions. Second operand has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:31,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:08:31,875 INFO L93 Difference]: Finished difference Result 7921 states and 20897 transitions. [2021-06-05 08:08:31,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 08:08:31,876 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-06-05 08:08:31,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:08:31,885 INFO L225 Difference]: With dead ends: 7921 [2021-06-05 08:08:31,885 INFO L226 Difference]: Without dead ends: 7651 [2021-06-05 08:08:31,886 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1468 ImplicationChecksByTransitivity, 1050.5ms TimeCoverageRelationStatistics Valid=1539, Invalid=4941, Unknown=0, NotChecked=0, Total=6480 [2021-06-05 08:08:31,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7651 states. [2021-06-05 08:08:31,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7651 to 5978. [2021-06-05 08:08:31,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5978 states, 5977 states have (on average 2.824661201271541) internal successors, (16883), 5977 states have internal predecessors, (16883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:31,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5978 states to 5978 states and 16883 transitions. [2021-06-05 08:08:31,962 INFO L78 Accepts]: Start accepts. Automaton has 5978 states and 16883 transitions. Word has length 180 [2021-06-05 08:08:31,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:08:31,962 INFO L482 AbstractCegarLoop]: Abstraction has 5978 states and 16883 transitions. [2021-06-05 08:08:31,962 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:31,962 INFO L276 IsEmpty]: Start isEmpty. Operand 5978 states and 16883 transitions. [2021-06-05 08:08:31,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-06-05 08:08:31,967 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:08:31,967 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:08:32,184 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable451,447 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:32,184 INFO L430 AbstractCegarLoop]: === Iteration 453 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:08:32,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:08:32,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1744778506, now seen corresponding path program 444 times [2021-06-05 08:08:32,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:08:32,184 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983846856] [2021-06-05 08:08:32,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:08:32,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:32,546 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:32,546 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:08:32,546 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983846856] [2021-06-05 08:08:32,546 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983846856] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:32,546 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505079025] [2021-06-05 08:08:32,546 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 448 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 448 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:32,638 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2021-06-05 08:08:32,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:08:32,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-05 08:08:32,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:08:32,895 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:32,895 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505079025] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:32,895 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:08:32,895 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2021-06-05 08:08:32,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710921743] [2021-06-05 08:08:32,895 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-06-05 08:08:32,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:08:32,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-06-05 08:08:32,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1144, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 08:08:32,896 INFO L87 Difference]: Start difference. First operand 5978 states and 16883 transitions. Second operand has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:34,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:08:34,305 INFO L93 Difference]: Finished difference Result 7871 states and 20797 transitions. [2021-06-05 08:08:34,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-05 08:08:34,306 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-06-05 08:08:34,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:08:34,314 INFO L225 Difference]: With dead ends: 7871 [2021-06-05 08:08:34,314 INFO L226 Difference]: Without dead ends: 7601 [2021-06-05 08:08:34,315 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1619 ImplicationChecksByTransitivity, 1461.2ms TimeCoverageRelationStatistics Valid=1676, Invalid=5464, Unknown=0, NotChecked=0, Total=7140 [2021-06-05 08:08:34,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7601 states. [2021-06-05 08:08:34,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7601 to 5978. [2021-06-05 08:08:34,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5978 states, 5977 states have (on average 2.824661201271541) internal successors, (16883), 5977 states have internal predecessors, (16883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:34,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5978 states to 5978 states and 16883 transitions. [2021-06-05 08:08:34,390 INFO L78 Accepts]: Start accepts. Automaton has 5978 states and 16883 transitions. Word has length 180 [2021-06-05 08:08:34,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:08:34,391 INFO L482 AbstractCegarLoop]: Abstraction has 5978 states and 16883 transitions. [2021-06-05 08:08:34,391 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:34,391 INFO L276 IsEmpty]: Start isEmpty. Operand 5978 states and 16883 transitions. [2021-06-05 08:08:34,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-06-05 08:08:34,396 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:08:34,396 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:08:34,612 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 448 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable452 [2021-06-05 08:08:34,613 INFO L430 AbstractCegarLoop]: === Iteration 454 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:08:34,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:08:34,613 INFO L82 PathProgramCache]: Analyzing trace with hash 129825016, now seen corresponding path program 445 times [2021-06-05 08:08:34,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:08:34,613 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356169122] [2021-06-05 08:08:34,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:08:34,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:34,975 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:34,976 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:08:34,976 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356169122] [2021-06-05 08:08:34,976 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356169122] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:34,976 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329996432] [2021-06-05 08:08:34,976 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 449 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 449 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:35,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:35,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-05 08:08:35,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:08:35,290 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:35,290 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329996432] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:35,290 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:08:35,291 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2021-06-05 08:08:35,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917708298] [2021-06-05 08:08:35,291 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:08:35,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:08:35,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:08:35,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1070, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:08:35,291 INFO L87 Difference]: Start difference. First operand 5978 states and 16883 transitions. Second operand has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:36,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:08:36,385 INFO L93 Difference]: Finished difference Result 7821 states and 20697 transitions. [2021-06-05 08:08:36,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 08:08:36,386 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-06-05 08:08:36,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:08:36,395 INFO L225 Difference]: With dead ends: 7821 [2021-06-05 08:08:36,395 INFO L226 Difference]: Without dead ends: 7551 [2021-06-05 08:08:36,396 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1589 ImplicationChecksByTransitivity, 1136.7ms TimeCoverageRelationStatistics Valid=1629, Invalid=5177, Unknown=0, NotChecked=0, Total=6806 [2021-06-05 08:08:36,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7551 states. [2021-06-05 08:08:36,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7551 to 5978. [2021-06-05 08:08:36,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5978 states, 5977 states have (on average 2.824661201271541) internal successors, (16883), 5977 states have internal predecessors, (16883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:36,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5978 states to 5978 states and 16883 transitions. [2021-06-05 08:08:36,473 INFO L78 Accepts]: Start accepts. Automaton has 5978 states and 16883 transitions. Word has length 180 [2021-06-05 08:08:36,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:08:36,473 INFO L482 AbstractCegarLoop]: Abstraction has 5978 states and 16883 transitions. [2021-06-05 08:08:36,473 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:36,473 INFO L276 IsEmpty]: Start isEmpty. Operand 5978 states and 16883 transitions. [2021-06-05 08:08:36,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-06-05 08:08:36,478 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:08:36,478 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:08:36,693 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable453,449 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:36,693 INFO L430 AbstractCegarLoop]: === Iteration 455 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:08:36,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:08:36,694 INFO L82 PathProgramCache]: Analyzing trace with hash -250618936, now seen corresponding path program 446 times [2021-06-05 08:08:36,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:08:36,694 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734289516] [2021-06-05 08:08:36,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:08:36,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:37,063 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:37,063 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:08:37,063 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734289516] [2021-06-05 08:08:37,064 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734289516] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:37,064 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742184141] [2021-06-05 08:08:37,064 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 450 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 450 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:37,142 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:08:37,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:08:37,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-05 08:08:37,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:08:37,433 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:37,433 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742184141] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:37,433 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:08:37,433 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2021-06-05 08:08:37,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321405768] [2021-06-05 08:08:37,433 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-06-05 08:08:37,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:08:37,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-06-05 08:08:37,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1146, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 08:08:37,434 INFO L87 Difference]: Start difference. First operand 5978 states and 16883 transitions. Second operand has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:38,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:08:38,876 INFO L93 Difference]: Finished difference Result 7771 states and 20597 transitions. [2021-06-05 08:08:38,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-05 08:08:38,876 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-06-05 08:08:38,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:08:38,885 INFO L225 Difference]: With dead ends: 7771 [2021-06-05 08:08:38,886 INFO L226 Difference]: Without dead ends: 7501 [2021-06-05 08:08:38,886 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1747 ImplicationChecksByTransitivity, 1477.1ms TimeCoverageRelationStatistics Valid=1774, Invalid=5708, Unknown=0, NotChecked=0, Total=7482 [2021-06-05 08:08:38,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7501 states. [2021-06-05 08:08:38,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7501 to 5978. [2021-06-05 08:08:38,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5978 states, 5977 states have (on average 2.824661201271541) internal successors, (16883), 5977 states have internal predecessors, (16883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:38,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5978 states to 5978 states and 16883 transitions. [2021-06-05 08:08:38,963 INFO L78 Accepts]: Start accepts. Automaton has 5978 states and 16883 transitions. Word has length 180 [2021-06-05 08:08:38,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:08:38,963 INFO L482 AbstractCegarLoop]: Abstraction has 5978 states and 16883 transitions. [2021-06-05 08:08:38,964 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:38,964 INFO L276 IsEmpty]: Start isEmpty. Operand 5978 states and 16883 transitions. [2021-06-05 08:08:38,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-06-05 08:08:38,969 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:08:38,969 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:08:39,169 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable454,450 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:39,170 INFO L430 AbstractCegarLoop]: === Iteration 456 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:08:39,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:08:39,170 INFO L82 PathProgramCache]: Analyzing trace with hash 373756214, now seen corresponding path program 447 times [2021-06-05 08:08:39,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:08:39,170 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724733976] [2021-06-05 08:08:39,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:08:39,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:39,518 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:39,518 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:08:39,518 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724733976] [2021-06-05 08:08:39,518 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724733976] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:39,518 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632080542] [2021-06-05 08:08:39,518 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 451 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 451 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:39,611 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-06-05 08:08:39,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:08:39,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 49 conjunts are in the unsatisfiable core [2021-06-05 08:08:39,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:08:39,821 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:39,821 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632080542] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:39,821 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:08:39,821 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2021-06-05 08:08:39,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520860840] [2021-06-05 08:08:39,822 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:08:39,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:08:39,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:08:39,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1069, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:08:39,822 INFO L87 Difference]: Start difference. First operand 5978 states and 16883 transitions. Second operand has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:40,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:08:40,987 INFO L93 Difference]: Finished difference Result 7721 states and 20497 transitions. [2021-06-05 08:08:40,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 08:08:40,988 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-06-05 08:08:40,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:08:40,997 INFO L225 Difference]: With dead ends: 7721 [2021-06-05 08:08:40,997 INFO L226 Difference]: Without dead ends: 7451 [2021-06-05 08:08:40,998 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1714 ImplicationChecksByTransitivity, 1165.6ms TimeCoverageRelationStatistics Valid=1735, Invalid=5405, Unknown=0, NotChecked=0, Total=7140 [2021-06-05 08:08:41,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7451 states. [2021-06-05 08:08:41,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7451 to 5978. [2021-06-05 08:08:41,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5978 states, 5977 states have (on average 2.824661201271541) internal successors, (16883), 5977 states have internal predecessors, (16883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:41,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5978 states to 5978 states and 16883 transitions. [2021-06-05 08:08:41,111 INFO L78 Accepts]: Start accepts. Automaton has 5978 states and 16883 transitions. Word has length 180 [2021-06-05 08:08:41,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:08:41,111 INFO L482 AbstractCegarLoop]: Abstraction has 5978 states and 16883 transitions. [2021-06-05 08:08:41,111 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:41,111 INFO L276 IsEmpty]: Start isEmpty. Operand 5978 states and 16883 transitions. [2021-06-05 08:08:41,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-06-05 08:08:41,117 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:08:41,117 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:08:41,333 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 451 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable455 [2021-06-05 08:08:41,333 INFO L430 AbstractCegarLoop]: === Iteration 457 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:08:41,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:08:41,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1182808070, now seen corresponding path program 448 times [2021-06-05 08:08:41,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:08:41,334 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145121703] [2021-06-05 08:08:41,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:08:41,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:41,690 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:41,691 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:08:41,691 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145121703] [2021-06-05 08:08:41,691 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145121703] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:41,691 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568059314] [2021-06-05 08:08:41,691 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 452 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 452 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:41,771 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:08:41,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:08:41,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-05 08:08:41,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:08:42,001 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:42,002 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568059314] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:42,002 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:08:42,002 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2021-06-05 08:08:42,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964600749] [2021-06-05 08:08:42,002 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-06-05 08:08:42,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:08:42,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-06-05 08:08:42,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1144, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 08:08:42,003 INFO L87 Difference]: Start difference. First operand 5978 states and 16883 transitions. Second operand has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:43,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:08:43,411 INFO L93 Difference]: Finished difference Result 7671 states and 20397 transitions. [2021-06-05 08:08:43,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-06-05 08:08:43,411 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-06-05 08:08:43,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:08:43,420 INFO L225 Difference]: With dead ends: 7671 [2021-06-05 08:08:43,420 INFO L226 Difference]: Without dead ends: 7401 [2021-06-05 08:08:43,421 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1879 ImplicationChecksByTransitivity, 1395.9ms TimeCoverageRelationStatistics Valid=1888, Invalid=5944, Unknown=0, NotChecked=0, Total=7832 [2021-06-05 08:08:43,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7401 states. [2021-06-05 08:08:43,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7401 to 5978. [2021-06-05 08:08:43,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5978 states, 5977 states have (on average 2.824661201271541) internal successors, (16883), 5977 states have internal predecessors, (16883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:43,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5978 states to 5978 states and 16883 transitions. [2021-06-05 08:08:43,499 INFO L78 Accepts]: Start accepts. Automaton has 5978 states and 16883 transitions. Word has length 180 [2021-06-05 08:08:43,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:08:43,499 INFO L482 AbstractCegarLoop]: Abstraction has 5978 states and 16883 transitions. [2021-06-05 08:08:43,499 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:43,500 INFO L276 IsEmpty]: Start isEmpty. Operand 5978 states and 16883 transitions. [2021-06-05 08:08:43,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-06-05 08:08:43,505 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:08:43,505 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:08:43,713 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 452 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable456 [2021-06-05 08:08:43,713 INFO L430 AbstractCegarLoop]: === Iteration 458 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:08:43,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:08:43,713 INFO L82 PathProgramCache]: Analyzing trace with hash -209142028, now seen corresponding path program 449 times [2021-06-05 08:08:43,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:08:43,713 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942484548] [2021-06-05 08:08:43,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:08:43,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:44,066 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:44,067 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:08:44,067 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942484548] [2021-06-05 08:08:44,067 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942484548] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:44,067 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600544560] [2021-06-05 08:08:44,067 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 453 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 453 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:44,147 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2021-06-05 08:08:44,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:08:44,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-05 08:08:44,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:08:44,356 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:44,356 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600544560] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:44,356 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:08:44,356 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2021-06-05 08:08:44,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616691691] [2021-06-05 08:08:44,357 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:08:44,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:08:44,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:08:44,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=1064, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:08:44,357 INFO L87 Difference]: Start difference. First operand 5978 states and 16883 transitions. Second operand has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:45,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:08:45,588 INFO L93 Difference]: Finished difference Result 7621 states and 20297 transitions. [2021-06-05 08:08:45,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-05 08:08:45,588 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-06-05 08:08:45,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:08:45,597 INFO L225 Difference]: With dead ends: 7621 [2021-06-05 08:08:45,597 INFO L226 Difference]: Without dead ends: 7351 [2021-06-05 08:08:45,598 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1843 ImplicationChecksByTransitivity, 1225.6ms TimeCoverageRelationStatistics Valid=1857, Invalid=5625, Unknown=0, NotChecked=0, Total=7482 [2021-06-05 08:08:45,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7351 states. [2021-06-05 08:08:45,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7351 to 5978. [2021-06-05 08:08:45,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5978 states, 5977 states have (on average 2.824661201271541) internal successors, (16883), 5977 states have internal predecessors, (16883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:45,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5978 states to 5978 states and 16883 transitions. [2021-06-05 08:08:45,672 INFO L78 Accepts]: Start accepts. Automaton has 5978 states and 16883 transitions. Word has length 180 [2021-06-05 08:08:45,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:08:45,672 INFO L482 AbstractCegarLoop]: Abstraction has 5978 states and 16883 transitions. [2021-06-05 08:08:45,672 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:45,672 INFO L276 IsEmpty]: Start isEmpty. Operand 5978 states and 16883 transitions. [2021-06-05 08:08:45,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-06-05 08:08:45,678 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:08:45,678 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:08:45,886 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable457,453 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:45,886 INFO L430 AbstractCegarLoop]: === Iteration 459 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:08:45,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:08:45,886 INFO L82 PathProgramCache]: Analyzing trace with hash -454219324, now seen corresponding path program 450 times [2021-06-05 08:08:45,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:08:45,886 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255114987] [2021-06-05 08:08:45,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:08:45,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:46,239 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:46,239 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:08:46,239 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255114987] [2021-06-05 08:08:46,239 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255114987] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:46,239 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435320521] [2021-06-05 08:08:46,239 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 454 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 454 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:46,331 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2021-06-05 08:08:46,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:08:46,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 47 conjunts are in the unsatisfiable core [2021-06-05 08:08:46,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:08:46,558 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:46,559 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435320521] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:46,559 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:08:46,559 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2021-06-05 08:08:46,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310935221] [2021-06-05 08:08:46,559 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-06-05 08:08:46,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:08:46,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-06-05 08:08:46,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=1138, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 08:08:46,559 INFO L87 Difference]: Start difference. First operand 5978 states and 16883 transitions. Second operand has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:47,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:08:47,982 INFO L93 Difference]: Finished difference Result 7571 states and 20197 transitions. [2021-06-05 08:08:47,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-06-05 08:08:47,983 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-06-05 08:08:47,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:08:47,992 INFO L225 Difference]: With dead ends: 7571 [2021-06-05 08:08:47,992 INFO L226 Difference]: Without dead ends: 7301 [2021-06-05 08:08:47,993 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1858 ImplicationChecksByTransitivity, 1377.5ms TimeCoverageRelationStatistics Valid=1780, Invalid=6052, Unknown=0, NotChecked=0, Total=7832 [2021-06-05 08:08:48,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7301 states. [2021-06-05 08:08:48,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7301 to 5978. [2021-06-05 08:08:48,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5978 states, 5977 states have (on average 2.824661201271541) internal successors, (16883), 5977 states have internal predecessors, (16883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:48,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5978 states to 5978 states and 16883 transitions. [2021-06-05 08:08:48,068 INFO L78 Accepts]: Start accepts. Automaton has 5978 states and 16883 transitions. Word has length 180 [2021-06-05 08:08:48,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:08:48,068 INFO L482 AbstractCegarLoop]: Abstraction has 5978 states and 16883 transitions. [2021-06-05 08:08:48,068 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:48,068 INFO L276 IsEmpty]: Start isEmpty. Operand 5978 states and 16883 transitions. [2021-06-05 08:08:48,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-06-05 08:08:48,073 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:08:48,073 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:08:48,287 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 454 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable458 [2021-06-05 08:08:48,288 INFO L430 AbstractCegarLoop]: === Iteration 460 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:08:48,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:08:48,288 INFO L82 PathProgramCache]: Analyzing trace with hash -831069646, now seen corresponding path program 451 times [2021-06-05 08:08:48,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:08:48,288 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607360690] [2021-06-05 08:08:48,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:08:48,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:48,691 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:48,692 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:08:48,692 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607360690] [2021-06-05 08:08:48,692 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607360690] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:48,692 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539149990] [2021-06-05 08:08:48,692 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 455 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 455 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:48,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:48,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-05 08:08:48,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:08:49,028 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:49,028 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539149990] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:49,028 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:08:49,028 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2021-06-05 08:08:49,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675343697] [2021-06-05 08:08:49,028 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:08:49,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:08:49,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:08:49,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=1055, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:08:49,029 INFO L87 Difference]: Start difference. First operand 5978 states and 16883 transitions. Second operand has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:50,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:08:50,433 INFO L93 Difference]: Finished difference Result 7521 states and 20097 transitions. [2021-06-05 08:08:50,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-05 08:08:50,433 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-06-05 08:08:50,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:08:50,443 INFO L225 Difference]: With dead ends: 7521 [2021-06-05 08:08:50,443 INFO L226 Difference]: Without dead ends: 7251 [2021-06-05 08:08:50,443 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1976 ImplicationChecksByTransitivity, 1374.5ms TimeCoverageRelationStatistics Valid=1995, Invalid=5837, Unknown=0, NotChecked=0, Total=7832 [2021-06-05 08:08:50,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7251 states. [2021-06-05 08:08:50,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7251 to 5978. [2021-06-05 08:08:50,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5978 states, 5977 states have (on average 2.824661201271541) internal successors, (16883), 5977 states have internal predecessors, (16883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:50,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5978 states to 5978 states and 16883 transitions. [2021-06-05 08:08:50,522 INFO L78 Accepts]: Start accepts. Automaton has 5978 states and 16883 transitions. Word has length 180 [2021-06-05 08:08:50,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:08:50,522 INFO L482 AbstractCegarLoop]: Abstraction has 5978 states and 16883 transitions. [2021-06-05 08:08:50,522 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:50,522 INFO L276 IsEmpty]: Start isEmpty. Operand 5978 states and 16883 transitions. [2021-06-05 08:08:50,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-06-05 08:08:50,527 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:08:50,527 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:08:50,728 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 455 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable459 [2021-06-05 08:08:50,728 INFO L430 AbstractCegarLoop]: === Iteration 461 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:08:50,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:08:50,728 INFO L82 PathProgramCache]: Analyzing trace with hash 495685890, now seen corresponding path program 452 times [2021-06-05 08:08:50,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:08:50,728 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754834970] [2021-06-05 08:08:50,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:08:50,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:51,308 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:51,308 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:08:51,308 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754834970] [2021-06-05 08:08:51,308 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754834970] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:51,309 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466208374] [2021-06-05 08:08:51,309 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 456 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 456 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:51,406 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:08:51,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:08:51,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-05 08:08:51,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:08:51,693 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:51,694 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466208374] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:51,694 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:08:51,694 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2021-06-05 08:08:51,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595117968] [2021-06-05 08:08:51,694 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-06-05 08:08:51,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:08:51,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-06-05 08:08:51,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=1128, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 08:08:51,694 INFO L87 Difference]: Start difference. First operand 5978 states and 16883 transitions. Second operand has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:53,092 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 10 [2021-06-05 08:08:53,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:08:53,604 INFO L93 Difference]: Finished difference Result 7471 states and 19997 transitions. [2021-06-05 08:08:53,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-06-05 08:08:53,604 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-06-05 08:08:53,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:08:53,611 INFO L225 Difference]: With dead ends: 7471 [2021-06-05 08:08:53,612 INFO L226 Difference]: Without dead ends: 7201 [2021-06-05 08:08:53,612 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2155 ImplicationChecksByTransitivity, 2104.9ms TimeCoverageRelationStatistics Valid=2164, Invalid=6392, Unknown=0, NotChecked=0, Total=8556 [2021-06-05 08:08:53,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7201 states. [2021-06-05 08:08:53,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7201 to 5978. [2021-06-05 08:08:53,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5978 states, 5977 states have (on average 2.824661201271541) internal successors, (16883), 5977 states have internal predecessors, (16883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:53,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5978 states to 5978 states and 16883 transitions. [2021-06-05 08:08:53,681 INFO L78 Accepts]: Start accepts. Automaton has 5978 states and 16883 transitions. Word has length 180 [2021-06-05 08:08:53,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:08:53,681 INFO L482 AbstractCegarLoop]: Abstraction has 5978 states and 16883 transitions. [2021-06-05 08:08:53,681 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:53,681 INFO L276 IsEmpty]: Start isEmpty. Operand 5978 states and 16883 transitions. [2021-06-05 08:08:53,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-06-05 08:08:53,686 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:08:53,686 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:08:53,892 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable460,456 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:53,892 INFO L430 AbstractCegarLoop]: === Iteration 462 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:08:53,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:08:53,892 INFO L82 PathProgramCache]: Analyzing trace with hash 949902064, now seen corresponding path program 453 times [2021-06-05 08:08:53,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:08:53,892 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184558526] [2021-06-05 08:08:53,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:08:53,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:54,327 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:54,327 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:08:54,327 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184558526] [2021-06-05 08:08:54,327 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184558526] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:54,327 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122784022] [2021-06-05 08:08:54,327 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 457 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 457 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:54,424 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-06-05 08:08:54,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:08:54,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 43 conjunts are in the unsatisfiable core [2021-06-05 08:08:54,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:08:54,628 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:54,628 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122784022] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:54,628 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:08:54,628 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2021-06-05 08:08:54,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213210197] [2021-06-05 08:08:54,630 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:08:54,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:08:54,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:08:54,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=1042, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:08:54,630 INFO L87 Difference]: Start difference. First operand 5978 states and 16883 transitions. Second operand has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:56,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:08:56,046 INFO L93 Difference]: Finished difference Result 7421 states and 19897 transitions. [2021-06-05 08:08:56,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-06-05 08:08:56,046 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-06-05 08:08:56,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:08:56,055 INFO L225 Difference]: With dead ends: 7421 [2021-06-05 08:08:56,055 INFO L226 Difference]: Without dead ends: 7151 [2021-06-05 08:08:56,056 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2113 ImplicationChecksByTransitivity, 1472.7ms TimeCoverageRelationStatistics Valid=2149, Invalid=6041, Unknown=0, NotChecked=0, Total=8190 [2021-06-05 08:08:56,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7151 states. [2021-06-05 08:08:56,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7151 to 5978. [2021-06-05 08:08:56,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5978 states, 5977 states have (on average 2.824661201271541) internal successors, (16883), 5977 states have internal predecessors, (16883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:56,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5978 states to 5978 states and 16883 transitions. [2021-06-05 08:08:56,132 INFO L78 Accepts]: Start accepts. Automaton has 5978 states and 16883 transitions. Word has length 180 [2021-06-05 08:08:56,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:08:56,133 INFO L482 AbstractCegarLoop]: Abstraction has 5978 states and 16883 transitions. [2021-06-05 08:08:56,133 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:56,133 INFO L276 IsEmpty]: Start isEmpty. Operand 5978 states and 16883 transitions. [2021-06-05 08:08:56,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-06-05 08:08:56,138 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:08:56,138 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:08:56,355 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 457 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable461 [2021-06-05 08:08:56,355 INFO L430 AbstractCegarLoop]: === Iteration 463 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:08:56,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:08:56,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1948798400, now seen corresponding path program 454 times [2021-06-05 08:08:56,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:08:56,355 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290758351] [2021-06-05 08:08:56,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:08:56,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:56,689 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:56,689 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:08:56,689 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290758351] [2021-06-05 08:08:56,689 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290758351] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:56,689 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534105758] [2021-06-05 08:08:56,689 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 458 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 458 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:56,776 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:08:56,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:08:56,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-05 08:08:56,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:08:57,055 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:57,055 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534105758] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:57,055 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:08:57,055 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2021-06-05 08:08:57,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980045309] [2021-06-05 08:08:57,055 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-06-05 08:08:57,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:08:57,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-06-05 08:08:57,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=1114, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 08:08:57,056 INFO L87 Difference]: Start difference. First operand 5978 states and 16883 transitions. Second operand has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:58,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:08:58,742 INFO L93 Difference]: Finished difference Result 7371 states and 19797 transitions. [2021-06-05 08:08:58,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-06-05 08:08:58,742 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-06-05 08:08:58,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:08:58,750 INFO L225 Difference]: With dead ends: 7371 [2021-06-05 08:08:58,751 INFO L226 Difference]: Without dead ends: 7101 [2021-06-05 08:08:58,751 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2299 ImplicationChecksByTransitivity, 1631.3ms TimeCoverageRelationStatistics Valid=2326, Invalid=6604, Unknown=0, NotChecked=0, Total=8930 [2021-06-05 08:08:58,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7101 states. [2021-06-05 08:08:58,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7101 to 5978. [2021-06-05 08:08:58,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5978 states, 5977 states have (on average 2.824661201271541) internal successors, (16883), 5977 states have internal predecessors, (16883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:58,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5978 states to 5978 states and 16883 transitions. [2021-06-05 08:08:58,827 INFO L78 Accepts]: Start accepts. Automaton has 5978 states and 16883 transitions. Word has length 180 [2021-06-05 08:08:58,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:08:58,827 INFO L482 AbstractCegarLoop]: Abstraction has 5978 states and 16883 transitions. [2021-06-05 08:08:58,827 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:08:58,827 INFO L276 IsEmpty]: Start isEmpty. Operand 5978 states and 16883 transitions. [2021-06-05 08:08:58,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-06-05 08:08:58,833 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:08:58,833 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:08:59,049 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable462,458 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:59,049 INFO L430 AbstractCegarLoop]: === Iteration 464 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:08:59,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:08:59,049 INFO L82 PathProgramCache]: Analyzing trace with hash 69470510, now seen corresponding path program 455 times [2021-06-05 08:08:59,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:08:59,049 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038351934] [2021-06-05 08:08:59,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:08:59,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:08:59,431 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:59,431 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:08:59,432 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038351934] [2021-06-05 08:08:59,432 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038351934] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:59,432 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752341367] [2021-06-05 08:08:59,432 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 459 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 459 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:08:59,512 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2021-06-05 08:08:59,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:08:59,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-05 08:08:59,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:08:59,718 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:08:59,719 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752341367] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:08:59,719 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:08:59,719 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2021-06-05 08:08:59,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794566502] [2021-06-05 08:08:59,719 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:08:59,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:08:59,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:08:59,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=1025, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:08:59,719 INFO L87 Difference]: Start difference. First operand 5978 states and 16883 transitions. Second operand has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:01,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:09:01,016 INFO L93 Difference]: Finished difference Result 7321 states and 19697 transitions. [2021-06-05 08:09:01,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-05 08:09:01,016 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-06-05 08:09:01,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:09:01,023 INFO L225 Difference]: With dead ends: 7321 [2021-06-05 08:09:01,023 INFO L226 Difference]: Without dead ends: 7051 [2021-06-05 08:09:01,024 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2254 ImplicationChecksByTransitivity, 1329.3ms TimeCoverageRelationStatistics Valid=2319, Invalid=6237, Unknown=0, NotChecked=0, Total=8556 [2021-06-05 08:09:01,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7051 states. [2021-06-05 08:09:01,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7051 to 5978. [2021-06-05 08:09:01,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5978 states, 5977 states have (on average 2.824661201271541) internal successors, (16883), 5977 states have internal predecessors, (16883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:01,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5978 states to 5978 states and 16883 transitions. [2021-06-05 08:09:01,091 INFO L78 Accepts]: Start accepts. Automaton has 5978 states and 16883 transitions. Word has length 180 [2021-06-05 08:09:01,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:09:01,091 INFO L482 AbstractCegarLoop]: Abstraction has 5978 states and 16883 transitions. [2021-06-05 08:09:01,092 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:01,092 INFO L276 IsEmpty]: Start isEmpty. Operand 5978 states and 16883 transitions. [2021-06-05 08:09:01,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-06-05 08:09:01,097 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:09:01,097 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:09:01,313 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable463,459 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:01,313 INFO L430 AbstractCegarLoop]: === Iteration 465 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:09:01,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:09:01,313 INFO L82 PathProgramCache]: Analyzing trace with hash 2099789822, now seen corresponding path program 456 times [2021-06-05 08:09:01,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:09:01,313 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187320086] [2021-06-05 08:09:01,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:09:01,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:01,748 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:01,748 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:09:01,748 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187320086] [2021-06-05 08:09:01,748 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187320086] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:01,748 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543412347] [2021-06-05 08:09:01,748 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 460 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 460 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:01,848 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2021-06-05 08:09:01,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:09:01,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 41 conjunts are in the unsatisfiable core [2021-06-05 08:09:01,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:09:02,083 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:02,083 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543412347] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:02,083 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:09:02,083 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2021-06-05 08:09:02,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920428204] [2021-06-05 08:09:02,084 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-06-05 08:09:02,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:09:02,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-06-05 08:09:02,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=1096, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 08:09:02,084 INFO L87 Difference]: Start difference. First operand 5978 states and 16883 transitions. Second operand has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:03,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:09:03,734 INFO L93 Difference]: Finished difference Result 7271 states and 19597 transitions. [2021-06-05 08:09:03,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-06-05 08:09:03,734 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-06-05 08:09:03,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:09:03,743 INFO L225 Difference]: With dead ends: 7271 [2021-06-05 08:09:03,743 INFO L226 Difference]: Without dead ends: 7001 [2021-06-05 08:09:03,744 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2251 ImplicationChecksByTransitivity, 1671.8ms TimeCoverageRelationStatistics Valid=2158, Invalid=6772, Unknown=0, NotChecked=0, Total=8930 [2021-06-05 08:09:03,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7001 states. [2021-06-05 08:09:03,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7001 to 5978. [2021-06-05 08:09:03,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5978 states, 5977 states have (on average 2.824661201271541) internal successors, (16883), 5977 states have internal predecessors, (16883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:03,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5978 states to 5978 states and 16883 transitions. [2021-06-05 08:09:03,820 INFO L78 Accepts]: Start accepts. Automaton has 5978 states and 16883 transitions. Word has length 180 [2021-06-05 08:09:03,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:09:03,820 INFO L482 AbstractCegarLoop]: Abstraction has 5978 states and 16883 transitions. [2021-06-05 08:09:03,821 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:03,821 INFO L276 IsEmpty]: Start isEmpty. Operand 5978 states and 16883 transitions. [2021-06-05 08:09:03,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-06-05 08:09:03,826 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:09:03,826 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:09:04,037 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable464,460 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:04,037 INFO L430 AbstractCegarLoop]: === Iteration 466 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:09:04,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:09:04,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1580938004, now seen corresponding path program 457 times [2021-06-05 08:09:04,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:09:04,037 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913636989] [2021-06-05 08:09:04,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:09:04,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:04,431 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:04,431 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:09:04,431 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913636989] [2021-06-05 08:09:04,431 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913636989] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:04,431 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622933501] [2021-06-05 08:09:04,431 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 461 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 461 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:04,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:04,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-05 08:09:04,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:09:04,715 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:04,715 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622933501] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:04,715 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:09:04,715 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2021-06-05 08:09:04,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014816419] [2021-06-05 08:09:04,716 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:09:04,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:09:04,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:09:04,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=1004, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:09:04,716 INFO L87 Difference]: Start difference. First operand 5978 states and 16883 transitions. Second operand has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:06,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:09:06,217 INFO L93 Difference]: Finished difference Result 7221 states and 19497 transitions. [2021-06-05 08:09:06,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-06-05 08:09:06,217 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-06-05 08:09:06,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:09:06,226 INFO L225 Difference]: With dead ends: 7221 [2021-06-05 08:09:06,226 INFO L226 Difference]: Without dead ends: 6951 [2021-06-05 08:09:06,227 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2399 ImplicationChecksByTransitivity, 1502.7ms TimeCoverageRelationStatistics Valid=2505, Invalid=6425, Unknown=0, NotChecked=0, Total=8930 [2021-06-05 08:09:06,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6951 states. [2021-06-05 08:09:06,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6951 to 5978. [2021-06-05 08:09:06,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5978 states, 5977 states have (on average 2.824661201271541) internal successors, (16883), 5977 states have internal predecessors, (16883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:06,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5978 states to 5978 states and 16883 transitions. [2021-06-05 08:09:06,303 INFO L78 Accepts]: Start accepts. Automaton has 5978 states and 16883 transitions. Word has length 180 [2021-06-05 08:09:06,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:09:06,303 INFO L482 AbstractCegarLoop]: Abstraction has 5978 states and 16883 transitions. [2021-06-05 08:09:06,303 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:06,303 INFO L276 IsEmpty]: Start isEmpty. Operand 5978 states and 16883 transitions. [2021-06-05 08:09:06,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-06-05 08:09:06,309 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:09:06,309 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:09:06,522 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 461 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable465 [2021-06-05 08:09:06,522 INFO L430 AbstractCegarLoop]: === Iteration 467 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:09:06,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:09:06,522 INFO L82 PathProgramCache]: Analyzing trace with hash 998787004, now seen corresponding path program 458 times [2021-06-05 08:09:06,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:09:06,522 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409565226] [2021-06-05 08:09:06,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:09:06,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:06,883 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:06,883 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:09:06,883 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409565226] [2021-06-05 08:09:06,883 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409565226] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:06,883 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137838874] [2021-06-05 08:09:06,883 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 462 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 462 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:06,962 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:09:06,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:09:06,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-05 08:09:06,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:09:07,224 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:07,225 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137838874] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:07,225 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:09:07,225 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2021-06-05 08:09:07,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408322968] [2021-06-05 08:09:07,225 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-06-05 08:09:07,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:09:07,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-06-05 08:09:07,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=1074, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 08:09:07,225 INFO L87 Difference]: Start difference. First operand 5978 states and 16883 transitions. Second operand has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:09,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:09:09,392 INFO L93 Difference]: Finished difference Result 7679 states and 20763 transitions. [2021-06-05 08:09:09,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-06-05 08:09:09,393 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-06-05 08:09:09,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:09:09,400 INFO L225 Difference]: With dead ends: 7679 [2021-06-05 08:09:09,400 INFO L226 Difference]: Without dead ends: 7056 [2021-06-05 08:09:09,401 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2722 ImplicationChecksByTransitivity, 2004.5ms TimeCoverageRelationStatistics Valid=2721, Invalid=7379, Unknown=0, NotChecked=0, Total=10100 [2021-06-05 08:09:09,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7056 states. [2021-06-05 08:09:09,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7056 to 5888. [2021-06-05 08:09:09,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5888 states, 5887 states have (on average 2.8279259385085784) internal successors, (16648), 5887 states have internal predecessors, (16648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:09,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5888 states to 5888 states and 16648 transitions. [2021-06-05 08:09:09,481 INFO L78 Accepts]: Start accepts. Automaton has 5888 states and 16648 transitions. Word has length 180 [2021-06-05 08:09:09,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:09:09,482 INFO L482 AbstractCegarLoop]: Abstraction has 5888 states and 16648 transitions. [2021-06-05 08:09:09,482 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:09,482 INFO L276 IsEmpty]: Start isEmpty. Operand 5888 states and 16648 transitions. [2021-06-05 08:09:09,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-06-05 08:09:09,487 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:09:09,487 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:09:09,701 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 462 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable466 [2021-06-05 08:09:09,701 INFO L430 AbstractCegarLoop]: === Iteration 468 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:09:09,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:09:09,701 INFO L82 PathProgramCache]: Analyzing trace with hash -33860598, now seen corresponding path program 459 times [2021-06-05 08:09:09,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:09:09,701 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158145845] [2021-06-05 08:09:09,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:09:09,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:10,095 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:10,095 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:09:10,095 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158145845] [2021-06-05 08:09:10,096 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158145845] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:10,096 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682800235] [2021-06-05 08:09:10,096 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 463 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 463 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:10,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-06-05 08:09:10,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:09:10,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 08:09:10,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:09:10,400 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:10,400 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682800235] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:10,400 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:09:10,400 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2021-06-05 08:09:10,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151472208] [2021-06-05 08:09:10,400 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:09:10,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:09:10,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:09:10,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=979, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:09:10,401 INFO L87 Difference]: Start difference. First operand 5888 states and 16648 transitions. Second operand has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:11,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:09:11,989 INFO L93 Difference]: Finished difference Result 7908 states and 21481 transitions. [2021-06-05 08:09:11,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-05 08:09:11,989 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-06-05 08:09:11,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:09:11,999 INFO L225 Difference]: With dead ends: 7908 [2021-06-05 08:09:11,999 INFO L226 Difference]: Without dead ends: 7638 [2021-06-05 08:09:12,000 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2547 ImplicationChecksByTransitivity, 1504.9ms TimeCoverageRelationStatistics Valid=2708, Invalid=6604, Unknown=0, NotChecked=0, Total=9312 [2021-06-05 08:09:12,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7638 states. [2021-06-05 08:09:12,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7638 to 6068. [2021-06-05 08:09:12,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6068 states, 6067 states have (on average 2.836162848195154) internal successors, (17207), 6067 states have internal predecessors, (17207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:12,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6068 states to 6068 states and 17207 transitions. [2021-06-05 08:09:12,081 INFO L78 Accepts]: Start accepts. Automaton has 6068 states and 17207 transitions. Word has length 180 [2021-06-05 08:09:12,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:09:12,081 INFO L482 AbstractCegarLoop]: Abstraction has 6068 states and 17207 transitions. [2021-06-05 08:09:12,081 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.055555555555555) internal successors, (182), 36 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:12,081 INFO L276 IsEmpty]: Start isEmpty. Operand 6068 states and 17207 transitions. [2021-06-05 08:09:12,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-06-05 08:09:12,086 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:09:12,086 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:09:12,302 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable467,463 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:12,303 INFO L430 AbstractCegarLoop]: === Iteration 469 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:09:12,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:09:12,303 INFO L82 PathProgramCache]: Analyzing trace with hash -11517348, now seen corresponding path program 460 times [2021-06-05 08:09:12,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:09:12,303 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688407905] [2021-06-05 08:09:12,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:09:12,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:12,633 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:12,633 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:09:12,633 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688407905] [2021-06-05 08:09:12,633 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688407905] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:12,633 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382904708] [2021-06-05 08:09:12,633 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 464 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 464 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:12,713 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:09:12,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:09:12,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 36 conjunts are in the unsatisfiable core [2021-06-05 08:09:12,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:09:13,006 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:13,006 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382904708] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:13,006 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:09:13,006 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2021-06-05 08:09:13,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238246569] [2021-06-05 08:09:13,007 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-06-05 08:09:13,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:09:13,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-06-05 08:09:13,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=1048, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 08:09:13,007 INFO L87 Difference]: Start difference. First operand 6068 states and 17207 transitions. Second operand has 37 states, 37 states have (on average 4.945945945945946) internal successors, (183), 37 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:14,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:09:14,885 INFO L93 Difference]: Finished difference Result 7851 states and 21341 transitions. [2021-06-05 08:09:14,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-06-05 08:09:14,886 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.945945945945946) internal successors, (183), 37 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-06-05 08:09:14,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:09:14,894 INFO L225 Difference]: With dead ends: 7851 [2021-06-05 08:09:14,895 INFO L226 Difference]: Without dead ends: 7276 [2021-06-05 08:09:14,896 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2954 ImplicationChecksByTransitivity, 1846.2ms TimeCoverageRelationStatistics Valid=2964, Invalid=7748, Unknown=0, NotChecked=0, Total=10712 [2021-06-05 08:09:14,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7276 states. [2021-06-05 08:09:14,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7276 to 6103. [2021-06-05 08:09:14,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6103 states, 6102 states have (on average 2.8323500491642086) internal successors, (17283), 6102 states have internal predecessors, (17283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:14,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6103 states to 6103 states and 17283 transitions. [2021-06-05 08:09:14,971 INFO L78 Accepts]: Start accepts. Automaton has 6103 states and 17283 transitions. Word has length 180 [2021-06-05 08:09:14,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:09:14,971 INFO L482 AbstractCegarLoop]: Abstraction has 6103 states and 17283 transitions. [2021-06-05 08:09:14,971 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 4.945945945945946) internal successors, (183), 37 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:14,971 INFO L276 IsEmpty]: Start isEmpty. Operand 6103 states and 17283 transitions. [2021-06-05 08:09:14,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-06-05 08:09:14,976 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:09:14,976 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:09:15,192 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 464 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable468 [2021-06-05 08:09:15,192 INFO L430 AbstractCegarLoop]: === Iteration 470 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:09:15,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:09:15,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1598313859, now seen corresponding path program 461 times [2021-06-05 08:09:15,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:09:15,193 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32981429] [2021-06-05 08:09:15,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:09:15,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:15,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:15,642 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:09:15,642 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32981429] [2021-06-05 08:09:15,642 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32981429] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:15,642 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928544321] [2021-06-05 08:09:15,642 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 465 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 465 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:15,725 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2021-06-05 08:09:15,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:09:15,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 08:09:15,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:09:15,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:15,937 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928544321] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:15,938 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:09:15,938 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-06-05 08:09:15,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092308985] [2021-06-05 08:09:15,938 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:09:15,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:09:15,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:09:15,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=979, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:09:15,938 INFO L87 Difference]: Start difference. First operand 6103 states and 17283 transitions. Second operand has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:16,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:09:16,764 INFO L93 Difference]: Finished difference Result 7946 states and 21097 transitions. [2021-06-05 08:09:16,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 08:09:16,764 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-06-05 08:09:16,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:09:16,770 INFO L225 Difference]: With dead ends: 7946 [2021-06-05 08:09:16,770 INFO L226 Difference]: Without dead ends: 7676 [2021-06-05 08:09:16,771 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 942 ImplicationChecksByTransitivity, 945.0ms TimeCoverageRelationStatistics Valid=1382, Invalid=3730, Unknown=0, NotChecked=0, Total=5112 [2021-06-05 08:09:16,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7676 states. [2021-06-05 08:09:16,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7676 to 6103. [2021-06-05 08:09:16,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6103 states, 6102 states have (on average 2.8323500491642086) internal successors, (17283), 6102 states have internal predecessors, (17283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:16,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6103 states to 6103 states and 17283 transitions. [2021-06-05 08:09:16,843 INFO L78 Accepts]: Start accepts. Automaton has 6103 states and 17283 transitions. Word has length 185 [2021-06-05 08:09:16,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:09:16,843 INFO L482 AbstractCegarLoop]: Abstraction has 6103 states and 17283 transitions. [2021-06-05 08:09:16,843 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:16,844 INFO L276 IsEmpty]: Start isEmpty. Operand 6103 states and 17283 transitions. [2021-06-05 08:09:16,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-06-05 08:09:16,849 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:09:16,849 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:09:17,065 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 465 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable469 [2021-06-05 08:09:17,065 INFO L430 AbstractCegarLoop]: === Iteration 471 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:09:17,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:09:17,065 INFO L82 PathProgramCache]: Analyzing trace with hash 450321491, now seen corresponding path program 462 times [2021-06-05 08:09:17,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:09:17,065 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391458384] [2021-06-05 08:09:17,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:09:17,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:17,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:17,545 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:09:17,545 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391458384] [2021-06-05 08:09:17,545 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391458384] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:17,545 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888530887] [2021-06-05 08:09:17,545 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 466 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 466 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:17,642 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2021-06-05 08:09:17,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:09:17,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 08:09:17,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:09:17,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:17,875 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888530887] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:17,875 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:09:17,875 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2021-06-05 08:09:17,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669356170] [2021-06-05 08:09:17,875 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-06-05 08:09:17,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:09:17,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-06-05 08:09:17,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=1062, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 08:09:17,875 INFO L87 Difference]: Start difference. First operand 6103 states and 17283 transitions. Second operand has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:18,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:09:18,684 INFO L93 Difference]: Finished difference Result 8641 states and 22487 transitions. [2021-06-05 08:09:18,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 08:09:18,684 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-06-05 08:09:18,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:09:18,695 INFO L225 Difference]: With dead ends: 8641 [2021-06-05 08:09:18,695 INFO L226 Difference]: Without dead ends: 8371 [2021-06-05 08:09:18,695 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1074 ImplicationChecksByTransitivity, 1030.0ms TimeCoverageRelationStatistics Valid=1453, Invalid=4097, Unknown=0, NotChecked=0, Total=5550 [2021-06-05 08:09:18,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8371 states. [2021-06-05 08:09:18,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8371 to 6103. [2021-06-05 08:09:18,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6103 states, 6102 states have (on average 2.8323500491642086) internal successors, (17283), 6102 states have internal predecessors, (17283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:18,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6103 states to 6103 states and 17283 transitions. [2021-06-05 08:09:18,779 INFO L78 Accepts]: Start accepts. Automaton has 6103 states and 17283 transitions. Word has length 185 [2021-06-05 08:09:18,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:09:18,779 INFO L482 AbstractCegarLoop]: Abstraction has 6103 states and 17283 transitions. [2021-06-05 08:09:18,779 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:18,780 INFO L276 IsEmpty]: Start isEmpty. Operand 6103 states and 17283 transitions. [2021-06-05 08:09:18,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-06-05 08:09:18,785 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:09:18,785 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:09:18,985 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable470,466 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:18,985 INFO L430 AbstractCegarLoop]: === Iteration 472 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:09:18,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:09:18,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1414408383, now seen corresponding path program 463 times [2021-06-05 08:09:18,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:09:18,986 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777382471] [2021-06-05 08:09:18,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:09:18,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:19,471 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:19,471 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:09:19,471 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777382471] [2021-06-05 08:09:19,471 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777382471] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:19,471 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951250537] [2021-06-05 08:09:19,471 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 467 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 467 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:19,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:19,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 08:09:19,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:09:19,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:19,855 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951250537] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:19,855 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:09:19,856 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-06-05 08:09:19,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290859606] [2021-06-05 08:09:19,856 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:09:19,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:09:19,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:09:19,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=1004, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:09:19,856 INFO L87 Difference]: Start difference. First operand 6103 states and 17283 transitions. Second operand has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:20,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:09:20,814 INFO L93 Difference]: Finished difference Result 8596 states and 22397 transitions. [2021-06-05 08:09:20,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 08:09:20,815 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-06-05 08:09:20,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:09:20,823 INFO L225 Difference]: With dead ends: 8596 [2021-06-05 08:09:20,823 INFO L226 Difference]: Without dead ends: 8326 [2021-06-05 08:09:20,824 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1152 ImplicationChecksByTransitivity, 1059.4ms TimeCoverageRelationStatistics Valid=1441, Invalid=4109, Unknown=0, NotChecked=0, Total=5550 [2021-06-05 08:09:20,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8326 states. [2021-06-05 08:09:20,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8326 to 6103. [2021-06-05 08:09:20,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6103 states, 6102 states have (on average 2.8323500491642086) internal successors, (17283), 6102 states have internal predecessors, (17283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:20,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6103 states to 6103 states and 17283 transitions. [2021-06-05 08:09:20,899 INFO L78 Accepts]: Start accepts. Automaton has 6103 states and 17283 transitions. Word has length 185 [2021-06-05 08:09:20,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:09:20,900 INFO L482 AbstractCegarLoop]: Abstraction has 6103 states and 17283 transitions. [2021-06-05 08:09:20,900 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:20,900 INFO L276 IsEmpty]: Start isEmpty. Operand 6103 states and 17283 transitions. [2021-06-05 08:09:20,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-06-05 08:09:20,905 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:09:20,905 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:09:21,121 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable471,467 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:21,121 INFO L430 AbstractCegarLoop]: === Iteration 473 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:09:21,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:09:21,121 INFO L82 PathProgramCache]: Analyzing trace with hash -716692975, now seen corresponding path program 464 times [2021-06-05 08:09:21,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:09:21,121 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290765831] [2021-06-05 08:09:21,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:09:21,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:21,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:21,649 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:09:21,649 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290765831] [2021-06-05 08:09:21,649 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290765831] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:21,649 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412620527] [2021-06-05 08:09:21,649 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 468 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 468 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:21,719 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:09:21,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:09:21,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 08:09:21,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:09:21,999 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:21,999 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412620527] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:21,999 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:09:21,999 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2021-06-05 08:09:21,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712702384] [2021-06-05 08:09:22,000 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-06-05 08:09:22,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:09:22,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-06-05 08:09:22,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=1086, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 08:09:22,000 INFO L87 Difference]: Start difference. First operand 6103 states and 17283 transitions. Second operand has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:22,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:09:22,971 INFO L93 Difference]: Finished difference Result 8546 states and 22297 transitions. [2021-06-05 08:09:22,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 08:09:22,971 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-06-05 08:09:22,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:09:22,980 INFO L225 Difference]: With dead ends: 8546 [2021-06-05 08:09:22,981 INFO L226 Difference]: Without dead ends: 8276 [2021-06-05 08:09:22,981 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1175 ImplicationChecksByTransitivity, 1108.5ms TimeCoverageRelationStatistics Valid=1463, Invalid=4389, Unknown=0, NotChecked=0, Total=5852 [2021-06-05 08:09:22,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8276 states. [2021-06-05 08:09:23,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8276 to 6103. [2021-06-05 08:09:23,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6103 states, 6102 states have (on average 2.8323500491642086) internal successors, (17283), 6102 states have internal predecessors, (17283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:23,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6103 states to 6103 states and 17283 transitions. [2021-06-05 08:09:23,058 INFO L78 Accepts]: Start accepts. Automaton has 6103 states and 17283 transitions. Word has length 185 [2021-06-05 08:09:23,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:09:23,058 INFO L482 AbstractCegarLoop]: Abstraction has 6103 states and 17283 transitions. [2021-06-05 08:09:23,058 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:23,058 INFO L276 IsEmpty]: Start isEmpty. Operand 6103 states and 17283 transitions. [2021-06-05 08:09:23,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-06-05 08:09:23,063 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:09:23,063 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:09:23,264 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable472,468 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:23,264 INFO L430 AbstractCegarLoop]: === Iteration 474 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:09:23,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:09:23,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1858391679, now seen corresponding path program 465 times [2021-06-05 08:09:23,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:09:23,264 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954021083] [2021-06-05 08:09:23,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:09:23,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:23,711 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:23,711 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:09:23,711 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954021083] [2021-06-05 08:09:23,711 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954021083] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:23,711 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096850716] [2021-06-05 08:09:23,711 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 469 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 469 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:23,793 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-06-05 08:09:23,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:09:23,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 62 conjunts are in the unsatisfiable core [2021-06-05 08:09:23,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:09:24,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:24,009 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096850716] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:24,009 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:09:24,009 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-06-05 08:09:24,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674020419] [2021-06-05 08:09:24,009 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:09:24,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:09:24,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:09:24,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=1025, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:09:24,010 INFO L87 Difference]: Start difference. First operand 6103 states and 17283 transitions. Second operand has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:24,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:09:24,909 INFO L93 Difference]: Finished difference Result 8496 states and 22197 transitions. [2021-06-05 08:09:24,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 08:09:24,909 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-06-05 08:09:24,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:09:24,918 INFO L225 Difference]: With dead ends: 8496 [2021-06-05 08:09:24,918 INFO L226 Difference]: Without dead ends: 8226 [2021-06-05 08:09:24,919 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1263 ImplicationChecksByTransitivity, 1013.7ms TimeCoverageRelationStatistics Valid=1465, Invalid=4387, Unknown=0, NotChecked=0, Total=5852 [2021-06-05 08:09:24,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8226 states. [2021-06-05 08:09:24,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8226 to 6103. [2021-06-05 08:09:24,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6103 states, 6102 states have (on average 2.8323500491642086) internal successors, (17283), 6102 states have internal predecessors, (17283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:24,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6103 states to 6103 states and 17283 transitions. [2021-06-05 08:09:24,996 INFO L78 Accepts]: Start accepts. Automaton has 6103 states and 17283 transitions. Word has length 185 [2021-06-05 08:09:24,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:09:24,996 INFO L482 AbstractCegarLoop]: Abstraction has 6103 states and 17283 transitions. [2021-06-05 08:09:24,996 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:24,996 INFO L276 IsEmpty]: Start isEmpty. Operand 6103 states and 17283 transitions. [2021-06-05 08:09:25,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-06-05 08:09:25,001 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:09:25,001 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:09:25,202 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable473,469 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:25,203 INFO L430 AbstractCegarLoop]: === Iteration 475 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:09:25,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:09:25,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1357077839, now seen corresponding path program 466 times [2021-06-05 08:09:25,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:09:25,203 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47008385] [2021-06-05 08:09:25,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:09:25,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:25,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:25,656 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:09:25,656 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47008385] [2021-06-05 08:09:25,656 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47008385] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:25,656 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849856457] [2021-06-05 08:09:25,656 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 470 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 470 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:25,725 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:09:25,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:09:25,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 08:09:25,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:09:25,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:25,957 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849856457] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:25,957 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:09:25,957 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2021-06-05 08:09:25,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079057539] [2021-06-05 08:09:25,957 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-06-05 08:09:25,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:09:25,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-06-05 08:09:25,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=1106, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 08:09:25,958 INFO L87 Difference]: Start difference. First operand 6103 states and 17283 transitions. Second operand has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:26,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:09:26,930 INFO L93 Difference]: Finished difference Result 8446 states and 22097 transitions. [2021-06-05 08:09:26,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-05 08:09:26,930 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-06-05 08:09:26,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:09:26,940 INFO L225 Difference]: With dead ends: 8446 [2021-06-05 08:09:26,940 INFO L226 Difference]: Without dead ends: 8176 [2021-06-05 08:09:26,941 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1289 ImplicationChecksByTransitivity, 1098.4ms TimeCoverageRelationStatistics Valid=1489, Invalid=4673, Unknown=0, NotChecked=0, Total=6162 [2021-06-05 08:09:26,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8176 states. [2021-06-05 08:09:27,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8176 to 6103. [2021-06-05 08:09:27,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6103 states, 6102 states have (on average 2.8323500491642086) internal successors, (17283), 6102 states have internal predecessors, (17283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:27,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6103 states to 6103 states and 17283 transitions. [2021-06-05 08:09:27,020 INFO L78 Accepts]: Start accepts. Automaton has 6103 states and 17283 transitions. Word has length 185 [2021-06-05 08:09:27,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:09:27,020 INFO L482 AbstractCegarLoop]: Abstraction has 6103 states and 17283 transitions. [2021-06-05 08:09:27,020 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:27,020 INFO L276 IsEmpty]: Start isEmpty. Operand 6103 states and 17283 transitions. [2021-06-05 08:09:27,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-06-05 08:09:27,026 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:09:27,026 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:09:27,226 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 470 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable474 [2021-06-05 08:09:27,226 INFO L430 AbstractCegarLoop]: === Iteration 476 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:09:27,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:09:27,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1833573181, now seen corresponding path program 467 times [2021-06-05 08:09:27,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:09:27,227 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907355699] [2021-06-05 08:09:27,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:09:27,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:27,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:27,668 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:09:27,668 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907355699] [2021-06-05 08:09:27,668 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907355699] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:27,668 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428223831] [2021-06-05 08:09:27,668 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 471 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 471 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:27,739 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2021-06-05 08:09:27,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:09:27,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 08:09:27,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:09:27,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:27,947 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428223831] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:27,947 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:09:27,947 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-06-05 08:09:27,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153012437] [2021-06-05 08:09:27,947 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:09:27,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:09:27,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:09:27,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=1042, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:09:27,948 INFO L87 Difference]: Start difference. First operand 6103 states and 17283 transitions. Second operand has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:28,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:09:28,859 INFO L93 Difference]: Finished difference Result 8396 states and 21997 transitions. [2021-06-05 08:09:28,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 08:09:28,859 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-06-05 08:09:28,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:09:28,869 INFO L225 Difference]: With dead ends: 8396 [2021-06-05 08:09:28,869 INFO L226 Difference]: Without dead ends: 8126 [2021-06-05 08:09:28,870 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1382 ImplicationChecksByTransitivity, 999.6ms TimeCoverageRelationStatistics Valid=1505, Invalid=4657, Unknown=0, NotChecked=0, Total=6162 [2021-06-05 08:09:28,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8126 states. [2021-06-05 08:09:28,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8126 to 6103. [2021-06-05 08:09:28,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6103 states, 6102 states have (on average 2.8323500491642086) internal successors, (17283), 6102 states have internal predecessors, (17283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:28,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6103 states to 6103 states and 17283 transitions. [2021-06-05 08:09:28,946 INFO L78 Accepts]: Start accepts. Automaton has 6103 states and 17283 transitions. Word has length 185 [2021-06-05 08:09:28,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:09:28,946 INFO L482 AbstractCegarLoop]: Abstraction has 6103 states and 17283 transitions. [2021-06-05 08:09:28,946 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:28,946 INFO L276 IsEmpty]: Start isEmpty. Operand 6103 states and 17283 transitions. [2021-06-05 08:09:28,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-06-05 08:09:28,951 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:09:28,951 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:09:29,152 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 471 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable475 [2021-06-05 08:09:29,152 INFO L430 AbstractCegarLoop]: === Iteration 477 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:09:29,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:09:29,152 INFO L82 PathProgramCache]: Analyzing trace with hash -994710003, now seen corresponding path program 468 times [2021-06-05 08:09:29,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:09:29,152 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062473677] [2021-06-05 08:09:29,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:09:29,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:29,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:29,550 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:09:29,551 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062473677] [2021-06-05 08:09:29,551 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062473677] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:29,551 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965853956] [2021-06-05 08:09:29,551 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 472 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 472 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:29,633 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2021-06-05 08:09:29,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:09:29,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 08:09:29,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:09:29,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:29,877 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965853956] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:29,877 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:09:29,877 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2021-06-05 08:09:29,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878807085] [2021-06-05 08:09:29,878 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-06-05 08:09:29,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:09:29,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-06-05 08:09:29,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=1122, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 08:09:29,878 INFO L87 Difference]: Start difference. First operand 6103 states and 17283 transitions. Second operand has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:30,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:09:30,863 INFO L93 Difference]: Finished difference Result 8346 states and 21897 transitions. [2021-06-05 08:09:30,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 08:09:30,863 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-06-05 08:09:30,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:09:30,872 INFO L225 Difference]: With dead ends: 8346 [2021-06-05 08:09:30,872 INFO L226 Difference]: Without dead ends: 8076 [2021-06-05 08:09:30,873 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1411 ImplicationChecksByTransitivity, 1113.8ms TimeCoverageRelationStatistics Valid=1531, Invalid=4949, Unknown=0, NotChecked=0, Total=6480 [2021-06-05 08:09:30,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8076 states. [2021-06-05 08:09:30,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8076 to 6103. [2021-06-05 08:09:30,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6103 states, 6102 states have (on average 2.8323500491642086) internal successors, (17283), 6102 states have internal predecessors, (17283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:30,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6103 states to 6103 states and 17283 transitions. [2021-06-05 08:09:30,968 INFO L78 Accepts]: Start accepts. Automaton has 6103 states and 17283 transitions. Word has length 185 [2021-06-05 08:09:30,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:09:30,968 INFO L482 AbstractCegarLoop]: Abstraction has 6103 states and 17283 transitions. [2021-06-05 08:09:30,968 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:30,968 INFO L276 IsEmpty]: Start isEmpty. Operand 6103 states and 17283 transitions. [2021-06-05 08:09:30,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-06-05 08:09:30,973 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:09:30,973 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:09:31,173 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 472 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable476 [2021-06-05 08:09:31,174 INFO L430 AbstractCegarLoop]: === Iteration 478 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:09:31,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:09:31,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1129931397, now seen corresponding path program 469 times [2021-06-05 08:09:31,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:09:31,174 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664571976] [2021-06-05 08:09:31,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:09:31,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:31,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:31,558 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:09:31,558 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664571976] [2021-06-05 08:09:31,558 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664571976] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:31,558 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031147862] [2021-06-05 08:09:31,558 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 473 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 473 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:31,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:31,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 08:09:31,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:09:31,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:31,829 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031147862] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:31,829 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:09:31,830 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-06-05 08:09:31,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501375627] [2021-06-05 08:09:31,830 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:09:31,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:09:31,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:09:31,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=1055, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:09:31,830 INFO L87 Difference]: Start difference. First operand 6103 states and 17283 transitions. Second operand has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:32,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:09:32,781 INFO L93 Difference]: Finished difference Result 8296 states and 21797 transitions. [2021-06-05 08:09:32,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 08:09:32,781 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-06-05 08:09:32,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:09:32,791 INFO L225 Difference]: With dead ends: 8296 [2021-06-05 08:09:32,791 INFO L226 Difference]: Without dead ends: 8026 [2021-06-05 08:09:32,791 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1505 ImplicationChecksByTransitivity, 1031.2ms TimeCoverageRelationStatistics Valid=1561, Invalid=4919, Unknown=0, NotChecked=0, Total=6480 [2021-06-05 08:09:32,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8026 states. [2021-06-05 08:09:32,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8026 to 6103. [2021-06-05 08:09:32,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6103 states, 6102 states have (on average 2.8323500491642086) internal successors, (17283), 6102 states have internal predecessors, (17283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:32,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6103 states to 6103 states and 17283 transitions. [2021-06-05 08:09:32,870 INFO L78 Accepts]: Start accepts. Automaton has 6103 states and 17283 transitions. Word has length 185 [2021-06-05 08:09:32,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:09:32,870 INFO L482 AbstractCegarLoop]: Abstraction has 6103 states and 17283 transitions. [2021-06-05 08:09:32,870 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:32,870 INFO L276 IsEmpty]: Start isEmpty. Operand 6103 states and 17283 transitions. [2021-06-05 08:09:32,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-06-05 08:09:32,875 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:09:32,875 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:09:33,075 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 473 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable477 [2021-06-05 08:09:33,075 INFO L430 AbstractCegarLoop]: === Iteration 479 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:09:33,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:09:33,076 INFO L82 PathProgramCache]: Analyzing trace with hash -2006666165, now seen corresponding path program 470 times [2021-06-05 08:09:33,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:09:33,076 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128442651] [2021-06-05 08:09:33,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:09:33,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:33,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:33,470 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:09:33,470 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128442651] [2021-06-05 08:09:33,470 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128442651] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:33,470 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406707935] [2021-06-05 08:09:33,470 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 474 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 474 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:33,537 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:09:33,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:09:33,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 08:09:33,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:09:33,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:33,760 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406707935] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:33,760 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:09:33,760 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2021-06-05 08:09:33,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955597447] [2021-06-05 08:09:33,760 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-06-05 08:09:33,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:09:33,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-06-05 08:09:33,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1134, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 08:09:33,760 INFO L87 Difference]: Start difference. First operand 6103 states and 17283 transitions. Second operand has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:34,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:09:34,829 INFO L93 Difference]: Finished difference Result 8246 states and 21697 transitions. [2021-06-05 08:09:34,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-06-05 08:09:34,830 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-06-05 08:09:34,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:09:34,837 INFO L225 Difference]: With dead ends: 8246 [2021-06-05 08:09:34,838 INFO L226 Difference]: Without dead ends: 7976 [2021-06-05 08:09:34,838 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1537 ImplicationChecksByTransitivity, 1184.7ms TimeCoverageRelationStatistics Valid=1589, Invalid=5217, Unknown=0, NotChecked=0, Total=6806 [2021-06-05 08:09:34,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7976 states. [2021-06-05 08:09:34,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7976 to 6103. [2021-06-05 08:09:34,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6103 states, 6102 states have (on average 2.8323500491642086) internal successors, (17283), 6102 states have internal predecessors, (17283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:34,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6103 states to 6103 states and 17283 transitions. [2021-06-05 08:09:34,910 INFO L78 Accepts]: Start accepts. Automaton has 6103 states and 17283 transitions. Word has length 185 [2021-06-05 08:09:34,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:09:34,910 INFO L482 AbstractCegarLoop]: Abstraction has 6103 states and 17283 transitions. [2021-06-05 08:09:34,910 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:34,910 INFO L276 IsEmpty]: Start isEmpty. Operand 6103 states and 17283 transitions. [2021-06-05 08:09:34,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-06-05 08:09:34,915 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:09:34,915 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:09:35,116 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 474 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable478 [2021-06-05 08:09:35,116 INFO L430 AbstractCegarLoop]: === Iteration 480 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:09:35,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:09:35,116 INFO L82 PathProgramCache]: Analyzing trace with hash 550974777, now seen corresponding path program 471 times [2021-06-05 08:09:35,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:09:35,116 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882359633] [2021-06-05 08:09:35,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:09:35,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:35,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:35,520 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:09:35,520 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882359633] [2021-06-05 08:09:35,520 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882359633] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:35,520 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695150555] [2021-06-05 08:09:35,520 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 475 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 475 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:35,602 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-06-05 08:09:35,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:09:35,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 56 conjunts are in the unsatisfiable core [2021-06-05 08:09:35,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:09:35,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:35,820 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695150555] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:35,820 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:09:35,820 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-06-05 08:09:35,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883163829] [2021-06-05 08:09:35,820 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:09:35,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:09:35,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:09:35,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=1064, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:09:35,821 INFO L87 Difference]: Start difference. First operand 6103 states and 17283 transitions. Second operand has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:36,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:09:36,874 INFO L93 Difference]: Finished difference Result 8196 states and 21597 transitions. [2021-06-05 08:09:36,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 08:09:36,875 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-06-05 08:09:36,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:09:36,884 INFO L225 Difference]: With dead ends: 8196 [2021-06-05 08:09:36,884 INFO L226 Difference]: Without dead ends: 7926 [2021-06-05 08:09:36,885 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1632 ImplicationChecksByTransitivity, 1167.6ms TimeCoverageRelationStatistics Valid=1633, Invalid=5173, Unknown=0, NotChecked=0, Total=6806 [2021-06-05 08:09:36,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7926 states. [2021-06-05 08:09:36,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7926 to 6103. [2021-06-05 08:09:36,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6103 states, 6102 states have (on average 2.8323500491642086) internal successors, (17283), 6102 states have internal predecessors, (17283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:36,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6103 states to 6103 states and 17283 transitions. [2021-06-05 08:09:36,967 INFO L78 Accepts]: Start accepts. Automaton has 6103 states and 17283 transitions. Word has length 185 [2021-06-05 08:09:36,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:09:36,968 INFO L482 AbstractCegarLoop]: Abstraction has 6103 states and 17283 transitions. [2021-06-05 08:09:36,968 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:36,968 INFO L276 IsEmpty]: Start isEmpty. Operand 6103 states and 17283 transitions. [2021-06-05 08:09:36,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-06-05 08:09:36,973 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:09:36,973 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:09:37,180 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable479,475 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:37,181 INFO L430 AbstractCegarLoop]: === Iteration 481 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:09:37,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:09:37,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1915523081, now seen corresponding path program 472 times [2021-06-05 08:09:37,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:09:37,181 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43450309] [2021-06-05 08:09:37,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:09:37,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:37,568 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:37,569 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:09:37,569 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43450309] [2021-06-05 08:09:37,569 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43450309] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:37,569 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385043454] [2021-06-05 08:09:37,569 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 476 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 476 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:37,637 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:09:37,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:09:37,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 08:09:37,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:09:37,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:37,861 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385043454] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:37,861 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:09:37,861 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2021-06-05 08:09:37,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425610008] [2021-06-05 08:09:37,862 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-06-05 08:09:37,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:09:37,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-06-05 08:09:37,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1142, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 08:09:37,862 INFO L87 Difference]: Start difference. First operand 6103 states and 17283 transitions. Second operand has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:39,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:09:39,004 INFO L93 Difference]: Finished difference Result 8146 states and 21497 transitions. [2021-06-05 08:09:39,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-05 08:09:39,004 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-06-05 08:09:39,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:09:39,013 INFO L225 Difference]: With dead ends: 8146 [2021-06-05 08:09:39,013 INFO L226 Difference]: Without dead ends: 7876 [2021-06-05 08:09:39,014 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1667 ImplicationChecksByTransitivity, 1217.2ms TimeCoverageRelationStatistics Valid=1663, Invalid=5477, Unknown=0, NotChecked=0, Total=7140 [2021-06-05 08:09:39,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7876 states. [2021-06-05 08:09:39,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7876 to 6103. [2021-06-05 08:09:39,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6103 states, 6102 states have (on average 2.8323500491642086) internal successors, (17283), 6102 states have internal predecessors, (17283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:39,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6103 states to 6103 states and 17283 transitions. [2021-06-05 08:09:39,087 INFO L78 Accepts]: Start accepts. Automaton has 6103 states and 17283 transitions. Word has length 185 [2021-06-05 08:09:39,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:09:39,087 INFO L482 AbstractCegarLoop]: Abstraction has 6103 states and 17283 transitions. [2021-06-05 08:09:39,088 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:39,088 INFO L276 IsEmpty]: Start isEmpty. Operand 6103 states and 17283 transitions. [2021-06-05 08:09:39,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-06-05 08:09:39,092 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:09:39,092 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:09:39,293 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable480,476 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:39,293 INFO L430 AbstractCegarLoop]: === Iteration 482 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:09:39,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:09:39,293 INFO L82 PathProgramCache]: Analyzing trace with hash -361708937, now seen corresponding path program 473 times [2021-06-05 08:09:39,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:09:39,293 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244839658] [2021-06-05 08:09:39,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:09:39,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:39,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:39,647 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:09:39,647 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244839658] [2021-06-05 08:09:39,647 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244839658] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:39,647 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609916996] [2021-06-05 08:09:39,647 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 477 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 477 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:39,717 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2021-06-05 08:09:39,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:09:39,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 08:09:39,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:09:39,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:39,918 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609916996] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:39,918 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:09:39,918 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-06-05 08:09:39,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493087043] [2021-06-05 08:09:39,919 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:09:39,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:09:39,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:09:39,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1069, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:09:39,919 INFO L87 Difference]: Start difference. First operand 6103 states and 17283 transitions. Second operand has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:40,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:09:40,930 INFO L93 Difference]: Finished difference Result 8096 states and 21397 transitions. [2021-06-05 08:09:40,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 08:09:40,931 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-06-05 08:09:40,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:09:40,939 INFO L225 Difference]: With dead ends: 8096 [2021-06-05 08:09:40,940 INFO L226 Difference]: Without dead ends: 7826 [2021-06-05 08:09:40,940 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1763 ImplicationChecksByTransitivity, 1064.4ms TimeCoverageRelationStatistics Valid=1721, Invalid=5419, Unknown=0, NotChecked=0, Total=7140 [2021-06-05 08:09:40,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7826 states. [2021-06-05 08:09:40,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7826 to 6103. [2021-06-05 08:09:41,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6103 states, 6102 states have (on average 2.8323500491642086) internal successors, (17283), 6102 states have internal predecessors, (17283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:41,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6103 states to 6103 states and 17283 transitions. [2021-06-05 08:09:41,014 INFO L78 Accepts]: Start accepts. Automaton has 6103 states and 17283 transitions. Word has length 185 [2021-06-05 08:09:41,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:09:41,014 INFO L482 AbstractCegarLoop]: Abstraction has 6103 states and 17283 transitions. [2021-06-05 08:09:41,014 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:41,014 INFO L276 IsEmpty]: Start isEmpty. Operand 6103 states and 17283 transitions. [2021-06-05 08:09:41,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-06-05 08:09:41,019 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:09:41,019 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:09:41,220 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable481,477 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:41,220 INFO L430 AbstractCegarLoop]: === Iteration 483 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:09:41,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:09:41,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1260232377, now seen corresponding path program 474 times [2021-06-05 08:09:41,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:09:41,220 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514395941] [2021-06-05 08:09:41,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:09:41,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:41,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:41,621 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:09:41,621 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514395941] [2021-06-05 08:09:41,622 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514395941] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:41,622 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050800118] [2021-06-05 08:09:41,622 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 478 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 478 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:41,703 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2021-06-05 08:09:41,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:09:41,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 08:09:41,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:09:41,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:41,918 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050800118] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:41,918 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:09:41,919 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2021-06-05 08:09:41,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784910127] [2021-06-05 08:09:41,919 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-06-05 08:09:41,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:09:41,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-06-05 08:09:41,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1146, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 08:09:41,919 INFO L87 Difference]: Start difference. First operand 6103 states and 17283 transitions. Second operand has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:43,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:09:43,086 INFO L93 Difference]: Finished difference Result 8046 states and 21297 transitions. [2021-06-05 08:09:43,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-05 08:09:43,087 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-06-05 08:09:43,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:09:43,095 INFO L225 Difference]: With dead ends: 8046 [2021-06-05 08:09:43,095 INFO L226 Difference]: Without dead ends: 7776 [2021-06-05 08:09:43,096 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1801 ImplicationChecksByTransitivity, 1253.6ms TimeCoverageRelationStatistics Valid=1753, Invalid=5729, Unknown=0, NotChecked=0, Total=7482 [2021-06-05 08:09:43,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7776 states. [2021-06-05 08:09:43,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7776 to 6103. [2021-06-05 08:09:43,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6103 states, 6102 states have (on average 2.8323500491642086) internal successors, (17283), 6102 states have internal predecessors, (17283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:43,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6103 states to 6103 states and 17283 transitions. [2021-06-05 08:09:43,170 INFO L78 Accepts]: Start accepts. Automaton has 6103 states and 17283 transitions. Word has length 185 [2021-06-05 08:09:43,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:09:43,170 INFO L482 AbstractCegarLoop]: Abstraction has 6103 states and 17283 transitions. [2021-06-05 08:09:43,170 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:43,170 INFO L276 IsEmpty]: Start isEmpty. Operand 6103 states and 17283 transitions. [2021-06-05 08:09:43,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-06-05 08:09:43,175 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:09:43,175 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:09:43,375 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable482,478 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:43,375 INFO L430 AbstractCegarLoop]: === Iteration 484 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:09:43,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:09:43,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1419781429, now seen corresponding path program 475 times [2021-06-05 08:09:43,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:09:43,375 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088338229] [2021-06-05 08:09:43,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:09:43,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:43,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:43,738 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:09:43,738 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088338229] [2021-06-05 08:09:43,738 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088338229] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:43,738 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428559883] [2021-06-05 08:09:43,738 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 479 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 479 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:43,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:43,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 08:09:43,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:09:44,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:44,004 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428559883] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:44,004 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:09:44,004 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-06-05 08:09:44,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646301847] [2021-06-05 08:09:44,004 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:09:44,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:09:44,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:09:44,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1070, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:09:44,005 INFO L87 Difference]: Start difference. First operand 6103 states and 17283 transitions. Second operand has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:45,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:09:45,048 INFO L93 Difference]: Finished difference Result 7996 states and 21197 transitions. [2021-06-05 08:09:45,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-05 08:09:45,048 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-06-05 08:09:45,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:09:45,055 INFO L225 Difference]: With dead ends: 7996 [2021-06-05 08:09:45,055 INFO L226 Difference]: Without dead ends: 7726 [2021-06-05 08:09:45,056 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1898 ImplicationChecksByTransitivity, 1118.2ms TimeCoverageRelationStatistics Valid=1825, Invalid=5657, Unknown=0, NotChecked=0, Total=7482 [2021-06-05 08:09:45,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7726 states. [2021-06-05 08:09:45,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7726 to 6103. [2021-06-05 08:09:45,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6103 states, 6102 states have (on average 2.8323500491642086) internal successors, (17283), 6102 states have internal predecessors, (17283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:45,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6103 states to 6103 states and 17283 transitions. [2021-06-05 08:09:45,124 INFO L78 Accepts]: Start accepts. Automaton has 6103 states and 17283 transitions. Word has length 185 [2021-06-05 08:09:45,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:09:45,125 INFO L482 AbstractCegarLoop]: Abstraction has 6103 states and 17283 transitions. [2021-06-05 08:09:45,125 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:45,125 INFO L276 IsEmpty]: Start isEmpty. Operand 6103 states and 17283 transitions. [2021-06-05 08:09:45,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-06-05 08:09:45,130 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:09:45,130 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:09:45,330 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable483,479 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:45,330 INFO L430 AbstractCegarLoop]: === Iteration 485 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:09:45,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:09:45,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1039337477, now seen corresponding path program 476 times [2021-06-05 08:09:45,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:09:45,330 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524458359] [2021-06-05 08:09:45,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:09:45,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:45,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:45,686 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:09:45,686 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524458359] [2021-06-05 08:09:45,686 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524458359] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:45,686 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557551618] [2021-06-05 08:09:45,686 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 480 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 480 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:45,752 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:09:45,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:09:45,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 08:09:45,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:09:45,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:45,970 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557551618] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:45,970 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:09:45,970 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2021-06-05 08:09:45,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007803943] [2021-06-05 08:09:45,970 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-06-05 08:09:45,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:09:45,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-06-05 08:09:45,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1146, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 08:09:45,971 INFO L87 Difference]: Start difference. First operand 6103 states and 17283 transitions. Second operand has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:47,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:09:47,196 INFO L93 Difference]: Finished difference Result 7946 states and 21097 transitions. [2021-06-05 08:09:47,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-06-05 08:09:47,196 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-06-05 08:09:47,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:09:47,205 INFO L225 Difference]: With dead ends: 7946 [2021-06-05 08:09:47,205 INFO L226 Difference]: Without dead ends: 7676 [2021-06-05 08:09:47,206 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1939 ImplicationChecksByTransitivity, 1274.0ms TimeCoverageRelationStatistics Valid=1859, Invalid=5973, Unknown=0, NotChecked=0, Total=7832 [2021-06-05 08:09:47,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7676 states. [2021-06-05 08:09:47,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7676 to 6103. [2021-06-05 08:09:47,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6103 states, 6102 states have (on average 2.8323500491642086) internal successors, (17283), 6102 states have internal predecessors, (17283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:47,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6103 states to 6103 states and 17283 transitions. [2021-06-05 08:09:47,281 INFO L78 Accepts]: Start accepts. Automaton has 6103 states and 17283 transitions. Word has length 185 [2021-06-05 08:09:47,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:09:47,281 INFO L482 AbstractCegarLoop]: Abstraction has 6103 states and 17283 transitions. [2021-06-05 08:09:47,281 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:47,281 INFO L276 IsEmpty]: Start isEmpty. Operand 6103 states and 17283 transitions. [2021-06-05 08:09:47,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-06-05 08:09:47,286 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:09:47,287 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:09:47,487 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable484,480 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:47,487 INFO L430 AbstractCegarLoop]: === Iteration 486 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:09:47,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:09:47,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1663712627, now seen corresponding path program 477 times [2021-06-05 08:09:47,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:09:47,487 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385283237] [2021-06-05 08:09:47,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:09:47,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:47,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:47,832 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:09:47,832 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385283237] [2021-06-05 08:09:47,832 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385283237] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:47,832 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020370333] [2021-06-05 08:09:47,832 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 481 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 481 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:47,915 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-06-05 08:09:47,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:09:47,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 50 conjunts are in the unsatisfiable core [2021-06-05 08:09:47,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:09:48,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:48,110 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020370333] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:48,110 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:09:48,110 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-06-05 08:09:48,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503967544] [2021-06-05 08:09:48,110 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:09:48,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:09:48,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:09:48,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=1067, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:09:48,111 INFO L87 Difference]: Start difference. First operand 6103 states and 17283 transitions. Second operand has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:49,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:09:49,189 INFO L93 Difference]: Finished difference Result 7896 states and 20997 transitions. [2021-06-05 08:09:49,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-05 08:09:49,190 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-06-05 08:09:49,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:09:49,198 INFO L225 Difference]: With dead ends: 7896 [2021-06-05 08:09:49,198 INFO L226 Difference]: Without dead ends: 7626 [2021-06-05 08:09:49,199 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2037 ImplicationChecksByTransitivity, 1113.5ms TimeCoverageRelationStatistics Valid=1945, Invalid=5887, Unknown=0, NotChecked=0, Total=7832 [2021-06-05 08:09:49,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7626 states. [2021-06-05 08:09:49,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7626 to 6103. [2021-06-05 08:09:49,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6103 states, 6102 states have (on average 2.8323500491642086) internal successors, (17283), 6102 states have internal predecessors, (17283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:49,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6103 states to 6103 states and 17283 transitions. [2021-06-05 08:09:49,272 INFO L78 Accepts]: Start accepts. Automaton has 6103 states and 17283 transitions. Word has length 185 [2021-06-05 08:09:49,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:09:49,272 INFO L482 AbstractCegarLoop]: Abstraction has 6103 states and 17283 transitions. [2021-06-05 08:09:49,272 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:49,272 INFO L276 IsEmpty]: Start isEmpty. Operand 6103 states and 17283 transitions. [2021-06-05 08:09:49,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-06-05 08:09:49,277 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:09:49,277 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:09:49,477 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable485,481 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:49,477 INFO L430 AbstractCegarLoop]: === Iteration 487 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:09:49,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:09:49,478 INFO L82 PathProgramCache]: Analyzing trace with hash -1822202813, now seen corresponding path program 478 times [2021-06-05 08:09:49,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:09:49,478 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589729240] [2021-06-05 08:09:49,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:09:49,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:49,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:49,841 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:09:49,841 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589729240] [2021-06-05 08:09:49,841 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589729240] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:49,841 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41001700] [2021-06-05 08:09:49,841 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 482 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 482 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:49,917 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:09:49,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:09:49,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 08:09:49,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:09:50,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:50,169 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41001700] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:50,169 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:09:50,169 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2021-06-05 08:09:50,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40423718] [2021-06-05 08:09:50,169 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-06-05 08:09:50,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:09:50,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-06-05 08:09:50,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1142, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 08:09:50,169 INFO L87 Difference]: Start difference. First operand 6103 states and 17283 transitions. Second operand has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:51,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:09:51,664 INFO L93 Difference]: Finished difference Result 7846 states and 20897 transitions. [2021-06-05 08:09:51,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-05 08:09:51,664 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-06-05 08:09:51,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:09:51,673 INFO L225 Difference]: With dead ends: 7846 [2021-06-05 08:09:51,673 INFO L226 Difference]: Without dead ends: 7576 [2021-06-05 08:09:51,674 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2081 ImplicationChecksByTransitivity, 1493.9ms TimeCoverageRelationStatistics Valid=1981, Invalid=6209, Unknown=0, NotChecked=0, Total=8190 [2021-06-05 08:09:51,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7576 states. [2021-06-05 08:09:51,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7576 to 6103. [2021-06-05 08:09:51,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6103 states, 6102 states have (on average 2.8323500491642086) internal successors, (17283), 6102 states have internal predecessors, (17283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:51,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6103 states to 6103 states and 17283 transitions. [2021-06-05 08:09:51,751 INFO L78 Accepts]: Start accepts. Automaton has 6103 states and 17283 transitions. Word has length 185 [2021-06-05 08:09:51,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:09:51,751 INFO L482 AbstractCegarLoop]: Abstraction has 6103 states and 17283 transitions. [2021-06-05 08:09:51,751 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:51,751 INFO L276 IsEmpty]: Start isEmpty. Operand 6103 states and 17283 transitions. [2021-06-05 08:09:51,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-06-05 08:09:51,756 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:09:51,756 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:09:51,972 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 482 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable486 [2021-06-05 08:09:51,972 INFO L430 AbstractCegarLoop]: === Iteration 488 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:09:51,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:09:51,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1080814385, now seen corresponding path program 479 times [2021-06-05 08:09:51,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:09:51,973 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563164219] [2021-06-05 08:09:51,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:09:51,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:52,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:52,429 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:09:52,429 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563164219] [2021-06-05 08:09:52,429 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563164219] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:52,429 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362559563] [2021-06-05 08:09:52,429 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 483 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 483 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:52,521 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2021-06-05 08:09:52,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:09:52,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 08:09:52,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:09:52,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:52,753 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362559563] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:52,753 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:09:52,753 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-06-05 08:09:52,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863305326] [2021-06-05 08:09:52,754 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:09:52,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:09:52,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:09:52,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=1060, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:09:52,754 INFO L87 Difference]: Start difference. First operand 6103 states and 17283 transitions. Second operand has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:54,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:09:54,037 INFO L93 Difference]: Finished difference Result 7796 states and 20797 transitions. [2021-06-05 08:09:54,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-06-05 08:09:54,037 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-06-05 08:09:54,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:09:54,046 INFO L225 Difference]: With dead ends: 7796 [2021-06-05 08:09:54,046 INFO L226 Difference]: Without dead ends: 7526 [2021-06-05 08:09:54,047 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2180 ImplicationChecksByTransitivity, 1310.7ms TimeCoverageRelationStatistics Valid=2081, Invalid=6109, Unknown=0, NotChecked=0, Total=8190 [2021-06-05 08:09:54,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7526 states. [2021-06-05 08:09:54,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7526 to 6103. [2021-06-05 08:09:54,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6103 states, 6102 states have (on average 2.8323500491642086) internal successors, (17283), 6102 states have internal predecessors, (17283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:54,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6103 states to 6103 states and 17283 transitions. [2021-06-05 08:09:54,124 INFO L78 Accepts]: Start accepts. Automaton has 6103 states and 17283 transitions. Word has length 185 [2021-06-05 08:09:54,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:09:54,125 INFO L482 AbstractCegarLoop]: Abstraction has 6103 states and 17283 transitions. [2021-06-05 08:09:54,125 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:54,125 INFO L276 IsEmpty]: Start isEmpty. Operand 6103 states and 17283 transitions. [2021-06-05 08:09:54,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-06-05 08:09:54,130 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:09:54,130 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:09:54,346 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable487,483 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:54,346 INFO L430 AbstractCegarLoop]: === Iteration 489 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:09:54,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:09:54,346 INFO L82 PathProgramCache]: Analyzing trace with hash 835737089, now seen corresponding path program 480 times [2021-06-05 08:09:54,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:09:54,346 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963423510] [2021-06-05 08:09:54,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:09:54,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:54,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:54,722 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:09:54,722 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963423510] [2021-06-05 08:09:54,722 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963423510] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:54,722 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204914000] [2021-06-05 08:09:54,723 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 484 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 484 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:54,831 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2021-06-05 08:09:54,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:09:54,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 48 conjunts are in the unsatisfiable core [2021-06-05 08:09:54,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:09:55,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:55,050 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204914000] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:55,050 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:09:55,050 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2021-06-05 08:09:55,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077508928] [2021-06-05 08:09:55,050 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-06-05 08:09:55,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:09:55,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-06-05 08:09:55,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1134, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 08:09:55,050 INFO L87 Difference]: Start difference. First operand 6103 states and 17283 transitions. Second operand has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:56,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:09:56,450 INFO L93 Difference]: Finished difference Result 7746 states and 20697 transitions. [2021-06-05 08:09:56,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-06-05 08:09:56,451 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-06-05 08:09:56,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:09:56,458 INFO L225 Difference]: With dead ends: 7746 [2021-06-05 08:09:56,458 INFO L226 Difference]: Without dead ends: 7476 [2021-06-05 08:09:56,459 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2157 ImplicationChecksByTransitivity, 1395.2ms TimeCoverageRelationStatistics Valid=1981, Invalid=6575, Unknown=0, NotChecked=0, Total=8556 [2021-06-05 08:09:56,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7476 states. [2021-06-05 08:09:56,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7476 to 6103. [2021-06-05 08:09:56,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6103 states, 6102 states have (on average 2.8323500491642086) internal successors, (17283), 6102 states have internal predecessors, (17283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:56,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6103 states to 6103 states and 17283 transitions. [2021-06-05 08:09:56,529 INFO L78 Accepts]: Start accepts. Automaton has 6103 states and 17283 transitions. Word has length 185 [2021-06-05 08:09:56,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:09:56,529 INFO L482 AbstractCegarLoop]: Abstraction has 6103 states and 17283 transitions. [2021-06-05 08:09:56,529 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:56,529 INFO L276 IsEmpty]: Start isEmpty. Operand 6103 states and 17283 transitions. [2021-06-05 08:09:56,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-06-05 08:09:56,534 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:09:56,534 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:09:56,734 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 484 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable488 [2021-06-05 08:09:56,735 INFO L430 AbstractCegarLoop]: === Iteration 490 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:09:56,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:09:56,735 INFO L82 PathProgramCache]: Analyzing trace with hash 458886767, now seen corresponding path program 481 times [2021-06-05 08:09:56,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:09:56,735 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930256514] [2021-06-05 08:09:56,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:09:56,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:57,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:57,089 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:09:57,089 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930256514] [2021-06-05 08:09:57,089 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930256514] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:57,089 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489959469] [2021-06-05 08:09:57,089 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 485 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 485 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:57,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:57,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 08:09:57,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:09:57,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:57,359 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489959469] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:57,359 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:09:57,359 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-06-05 08:09:57,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706993842] [2021-06-05 08:09:57,359 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:09:57,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:09:57,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:09:57,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=1049, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:09:57,360 INFO L87 Difference]: Start difference. First operand 6103 states and 17283 transitions. Second operand has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:58,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:09:58,535 INFO L93 Difference]: Finished difference Result 7696 states and 20597 transitions. [2021-06-05 08:09:58,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-05 08:09:58,536 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-06-05 08:09:58,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:09:58,544 INFO L225 Difference]: With dead ends: 7696 [2021-06-05 08:09:58,544 INFO L226 Difference]: Without dead ends: 7426 [2021-06-05 08:09:58,545 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2327 ImplicationChecksByTransitivity, 1186.7ms TimeCoverageRelationStatistics Valid=2233, Invalid=6323, Unknown=0, NotChecked=0, Total=8556 [2021-06-05 08:09:58,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7426 states. [2021-06-05 08:09:58,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7426 to 6103. [2021-06-05 08:09:58,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6103 states, 6102 states have (on average 2.8323500491642086) internal successors, (17283), 6102 states have internal predecessors, (17283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:58,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6103 states to 6103 states and 17283 transitions. [2021-06-05 08:09:58,622 INFO L78 Accepts]: Start accepts. Automaton has 6103 states and 17283 transitions. Word has length 185 [2021-06-05 08:09:58,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:09:58,622 INFO L482 AbstractCegarLoop]: Abstraction has 6103 states and 17283 transitions. [2021-06-05 08:09:58,622 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:09:58,622 INFO L276 IsEmpty]: Start isEmpty. Operand 6103 states and 17283 transitions. [2021-06-05 08:09:58,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-06-05 08:09:58,627 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:09:58,627 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:09:58,841 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable489,485 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:58,841 INFO L430 AbstractCegarLoop]: === Iteration 491 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:09:58,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:09:58,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1785642303, now seen corresponding path program 482 times [2021-06-05 08:09:58,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:09:58,841 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517345739] [2021-06-05 08:09:58,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:09:58,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:09:59,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:59,205 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:09:59,205 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517345739] [2021-06-05 08:09:59,205 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517345739] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:59,205 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762563578] [2021-06-05 08:09:59,205 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 486 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 486 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:09:59,279 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:09:59,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:09:59,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 08:09:59,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:09:59,547 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:09:59,548 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762563578] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:09:59,548 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:09:59,548 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2021-06-05 08:09:59,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231536516] [2021-06-05 08:09:59,548 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-06-05 08:09:59,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:09:59,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-06-05 08:09:59,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=1122, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 08:09:59,548 INFO L87 Difference]: Start difference. First operand 6103 states and 17283 transitions. Second operand has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:00,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:10:00,980 INFO L93 Difference]: Finished difference Result 7646 states and 20497 transitions. [2021-06-05 08:10:00,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-06-05 08:10:00,980 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-06-05 08:10:00,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:10:00,988 INFO L225 Difference]: With dead ends: 7646 [2021-06-05 08:10:00,989 INFO L226 Difference]: Without dead ends: 7376 [2021-06-05 08:10:00,989 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2377 ImplicationChecksByTransitivity, 1443.2ms TimeCoverageRelationStatistics Valid=2273, Invalid=6657, Unknown=0, NotChecked=0, Total=8930 [2021-06-05 08:10:00,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7376 states. [2021-06-05 08:10:01,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7376 to 6103. [2021-06-05 08:10:01,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6103 states, 6102 states have (on average 2.8323500491642086) internal successors, (17283), 6102 states have internal predecessors, (17283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:01,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6103 states to 6103 states and 17283 transitions. [2021-06-05 08:10:01,062 INFO L78 Accepts]: Start accepts. Automaton has 6103 states and 17283 transitions. Word has length 185 [2021-06-05 08:10:01,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:10:01,062 INFO L482 AbstractCegarLoop]: Abstraction has 6103 states and 17283 transitions. [2021-06-05 08:10:01,062 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:01,062 INFO L276 IsEmpty]: Start isEmpty. Operand 6103 states and 17283 transitions. [2021-06-05 08:10:01,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-06-05 08:10:01,067 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:10:01,067 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:10:01,267 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 486 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable490 [2021-06-05 08:10:01,268 INFO L430 AbstractCegarLoop]: === Iteration 492 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:10:01,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:10:01,268 INFO L82 PathProgramCache]: Analyzing trace with hash -2055108819, now seen corresponding path program 483 times [2021-06-05 08:10:01,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:10:01,268 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105267374] [2021-06-05 08:10:01,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:10:01,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:10:01,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:01,617 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:10:01,617 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105267374] [2021-06-05 08:10:01,617 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105267374] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:01,617 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169546370] [2021-06-05 08:10:01,617 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 487 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 487 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:10:01,706 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-06-05 08:10:01,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:10:01,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 44 conjunts are in the unsatisfiable core [2021-06-05 08:10:01,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:10:01,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:01,898 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169546370] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:01,898 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:10:01,898 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-06-05 08:10:01,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331359424] [2021-06-05 08:10:01,898 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:10:01,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:10:01,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:10:01,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=1034, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:10:01,898 INFO L87 Difference]: Start difference. First operand 6103 states and 17283 transitions. Second operand has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:03,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:10:03,259 INFO L93 Difference]: Finished difference Result 7596 states and 20397 transitions. [2021-06-05 08:10:03,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-06-05 08:10:03,260 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-06-05 08:10:03,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:10:03,267 INFO L225 Difference]: With dead ends: 7596 [2021-06-05 08:10:03,267 INFO L226 Difference]: Without dead ends: 7326 [2021-06-05 08:10:03,267 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2478 ImplicationChecksByTransitivity, 1376.3ms TimeCoverageRelationStatistics Valid=2401, Invalid=6529, Unknown=0, NotChecked=0, Total=8930 [2021-06-05 08:10:03,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7326 states. [2021-06-05 08:10:03,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7326 to 6103. [2021-06-05 08:10:03,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6103 states, 6102 states have (on average 2.8323500491642086) internal successors, (17283), 6102 states have internal predecessors, (17283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:03,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6103 states to 6103 states and 17283 transitions. [2021-06-05 08:10:03,337 INFO L78 Accepts]: Start accepts. Automaton has 6103 states and 17283 transitions. Word has length 185 [2021-06-05 08:10:03,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:10:03,337 INFO L482 AbstractCegarLoop]: Abstraction has 6103 states and 17283 transitions. [2021-06-05 08:10:03,337 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:03,337 INFO L276 IsEmpty]: Start isEmpty. Operand 6103 states and 17283 transitions. [2021-06-05 08:10:03,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-06-05 08:10:03,343 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:10:03,343 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:10:03,559 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable491,487 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:10:03,559 INFO L430 AbstractCegarLoop]: === Iteration 493 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:10:03,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:10:03,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1056212483, now seen corresponding path program 484 times [2021-06-05 08:10:03,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:10:03,559 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731139777] [2021-06-05 08:10:03,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:10:03,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:10:03,979 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:03,979 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:10:03,979 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731139777] [2021-06-05 08:10:03,979 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731139777] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:03,979 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139255603] [2021-06-05 08:10:03,979 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 488 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 488 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:10:04,075 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:10:04,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:10:04,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 08:10:04,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:10:04,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:04,298 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139255603] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:04,299 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:10:04,299 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2021-06-05 08:10:04,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893846295] [2021-06-05 08:10:04,299 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-06-05 08:10:04,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:10:04,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-06-05 08:10:04,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=1106, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 08:10:04,299 INFO L87 Difference]: Start difference. First operand 6103 states and 17283 transitions. Second operand has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:06,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:10:06,078 INFO L93 Difference]: Finished difference Result 7546 states and 20297 transitions. [2021-06-05 08:10:06,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-05 08:10:06,078 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-06-05 08:10:06,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:10:06,087 INFO L225 Difference]: With dead ends: 7546 [2021-06-05 08:10:06,087 INFO L226 Difference]: Without dead ends: 7276 [2021-06-05 08:10:06,088 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2531 ImplicationChecksByTransitivity, 1691.9ms TimeCoverageRelationStatistics Valid=2443, Invalid=6869, Unknown=0, NotChecked=0, Total=9312 [2021-06-05 08:10:06,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7276 states. [2021-06-05 08:10:06,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7276 to 6103. [2021-06-05 08:10:06,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6103 states, 6102 states have (on average 2.8323500491642086) internal successors, (17283), 6102 states have internal predecessors, (17283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:06,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6103 states to 6103 states and 17283 transitions. [2021-06-05 08:10:06,165 INFO L78 Accepts]: Start accepts. Automaton has 6103 states and 17283 transitions. Word has length 185 [2021-06-05 08:10:06,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:10:06,165 INFO L482 AbstractCegarLoop]: Abstraction has 6103 states and 17283 transitions. [2021-06-05 08:10:06,166 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:06,166 INFO L276 IsEmpty]: Start isEmpty. Operand 6103 states and 17283 transitions. [2021-06-05 08:10:06,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-06-05 08:10:06,171 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:10:06,171 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:10:06,385 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable492,488 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:10:06,385 INFO L430 AbstractCegarLoop]: === Iteration 494 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:10:06,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:10:06,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1359426923, now seen corresponding path program 485 times [2021-06-05 08:10:06,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:10:06,385 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340255447] [2021-06-05 08:10:06,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:10:06,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:10:06,730 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:06,730 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:10:06,730 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340255447] [2021-06-05 08:10:06,730 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340255447] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:06,730 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996971322] [2021-06-05 08:10:06,730 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 489 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 489 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:10:06,812 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2021-06-05 08:10:06,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:10:06,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 08:10:06,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:10:07,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:07,045 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996971322] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:07,045 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:10:07,045 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-06-05 08:10:07,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489895598] [2021-06-05 08:10:07,045 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:10:07,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:10:07,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:10:07,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=1015, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:10:07,046 INFO L87 Difference]: Start difference. First operand 6103 states and 17283 transitions. Second operand has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:08,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:10:08,535 INFO L93 Difference]: Finished difference Result 7496 states and 20197 transitions. [2021-06-05 08:10:08,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-05 08:10:08,535 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-06-05 08:10:08,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:10:08,545 INFO L225 Difference]: With dead ends: 7496 [2021-06-05 08:10:08,546 INFO L226 Difference]: Without dead ends: 7226 [2021-06-05 08:10:08,546 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2633 ImplicationChecksByTransitivity, 1420.9ms TimeCoverageRelationStatistics Valid=2585, Invalid=6727, Unknown=0, NotChecked=0, Total=9312 [2021-06-05 08:10:08,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7226 states. [2021-06-05 08:10:08,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7226 to 6103. [2021-06-05 08:10:08,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6103 states, 6102 states have (on average 2.8323500491642086) internal successors, (17283), 6102 states have internal predecessors, (17283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:08,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6103 states to 6103 states and 17283 transitions. [2021-06-05 08:10:08,623 INFO L78 Accepts]: Start accepts. Automaton has 6103 states and 17283 transitions. Word has length 185 [2021-06-05 08:10:08,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:10:08,623 INFO L482 AbstractCegarLoop]: Abstraction has 6103 states and 17283 transitions. [2021-06-05 08:10:08,623 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:08,623 INFO L276 IsEmpty]: Start isEmpty. Operand 6103 states and 17283 transitions. [2021-06-05 08:10:08,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-06-05 08:10:08,629 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:10:08,629 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:10:08,842 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable493,489 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:10:08,842 INFO L430 AbstractCegarLoop]: === Iteration 495 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:10:08,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:10:08,842 INFO L82 PathProgramCache]: Analyzing trace with hash -905221061, now seen corresponding path program 486 times [2021-06-05 08:10:08,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:10:08,842 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749838153] [2021-06-05 08:10:08,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:10:08,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:10:09,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:09,215 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:10:09,215 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749838153] [2021-06-05 08:10:09,215 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749838153] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:09,215 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786162565] [2021-06-05 08:10:09,215 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 490 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 490 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:10:09,299 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2021-06-05 08:10:09,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:10:09,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 42 conjunts are in the unsatisfiable core [2021-06-05 08:10:09,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:10:09,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:09,534 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786162565] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:09,534 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:10:09,534 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2021-06-05 08:10:09,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201909622] [2021-06-05 08:10:09,535 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-06-05 08:10:09,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:10:09,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-06-05 08:10:09,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=1086, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 08:10:09,535 INFO L87 Difference]: Start difference. First operand 6103 states and 17283 transitions. Second operand has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:11,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:10:11,413 INFO L93 Difference]: Finished difference Result 7446 states and 20097 transitions. [2021-06-05 08:10:11,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-06-05 08:10:11,413 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-06-05 08:10:11,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:10:11,420 INFO L225 Difference]: With dead ends: 7446 [2021-06-05 08:10:11,420 INFO L226 Difference]: Without dead ends: 7176 [2021-06-05 08:10:11,421 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2577 ImplicationChecksByTransitivity, 1842.5ms TimeCoverageRelationStatistics Valid=2392, Invalid=7310, Unknown=0, NotChecked=0, Total=9702 [2021-06-05 08:10:11,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7176 states. [2021-06-05 08:10:11,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7176 to 6103. [2021-06-05 08:10:11,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6103 states, 6102 states have (on average 2.8323500491642086) internal successors, (17283), 6102 states have internal predecessors, (17283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:11,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6103 states to 6103 states and 17283 transitions. [2021-06-05 08:10:11,497 INFO L78 Accepts]: Start accepts. Automaton has 6103 states and 17283 transitions. Word has length 185 [2021-06-05 08:10:11,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:10:11,497 INFO L482 AbstractCegarLoop]: Abstraction has 6103 states and 17283 transitions. [2021-06-05 08:10:11,497 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:11,497 INFO L276 IsEmpty]: Start isEmpty. Operand 6103 states and 17283 transitions. [2021-06-05 08:10:11,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-06-05 08:10:11,503 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:10:11,503 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:10:11,719 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 490 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable494 [2021-06-05 08:10:11,719 INFO L430 AbstractCegarLoop]: === Iteration 496 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:10:11,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:10:11,720 INFO L82 PathProgramCache]: Analyzing trace with hash -290981591, now seen corresponding path program 487 times [2021-06-05 08:10:11,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:10:11,720 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981766441] [2021-06-05 08:10:11,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:10:11,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:10:12,069 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:12,069 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:10:12,069 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981766441] [2021-06-05 08:10:12,069 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981766441] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:12,069 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969304933] [2021-06-05 08:10:12,069 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 491 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 491 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:10:12,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:10:12,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 08:10:12,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:10:12,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:12,354 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969304933] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:12,354 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:10:12,354 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-06-05 08:10:12,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332328839] [2021-06-05 08:10:12,354 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:10:12,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:10:12,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:10:12,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=992, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:10:12,355 INFO L87 Difference]: Start difference. First operand 6103 states and 17283 transitions. Second operand has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:13,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:10:13,827 INFO L93 Difference]: Finished difference Result 7396 states and 19997 transitions. [2021-06-05 08:10:13,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-06-05 08:10:13,827 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-06-05 08:10:13,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:10:13,835 INFO L225 Difference]: With dead ends: 7396 [2021-06-05 08:10:13,836 INFO L226 Difference]: Without dead ends: 7126 [2021-06-05 08:10:13,837 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2792 ImplicationChecksByTransitivity, 1411.2ms TimeCoverageRelationStatistics Valid=2785, Invalid=6917, Unknown=0, NotChecked=0, Total=9702 [2021-06-05 08:10:13,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7126 states. [2021-06-05 08:10:13,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7126 to 6103. [2021-06-05 08:10:13,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6103 states, 6102 states have (on average 2.8323500491642086) internal successors, (17283), 6102 states have internal predecessors, (17283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:13,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6103 states to 6103 states and 17283 transitions. [2021-06-05 08:10:13,914 INFO L78 Accepts]: Start accepts. Automaton has 6103 states and 17283 transitions. Word has length 185 [2021-06-05 08:10:13,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:10:13,914 INFO L482 AbstractCegarLoop]: Abstraction has 6103 states and 17283 transitions. [2021-06-05 08:10:13,914 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:13,915 INFO L276 IsEmpty]: Start isEmpty. Operand 6103 states and 17283 transitions. [2021-06-05 08:10:13,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-06-05 08:10:13,920 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:10:13,920 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:10:14,137 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable495,491 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:10:14,137 INFO L430 AbstractCegarLoop]: === Iteration 497 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:10:14,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:10:14,137 INFO L82 PathProgramCache]: Analyzing trace with hash -2006223879, now seen corresponding path program 488 times [2021-06-05 08:10:14,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:10:14,137 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456637836] [2021-06-05 08:10:14,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:10:14,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:10:14,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:14,488 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:10:14,488 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456637836] [2021-06-05 08:10:14,488 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456637836] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:14,488 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651947454] [2021-06-05 08:10:14,488 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 492 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 492 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:10:14,568 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:10:14,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:10:14,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 08:10:14,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:10:14,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:14,776 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651947454] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:14,776 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:10:14,776 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2021-06-05 08:10:14,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93584445] [2021-06-05 08:10:14,776 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-06-05 08:10:14,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:10:14,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-06-05 08:10:14,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=1062, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 08:10:14,777 INFO L87 Difference]: Start difference. First operand 6103 states and 17283 transitions. Second operand has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:16,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:10:16,588 INFO L93 Difference]: Finished difference Result 7406 states and 20047 transitions. [2021-06-05 08:10:16,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-06-05 08:10:16,588 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-06-05 08:10:16,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:10:16,597 INFO L225 Difference]: With dead ends: 7406 [2021-06-05 08:10:16,597 INFO L226 Difference]: Without dead ends: 7136 [2021-06-05 08:10:16,598 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2851 ImplicationChecksByTransitivity, 1756.0ms TimeCoverageRelationStatistics Valid=2831, Invalid=7269, Unknown=0, NotChecked=0, Total=10100 [2021-06-05 08:10:16,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7136 states. [2021-06-05 08:10:16,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7136 to 6103. [2021-06-05 08:10:16,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6103 states, 6102 states have (on average 2.833169452638479) internal successors, (17288), 6102 states have internal predecessors, (17288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:16,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6103 states to 6103 states and 17288 transitions. [2021-06-05 08:10:16,674 INFO L78 Accepts]: Start accepts. Automaton has 6103 states and 17288 transitions. Word has length 185 [2021-06-05 08:10:16,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:10:16,674 INFO L482 AbstractCegarLoop]: Abstraction has 6103 states and 17288 transitions. [2021-06-05 08:10:16,675 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:16,675 INFO L276 IsEmpty]: Start isEmpty. Operand 6103 states and 17288 transitions. [2021-06-05 08:10:16,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-06-05 08:10:16,680 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:10:16,680 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:10:16,893 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 492 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable496 [2021-06-05 08:10:16,893 INFO L430 AbstractCegarLoop]: === Iteration 498 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:10:16,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:10:16,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1256095815, now seen corresponding path program 489 times [2021-06-05 08:10:16,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:10:16,893 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573108952] [2021-06-05 08:10:16,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:10:16,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:10:17,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:17,239 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:10:17,239 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573108952] [2021-06-05 08:10:17,239 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573108952] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:17,239 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503053000] [2021-06-05 08:10:17,239 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 493 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 493 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:10:17,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-06-05 08:10:17,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:10:17,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 08:10:17,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:10:17,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:17,528 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503053000] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:17,528 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:10:17,528 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-06-05 08:10:17,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292082326] [2021-06-05 08:10:17,529 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-05 08:10:17,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:10:17,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-05 08:10:17,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=965, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 08:10:17,529 INFO L87 Difference]: Start difference. First operand 6103 states and 17288 transitions. Second operand has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:18,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:10:18,983 INFO L93 Difference]: Finished difference Result 8148 states and 22171 transitions. [2021-06-05 08:10:18,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-06-05 08:10:18,983 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-06-05 08:10:18,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:10:18,991 INFO L225 Difference]: With dead ends: 8148 [2021-06-05 08:10:18,991 INFO L226 Difference]: Without dead ends: 7878 [2021-06-05 08:10:18,992 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2954 ImplicationChecksByTransitivity, 1427.2ms TimeCoverageRelationStatistics Valid=3002, Invalid=7098, Unknown=0, NotChecked=0, Total=10100 [2021-06-05 08:10:19,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7878 states. [2021-06-05 08:10:19,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7878 to 6283. [2021-06-05 08:10:19,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6283 states, 6282 states have (on average 2.840974212034384) internal successors, (17847), 6282 states have internal predecessors, (17847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:19,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6283 states to 6283 states and 17847 transitions. [2021-06-05 08:10:19,071 INFO L78 Accepts]: Start accepts. Automaton has 6283 states and 17847 transitions. Word has length 185 [2021-06-05 08:10:19,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:10:19,071 INFO L482 AbstractCegarLoop]: Abstraction has 6283 states and 17847 transitions. [2021-06-05 08:10:19,071 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:19,071 INFO L276 IsEmpty]: Start isEmpty. Operand 6283 states and 17847 transitions. [2021-06-05 08:10:19,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-06-05 08:10:19,076 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:10:19,077 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:10:19,285 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 493 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable497 [2021-06-05 08:10:19,285 INFO L430 AbstractCegarLoop]: === Iteration 499 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:10:19,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:10:19,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1278439065, now seen corresponding path program 490 times [2021-06-05 08:10:19,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:10:19,285 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176550224] [2021-06-05 08:10:19,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:10:19,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:10:19,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:19,670 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:10:19,670 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176550224] [2021-06-05 08:10:19,670 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176550224] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:19,670 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882940198] [2021-06-05 08:10:19,670 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 494 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 494 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:10:19,768 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:10:19,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:10:19,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 08:10:19,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:10:19,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:19,971 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882940198] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:19,971 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:10:19,971 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2021-06-05 08:10:19,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357158970] [2021-06-05 08:10:19,971 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-06-05 08:10:19,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:10:19,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-06-05 08:10:19,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=1034, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 08:10:19,971 INFO L87 Difference]: Start difference. First operand 6283 states and 17847 transitions. Second operand has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:21,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:10:21,582 INFO L93 Difference]: Finished difference Result 7610 states and 20821 transitions. [2021-06-05 08:10:21,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-06-05 08:10:21,582 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-06-05 08:10:21,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:10:21,590 INFO L225 Difference]: With dead ends: 7610 [2021-06-05 08:10:21,591 INFO L226 Difference]: Without dead ends: 7121 [2021-06-05 08:10:21,592 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3017 ImplicationChecksByTransitivity, 1624.8ms TimeCoverageRelationStatistics Valid=3052, Invalid=7454, Unknown=0, NotChecked=0, Total=10506 [2021-06-05 08:10:21,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7121 states. [2021-06-05 08:10:21,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7121 to 6228. [2021-06-05 08:10:21,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6228 states, 6227 states have (on average 2.8397302071623574) internal successors, (17683), 6227 states have internal predecessors, (17683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:21,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6228 states to 6228 states and 17683 transitions. [2021-06-05 08:10:21,670 INFO L78 Accepts]: Start accepts. Automaton has 6228 states and 17683 transitions. Word has length 185 [2021-06-05 08:10:21,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:10:21,670 INFO L482 AbstractCegarLoop]: Abstraction has 6228 states and 17683 transitions. [2021-06-05 08:10:21,670 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 5.054054054054054) internal successors, (187), 37 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:21,670 INFO L276 IsEmpty]: Start isEmpty. Operand 6228 states and 17683 transitions. [2021-06-05 08:10:21,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:10:21,675 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:10:21,675 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:10:21,885 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 494 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable498 [2021-06-05 08:10:21,885 INFO L430 AbstractCegarLoop]: === Iteration 500 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:10:21,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:10:21,886 INFO L82 PathProgramCache]: Analyzing trace with hash 658293267, now seen corresponding path program 491 times [2021-06-05 08:10:21,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:10:21,886 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536323526] [2021-06-05 08:10:21,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:10:21,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:10:22,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:22,325 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:10:22,325 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536323526] [2021-06-05 08:10:22,325 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536323526] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:22,325 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329768378] [2021-06-05 08:10:22,325 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 495 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 495 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:10:22,444 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2021-06-05 08:10:22,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:10:22,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 39 conjunts are in the unsatisfiable core [2021-06-05 08:10:22,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:10:22,789 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:22,789 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329768378] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:22,789 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:10:22,789 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 41 [2021-06-05 08:10:22,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753405131] [2021-06-05 08:10:22,790 INFO L462 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-06-05 08:10:22,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:10:22,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-06-05 08:10:22,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=373, Invalid=1267, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 08:10:22,790 INFO L87 Difference]: Start difference. First operand 6228 states and 17683 transitions. Second operand has 41 states, 41 states have (on average 5.365853658536586) internal successors, (220), 41 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:23,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:10:23,645 INFO L93 Difference]: Finished difference Result 7668 states and 20883 transitions. [2021-06-05 08:10:23,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 08:10:23,645 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 5.365853658536586) internal successors, (220), 41 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:10:23,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:10:23,654 INFO L225 Difference]: With dead ends: 7668 [2021-06-05 08:10:23,655 INFO L226 Difference]: Without dead ends: 7334 [2021-06-05 08:10:23,655 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1277 ImplicationChecksByTransitivity, 1054.0ms TimeCoverageRelationStatistics Valid=1716, Invalid=4446, Unknown=0, NotChecked=0, Total=6162 [2021-06-05 08:10:23,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7334 states. [2021-06-05 08:10:23,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7334 to 6313. [2021-06-05 08:10:23,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6313 states, 6312 states have (on average 2.828422053231939) internal successors, (17853), 6312 states have internal predecessors, (17853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:23,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6313 states to 6313 states and 17853 transitions. [2021-06-05 08:10:23,741 INFO L78 Accepts]: Start accepts. Automaton has 6313 states and 17853 transitions. Word has length 190 [2021-06-05 08:10:23,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:10:23,742 INFO L482 AbstractCegarLoop]: Abstraction has 6313 states and 17853 transitions. [2021-06-05 08:10:23,742 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 41 states, 41 states have (on average 5.365853658536586) internal successors, (220), 41 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:23,742 INFO L276 IsEmpty]: Start isEmpty. Operand 6313 states and 17853 transitions. [2021-06-05 08:10:23,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:10:23,747 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:10:23,747 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:10:23,964 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 495 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable499 [2021-06-05 08:10:23,964 INFO L430 AbstractCegarLoop]: === Iteration 501 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:10:23,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:10:23,965 INFO L82 PathProgramCache]: Analyzing trace with hash 2055723223, now seen corresponding path program 492 times [2021-06-05 08:10:23,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:10:23,965 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854070444] [2021-06-05 08:10:23,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:10:23,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:10:24,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:24,431 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:10:24,431 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854070444] [2021-06-05 08:10:24,431 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854070444] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:24,431 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587036107] [2021-06-05 08:10:24,431 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 496 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 496 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:10:24,543 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2021-06-05 08:10:24,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:10:24,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 08:10:24,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:10:24,780 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:24,780 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587036107] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:24,780 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:10:24,780 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 38 [2021-06-05 08:10:24,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435172095] [2021-06-05 08:10:24,780 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 08:10:24,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:10:24,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 08:10:24,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=1076, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 08:10:24,781 INFO L87 Difference]: Start difference. First operand 6313 states and 17853 transitions. Second operand has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:25,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:10:25,787 INFO L93 Difference]: Finished difference Result 9061 states and 23477 transitions. [2021-06-05 08:10:25,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 08:10:25,787 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:10:25,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:10:25,798 INFO L225 Difference]: With dead ends: 9061 [2021-06-05 08:10:25,798 INFO L226 Difference]: Without dead ends: 8791 [2021-06-05 08:10:25,799 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 929 ImplicationChecksByTransitivity, 1220.6ms TimeCoverageRelationStatistics Valid=1502, Invalid=3754, Unknown=0, NotChecked=0, Total=5256 [2021-06-05 08:10:25,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8791 states. [2021-06-05 08:10:25,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8791 to 6328. [2021-06-05 08:10:25,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 6327 states have (on average 2.8264580369843526) internal successors, (17883), 6327 states have internal predecessors, (17883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:25,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 17883 transitions. [2021-06-05 08:10:25,888 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 17883 transitions. Word has length 190 [2021-06-05 08:10:25,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:10:25,888 INFO L482 AbstractCegarLoop]: Abstraction has 6328 states and 17883 transitions. [2021-06-05 08:10:25,888 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:25,888 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 17883 transitions. [2021-06-05 08:10:25,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:10:25,893 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:10:25,894 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:10:26,108 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable500,496 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:10:26,109 INFO L430 AbstractCegarLoop]: === Iteration 502 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:10:26,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:10:26,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1885117351, now seen corresponding path program 493 times [2021-06-05 08:10:26,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:10:26,109 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410891311] [2021-06-05 08:10:26,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:10:26,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:10:26,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:26,671 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:10:26,671 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410891311] [2021-06-05 08:10:26,671 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410891311] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:26,671 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561365327] [2021-06-05 08:10:26,671 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 497 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 497 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:10:26,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:10:26,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 08:10:26,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:10:27,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:27,017 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561365327] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:27,017 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:10:27,017 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2021-06-05 08:10:27,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727129531] [2021-06-05 08:10:27,017 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 08:10:27,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:10:27,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 08:10:27,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=1164, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 08:10:27,018 INFO L87 Difference]: Start difference. First operand 6328 states and 17883 transitions. Second operand has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:27,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:10:27,849 INFO L93 Difference]: Finished difference Result 8946 states and 23247 transitions. [2021-06-05 08:10:27,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 08:10:27,849 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:10:27,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:10:27,859 INFO L225 Difference]: With dead ends: 8946 [2021-06-05 08:10:27,860 INFO L226 Difference]: Without dead ends: 8676 [2021-06-05 08:10:27,860 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1046 ImplicationChecksByTransitivity, 1100.6ms TimeCoverageRelationStatistics Valid=1595, Invalid=4257, Unknown=0, NotChecked=0, Total=5852 [2021-06-05 08:10:27,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8676 states. [2021-06-05 08:10:27,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8676 to 6328. [2021-06-05 08:10:27,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 6327 states have (on average 2.8264580369843526) internal successors, (17883), 6327 states have internal predecessors, (17883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:27,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 17883 transitions. [2021-06-05 08:10:27,946 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 17883 transitions. Word has length 190 [2021-06-05 08:10:27,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:10:27,946 INFO L482 AbstractCegarLoop]: Abstraction has 6328 states and 17883 transitions. [2021-06-05 08:10:27,946 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:27,946 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 17883 transitions. [2021-06-05 08:10:27,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:10:27,952 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:10:27,952 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:10:28,165 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 497 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable501 [2021-06-05 08:10:28,165 INFO L430 AbstractCegarLoop]: === Iteration 503 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:10:28,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:10:28,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1568357099, now seen corresponding path program 494 times [2021-06-05 08:10:28,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:10:28,165 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444296380] [2021-06-05 08:10:28,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:10:28,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:10:28,619 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:28,620 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:10:28,620 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444296380] [2021-06-05 08:10:28,620 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444296380] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:28,620 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714326413] [2021-06-05 08:10:28,620 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 498 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 498 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:10:28,697 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:10:28,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:10:28,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 08:10:28,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:10:28,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:28,934 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714326413] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:28,934 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:10:28,934 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 38 [2021-06-05 08:10:28,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971318288] [2021-06-05 08:10:28,934 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 08:10:28,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:10:28,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 08:10:28,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=301, Invalid=1105, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 08:10:28,935 INFO L87 Difference]: Start difference. First operand 6328 states and 17883 transitions. Second operand has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:29,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:10:29,776 INFO L93 Difference]: Finished difference Result 8921 states and 23197 transitions. [2021-06-05 08:10:29,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 08:10:29,776 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:10:29,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:10:29,785 INFO L225 Difference]: With dead ends: 8921 [2021-06-05 08:10:29,785 INFO L226 Difference]: Without dead ends: 8651 [2021-06-05 08:10:29,785 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1032 ImplicationChecksByTransitivity, 1069.0ms TimeCoverageRelationStatistics Valid=1494, Invalid=4056, Unknown=0, NotChecked=0, Total=5550 [2021-06-05 08:10:29,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8651 states. [2021-06-05 08:10:29,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8651 to 6328. [2021-06-05 08:10:29,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 6327 states have (on average 2.8264580369843526) internal successors, (17883), 6327 states have internal predecessors, (17883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:29,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 17883 transitions. [2021-06-05 08:10:29,871 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 17883 transitions. Word has length 190 [2021-06-05 08:10:29,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:10:29,871 INFO L482 AbstractCegarLoop]: Abstraction has 6328 states and 17883 transitions. [2021-06-05 08:10:29,871 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:29,871 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 17883 transitions. [2021-06-05 08:10:29,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:10:29,877 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:10:29,877 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:10:30,089 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable502,498 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:10:30,089 INFO L430 AbstractCegarLoop]: === Iteration 504 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:10:30,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:10:30,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1578617829, now seen corresponding path program 495 times [2021-06-05 08:10:30,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:10:30,089 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510416484] [2021-06-05 08:10:30,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:10:30,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:10:30,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:30,565 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:10:30,565 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510416484] [2021-06-05 08:10:30,565 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510416484] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:30,565 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879211468] [2021-06-05 08:10:30,565 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 499 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 499 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:10:30,658 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2021-06-05 08:10:30,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:10:30,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 08:10:30,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:10:30,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:30,918 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879211468] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:30,918 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:10:30,918 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2021-06-05 08:10:30,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521104199] [2021-06-05 08:10:30,918 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 08:10:30,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:10:30,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 08:10:30,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=1192, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 08:10:30,919 INFO L87 Difference]: Start difference. First operand 6328 states and 17883 transitions. Second operand has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:31,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:10:31,806 INFO L93 Difference]: Finished difference Result 8871 states and 23097 transitions. [2021-06-05 08:10:31,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 08:10:31,807 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:10:31,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:10:31,817 INFO L225 Difference]: With dead ends: 8871 [2021-06-05 08:10:31,817 INFO L226 Difference]: Without dead ends: 8601 [2021-06-05 08:10:31,818 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1155 ImplicationChecksByTransitivity, 1125.4ms TimeCoverageRelationStatistics Valid=1595, Invalid=4567, Unknown=0, NotChecked=0, Total=6162 [2021-06-05 08:10:31,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8601 states. [2021-06-05 08:10:31,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8601 to 6328. [2021-06-05 08:10:31,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 6327 states have (on average 2.8264580369843526) internal successors, (17883), 6327 states have internal predecessors, (17883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:31,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 17883 transitions. [2021-06-05 08:10:31,909 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 17883 transitions. Word has length 190 [2021-06-05 08:10:31,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:10:31,909 INFO L482 AbstractCegarLoop]: Abstraction has 6328 states and 17883 transitions. [2021-06-05 08:10:31,909 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:31,909 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 17883 transitions. [2021-06-05 08:10:31,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:10:31,915 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:10:31,915 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:10:32,115 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 499 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable503 [2021-06-05 08:10:32,116 INFO L430 AbstractCegarLoop]: === Iteration 505 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:10:32,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:10:32,116 INFO L82 PathProgramCache]: Analyzing trace with hash -286112045, now seen corresponding path program 496 times [2021-06-05 08:10:32,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:10:32,116 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915803278] [2021-06-05 08:10:32,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:10:32,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:10:32,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:32,567 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:10:32,568 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915803278] [2021-06-05 08:10:32,568 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915803278] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:32,568 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527797653] [2021-06-05 08:10:32,568 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 500 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 500 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:10:32,650 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:10:32,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:10:32,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 08:10:32,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:10:32,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:32,892 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527797653] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:32,892 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:10:32,893 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 38 [2021-06-05 08:10:32,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010925830] [2021-06-05 08:10:32,893 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 08:10:32,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:10:32,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 08:10:32,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=1130, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 08:10:32,893 INFO L87 Difference]: Start difference. First operand 6328 states and 17883 transitions. Second operand has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:33,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:10:33,814 INFO L93 Difference]: Finished difference Result 8821 states and 22997 transitions. [2021-06-05 08:10:33,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 08:10:33,815 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:10:33,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:10:33,825 INFO L225 Difference]: With dead ends: 8821 [2021-06-05 08:10:33,825 INFO L226 Difference]: Without dead ends: 8551 [2021-06-05 08:10:33,825 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1139 ImplicationChecksByTransitivity, 1089.2ms TimeCoverageRelationStatistics Valid=1502, Invalid=4350, Unknown=0, NotChecked=0, Total=5852 [2021-06-05 08:10:33,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8551 states. [2021-06-05 08:10:33,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8551 to 6328. [2021-06-05 08:10:33,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 6327 states have (on average 2.8264580369843526) internal successors, (17883), 6327 states have internal predecessors, (17883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:33,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 17883 transitions. [2021-06-05 08:10:33,914 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 17883 transitions. Word has length 190 [2021-06-05 08:10:33,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:10:33,914 INFO L482 AbstractCegarLoop]: Abstraction has 6328 states and 17883 transitions. [2021-06-05 08:10:33,914 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:33,914 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 17883 transitions. [2021-06-05 08:10:33,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:10:33,920 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:10:33,920 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:10:34,133 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 500 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable504 [2021-06-05 08:10:34,133 INFO L430 AbstractCegarLoop]: === Iteration 506 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:10:34,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:10:34,133 INFO L82 PathProgramCache]: Analyzing trace with hash 411603363, now seen corresponding path program 497 times [2021-06-05 08:10:34,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:10:34,133 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272285106] [2021-06-05 08:10:34,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:10:34,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:10:34,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:34,685 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:10:34,685 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272285106] [2021-06-05 08:10:34,685 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272285106] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:34,685 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694636240] [2021-06-05 08:10:34,685 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 501 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 501 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:10:34,789 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2021-06-05 08:10:34,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:10:34,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 08:10:34,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:10:35,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:35,040 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694636240] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:35,041 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:10:35,041 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2021-06-05 08:10:35,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250475837] [2021-06-05 08:10:35,041 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 08:10:35,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:10:35,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 08:10:35,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=1216, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 08:10:35,041 INFO L87 Difference]: Start difference. First operand 6328 states and 17883 transitions. Second operand has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:36,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:10:36,020 INFO L93 Difference]: Finished difference Result 8771 states and 22897 transitions. [2021-06-05 08:10:36,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-05 08:10:36,020 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:10:36,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:10:36,030 INFO L225 Difference]: With dead ends: 8771 [2021-06-05 08:10:36,031 INFO L226 Difference]: Without dead ends: 8501 [2021-06-05 08:10:36,031 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1269 ImplicationChecksByTransitivity, 1277.0ms TimeCoverageRelationStatistics Valid=1611, Invalid=4869, Unknown=0, NotChecked=0, Total=6480 [2021-06-05 08:10:36,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8501 states. [2021-06-05 08:10:36,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8501 to 6328. [2021-06-05 08:10:36,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 6327 states have (on average 2.8264580369843526) internal successors, (17883), 6327 states have internal predecessors, (17883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:36,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 17883 transitions. [2021-06-05 08:10:36,118 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 17883 transitions. Word has length 190 [2021-06-05 08:10:36,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:10:36,118 INFO L482 AbstractCegarLoop]: Abstraction has 6328 states and 17883 transitions. [2021-06-05 08:10:36,118 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:36,118 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 17883 transitions. [2021-06-05 08:10:36,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:10:36,124 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:10:36,124 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:10:36,340 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable505,501 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:10:36,340 INFO L430 AbstractCegarLoop]: === Iteration 507 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:10:36,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:10:36,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1308279279, now seen corresponding path program 498 times [2021-06-05 08:10:36,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:10:36,340 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133043892] [2021-06-05 08:10:36,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:10:36,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:10:36,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:36,829 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:10:36,829 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133043892] [2021-06-05 08:10:36,829 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133043892] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:36,829 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554117507] [2021-06-05 08:10:36,829 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 502 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 502 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:10:36,942 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2021-06-05 08:10:36,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:10:36,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 08:10:36,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:10:37,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:37,187 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554117507] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:37,187 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:10:37,187 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 38 [2021-06-05 08:10:37,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709680697] [2021-06-05 08:10:37,187 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 08:10:37,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:10:37,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 08:10:37,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=1151, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 08:10:37,188 INFO L87 Difference]: Start difference. First operand 6328 states and 17883 transitions. Second operand has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:38,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:10:38,187 INFO L93 Difference]: Finished difference Result 8721 states and 22797 transitions. [2021-06-05 08:10:38,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 08:10:38,188 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:10:38,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:10:38,198 INFO L225 Difference]: With dead ends: 8721 [2021-06-05 08:10:38,198 INFO L226 Difference]: Without dead ends: 8451 [2021-06-05 08:10:38,199 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1250 ImplicationChecksByTransitivity, 1209.6ms TimeCoverageRelationStatistics Valid=1526, Invalid=4636, Unknown=0, NotChecked=0, Total=6162 [2021-06-05 08:10:38,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8451 states. [2021-06-05 08:10:38,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8451 to 6328. [2021-06-05 08:10:38,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 6327 states have (on average 2.8264580369843526) internal successors, (17883), 6327 states have internal predecessors, (17883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:38,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 17883 transitions. [2021-06-05 08:10:38,284 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 17883 transitions. Word has length 190 [2021-06-05 08:10:38,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:10:38,284 INFO L482 AbstractCegarLoop]: Abstraction has 6328 states and 17883 transitions. [2021-06-05 08:10:38,284 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:38,284 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 17883 transitions. [2021-06-05 08:10:38,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:10:38,290 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:10:38,290 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:10:38,506 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 502 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable506 [2021-06-05 08:10:38,506 INFO L430 AbstractCegarLoop]: === Iteration 508 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:10:38,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:10:38,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1809593119, now seen corresponding path program 499 times [2021-06-05 08:10:38,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:10:38,506 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086710380] [2021-06-05 08:10:38,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:10:38,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:10:38,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:38,950 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:10:38,950 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086710380] [2021-06-05 08:10:38,950 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086710380] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:38,950 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344689152] [2021-06-05 08:10:38,950 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 503 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 503 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:10:39,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:10:39,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 08:10:39,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:10:39,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:39,376 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344689152] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:39,376 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:10:39,376 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2021-06-05 08:10:39,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312910693] [2021-06-05 08:10:39,376 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 08:10:39,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:10:39,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 08:10:39,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=1236, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 08:10:39,377 INFO L87 Difference]: Start difference. First operand 6328 states and 17883 transitions. Second operand has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:40,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:10:40,539 INFO L93 Difference]: Finished difference Result 8671 states and 22697 transitions. [2021-06-05 08:10:40,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 08:10:40,539 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:10:40,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:10:40,550 INFO L225 Difference]: With dead ends: 8671 [2021-06-05 08:10:40,550 INFO L226 Difference]: Without dead ends: 8401 [2021-06-05 08:10:40,551 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1387 ImplicationChecksByTransitivity, 1297.1ms TimeCoverageRelationStatistics Valid=1643, Invalid=5163, Unknown=0, NotChecked=0, Total=6806 [2021-06-05 08:10:40,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8401 states. [2021-06-05 08:10:40,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8401 to 6328. [2021-06-05 08:10:40,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 6327 states have (on average 2.8264580369843526) internal successors, (17883), 6327 states have internal predecessors, (17883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:40,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 17883 transitions. [2021-06-05 08:10:40,633 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 17883 transitions. Word has length 190 [2021-06-05 08:10:40,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:10:40,633 INFO L482 AbstractCegarLoop]: Abstraction has 6328 states and 17883 transitions. [2021-06-05 08:10:40,633 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:40,633 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 17883 transitions. [2021-06-05 08:10:40,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:10:40,638 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:10:40,638 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:10:40,853 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 503 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable507 [2021-06-05 08:10:40,853 INFO L430 AbstractCegarLoop]: === Iteration 509 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:10:40,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:10:40,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1333097777, now seen corresponding path program 500 times [2021-06-05 08:10:40,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:10:40,853 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481073439] [2021-06-05 08:10:40,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:10:40,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:10:41,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:41,272 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:10:41,272 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481073439] [2021-06-05 08:10:41,272 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481073439] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:41,272 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60527695] [2021-06-05 08:10:41,272 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 504 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 504 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:10:41,347 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:10:41,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:10:41,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 08:10:41,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:10:41,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:41,575 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60527695] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:41,575 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:10:41,575 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 38 [2021-06-05 08:10:41,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787397107] [2021-06-05 08:10:41,575 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 08:10:41,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:10:41,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 08:10:41,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=1168, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 08:10:41,575 INFO L87 Difference]: Start difference. First operand 6328 states and 17883 transitions. Second operand has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:42,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:10:42,839 INFO L93 Difference]: Finished difference Result 8621 states and 22597 transitions. [2021-06-05 08:10:42,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 08:10:42,839 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:10:42,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:10:42,849 INFO L225 Difference]: With dead ends: 8621 [2021-06-05 08:10:42,849 INFO L226 Difference]: Without dead ends: 8351 [2021-06-05 08:10:42,850 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1365 ImplicationChecksByTransitivity, 1323.3ms TimeCoverageRelationStatistics Valid=1566, Invalid=4914, Unknown=0, NotChecked=0, Total=6480 [2021-06-05 08:10:42,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8351 states. [2021-06-05 08:10:42,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8351 to 6328. [2021-06-05 08:10:42,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 6327 states have (on average 2.8264580369843526) internal successors, (17883), 6327 states have internal predecessors, (17883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:42,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 17883 transitions. [2021-06-05 08:10:42,939 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 17883 transitions. Word has length 190 [2021-06-05 08:10:42,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:10:42,939 INFO L482 AbstractCegarLoop]: Abstraction has 6328 states and 17883 transitions. [2021-06-05 08:10:42,940 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:42,940 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 17883 transitions. [2021-06-05 08:10:42,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:10:42,945 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:10:42,945 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:10:43,161 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable508,504 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:10:43,161 INFO L430 AbstractCegarLoop]: === Iteration 510 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:10:43,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:10:43,161 INFO L82 PathProgramCache]: Analyzing trace with hash 133586335, now seen corresponding path program 501 times [2021-06-05 08:10:43,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:10:43,163 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071603289] [2021-06-05 08:10:43,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:10:43,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:10:43,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:43,617 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:10:43,617 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071603289] [2021-06-05 08:10:43,617 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071603289] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:43,617 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889303372] [2021-06-05 08:10:43,617 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 505 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 505 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:10:43,712 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2021-06-05 08:10:43,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:10:43,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 61 conjunts are in the unsatisfiable core [2021-06-05 08:10:43,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:10:43,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:43,954 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889303372] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:43,954 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:10:43,954 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2021-06-05 08:10:43,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787742814] [2021-06-05 08:10:43,955 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 08:10:43,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:10:43,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 08:10:43,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=1252, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 08:10:43,955 INFO L87 Difference]: Start difference. First operand 6328 states and 17883 transitions. Second operand has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:45,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:10:45,074 INFO L93 Difference]: Finished difference Result 8571 states and 22497 transitions. [2021-06-05 08:10:45,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 08:10:45,075 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:10:45,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:10:45,084 INFO L225 Difference]: With dead ends: 8571 [2021-06-05 08:10:45,084 INFO L226 Difference]: Without dead ends: 8301 [2021-06-05 08:10:45,085 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1391 ImplicationChecksByTransitivity, 1293.4ms TimeCoverageRelationStatistics Valid=1569, Invalid=5237, Unknown=0, NotChecked=0, Total=6806 [2021-06-05 08:10:45,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8301 states. [2021-06-05 08:10:45,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8301 to 6328. [2021-06-05 08:10:45,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 6327 states have (on average 2.8264580369843526) internal successors, (17883), 6327 states have internal predecessors, (17883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:45,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 17883 transitions. [2021-06-05 08:10:45,165 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 17883 transitions. Word has length 190 [2021-06-05 08:10:45,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:10:45,165 INFO L482 AbstractCegarLoop]: Abstraction has 6328 states and 17883 transitions. [2021-06-05 08:10:45,165 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:45,166 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 17883 transitions. [2021-06-05 08:10:45,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:10:45,171 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:10:45,171 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:10:45,371 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable509,505 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:10:45,371 INFO L430 AbstractCegarLoop]: === Iteration 511 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:10:45,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:10:45,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1635059, now seen corresponding path program 502 times [2021-06-05 08:10:45,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:10:45,372 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369130705] [2021-06-05 08:10:45,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:10:45,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:10:45,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:45,783 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:10:45,783 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369130705] [2021-06-05 08:10:45,783 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369130705] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:45,783 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919547965] [2021-06-05 08:10:45,784 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 506 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 506 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:10:45,858 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:10:45,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:10:45,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 08:10:45,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:10:46,100 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:46,100 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919547965] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:46,100 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:10:46,100 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 38 [2021-06-05 08:10:46,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711089108] [2021-06-05 08:10:46,100 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 08:10:46,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:10:46,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 08:10:46,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=1181, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 08:10:46,101 INFO L87 Difference]: Start difference. First operand 6328 states and 17883 transitions. Second operand has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:47,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:10:47,167 INFO L93 Difference]: Finished difference Result 8521 states and 22397 transitions. [2021-06-05 08:10:47,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 08:10:47,167 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:10:47,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:10:47,176 INFO L225 Difference]: With dead ends: 8521 [2021-06-05 08:10:47,176 INFO L226 Difference]: Without dead ends: 8251 [2021-06-05 08:10:47,177 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1484 ImplicationChecksByTransitivity, 1194.0ms TimeCoverageRelationStatistics Valid=1622, Invalid=5184, Unknown=0, NotChecked=0, Total=6806 [2021-06-05 08:10:47,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8251 states. [2021-06-05 08:10:47,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8251 to 6328. [2021-06-05 08:10:47,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 6327 states have (on average 2.8264580369843526) internal successors, (17883), 6327 states have internal predecessors, (17883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:47,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 17883 transitions. [2021-06-05 08:10:47,260 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 17883 transitions. Word has length 190 [2021-06-05 08:10:47,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:10:47,261 INFO L482 AbstractCegarLoop]: Abstraction has 6328 states and 17883 transitions. [2021-06-05 08:10:47,261 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:47,261 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 17883 transitions. [2021-06-05 08:10:47,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:10:47,266 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:10:47,266 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:10:47,466 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 506 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable510 [2021-06-05 08:10:47,466 INFO L430 AbstractCegarLoop]: === Iteration 512 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:10:47,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:10:47,467 INFO L82 PathProgramCache]: Analyzing trace with hash -878369827, now seen corresponding path program 503 times [2021-06-05 08:10:47,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:10:47,467 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073005379] [2021-06-05 08:10:47,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:10:47,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:10:47,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:47,918 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:10:47,918 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073005379] [2021-06-05 08:10:47,919 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073005379] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:47,919 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293912000] [2021-06-05 08:10:47,919 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 507 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 507 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:10:48,012 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2021-06-05 08:10:48,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:10:48,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 08:10:48,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:10:48,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:48,307 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293912000] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:48,307 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:10:48,307 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2021-06-05 08:10:48,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802680656] [2021-06-05 08:10:48,308 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 08:10:48,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:10:48,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 08:10:48,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=1264, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 08:10:48,308 INFO L87 Difference]: Start difference. First operand 6328 states and 17883 transitions. Second operand has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:49,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:10:49,567 INFO L93 Difference]: Finished difference Result 8471 states and 22297 transitions. [2021-06-05 08:10:49,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-05 08:10:49,567 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:10:49,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:10:49,577 INFO L225 Difference]: With dead ends: 8471 [2021-06-05 08:10:49,577 INFO L226 Difference]: Without dead ends: 8201 [2021-06-05 08:10:49,578 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1635 ImplicationChecksByTransitivity, 1412.0ms TimeCoverageRelationStatistics Valid=1755, Invalid=5727, Unknown=0, NotChecked=0, Total=7482 [2021-06-05 08:10:49,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8201 states. [2021-06-05 08:10:49,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8201 to 6328. [2021-06-05 08:10:49,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 6327 states have (on average 2.8264580369843526) internal successors, (17883), 6327 states have internal predecessors, (17883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:49,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 17883 transitions. [2021-06-05 08:10:49,660 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 17883 transitions. Word has length 190 [2021-06-05 08:10:49,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:10:49,660 INFO L482 AbstractCegarLoop]: Abstraction has 6328 states and 17883 transitions. [2021-06-05 08:10:49,660 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:49,660 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 17883 transitions. [2021-06-05 08:10:49,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:10:49,666 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:10:49,666 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:10:49,884 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 507 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable511 [2021-06-05 08:10:49,885 INFO L430 AbstractCegarLoop]: === Iteration 513 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:10:49,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:10:49,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1679271115, now seen corresponding path program 504 times [2021-06-05 08:10:49,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:10:49,885 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564953555] [2021-06-05 08:10:49,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:10:49,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:10:50,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:50,305 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:10:50,305 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564953555] [2021-06-05 08:10:50,305 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564953555] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:50,305 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530657101] [2021-06-05 08:10:50,305 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 508 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 508 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:10:50,398 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2021-06-05 08:10:50,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:10:50,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 08:10:50,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:10:50,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:50,636 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530657101] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:50,636 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:10:50,636 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 38 [2021-06-05 08:10:50,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341560794] [2021-06-05 08:10:50,637 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 08:10:50,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:10:50,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 08:10:50,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=1190, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 08:10:50,637 INFO L87 Difference]: Start difference. First operand 6328 states and 17883 transitions. Second operand has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:51,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:10:51,858 INFO L93 Difference]: Finished difference Result 8421 states and 22197 transitions. [2021-06-05 08:10:51,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 08:10:51,858 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:10:51,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:10:51,866 INFO L225 Difference]: With dead ends: 8421 [2021-06-05 08:10:51,867 INFO L226 Difference]: Without dead ends: 8151 [2021-06-05 08:10:51,867 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1607 ImplicationChecksByTransitivity, 1303.9ms TimeCoverageRelationStatistics Valid=1694, Invalid=5446, Unknown=0, NotChecked=0, Total=7140 [2021-06-05 08:10:51,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8151 states. [2021-06-05 08:10:51,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8151 to 6328. [2021-06-05 08:10:51,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 6327 states have (on average 2.8264580369843526) internal successors, (17883), 6327 states have internal predecessors, (17883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:51,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 17883 transitions. [2021-06-05 08:10:51,943 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 17883 transitions. Word has length 190 [2021-06-05 08:10:51,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:10:51,943 INFO L482 AbstractCegarLoop]: Abstraction has 6328 states and 17883 transitions. [2021-06-05 08:10:51,943 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:51,943 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 17883 transitions. [2021-06-05 08:10:51,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:10:51,949 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:10:51,949 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:10:52,165 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable512,508 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:10:52,165 INFO L430 AbstractCegarLoop]: === Iteration 514 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:10:52,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:10:52,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1251147877, now seen corresponding path program 505 times [2021-06-05 08:10:52,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:10:52,165 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153837319] [2021-06-05 08:10:52,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:10:52,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:10:52,570 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:52,571 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:10:52,571 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153837319] [2021-06-05 08:10:52,571 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153837319] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:52,571 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762817562] [2021-06-05 08:10:52,571 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 509 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 509 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:10:52,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:10:52,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 08:10:52,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:10:52,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:52,886 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762817562] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:52,886 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:10:52,886 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2021-06-05 08:10:52,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322062287] [2021-06-05 08:10:52,886 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 08:10:52,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:10:52,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 08:10:52,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=1272, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 08:10:52,886 INFO L87 Difference]: Start difference. First operand 6328 states and 17883 transitions. Second operand has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:54,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:10:54,164 INFO L93 Difference]: Finished difference Result 8371 states and 22097 transitions. [2021-06-05 08:10:54,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-05 08:10:54,164 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:10:54,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:10:54,174 INFO L225 Difference]: With dead ends: 8371 [2021-06-05 08:10:54,174 INFO L226 Difference]: Without dead ends: 8101 [2021-06-05 08:10:54,175 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1765 ImplicationChecksByTransitivity, 1341.8ms TimeCoverageRelationStatistics Valid=1835, Invalid=5997, Unknown=0, NotChecked=0, Total=7832 [2021-06-05 08:10:54,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8101 states. [2021-06-05 08:10:54,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8101 to 6328. [2021-06-05 08:10:54,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 6327 states have (on average 2.8264580369843526) internal successors, (17883), 6327 states have internal predecessors, (17883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:54,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 17883 transitions. [2021-06-05 08:10:54,266 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 17883 transitions. Word has length 190 [2021-06-05 08:10:54,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:10:54,266 INFO L482 AbstractCegarLoop]: Abstraction has 6328 states and 17883 transitions. [2021-06-05 08:10:54,266 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:54,266 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 17883 transitions. [2021-06-05 08:10:54,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:10:54,272 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:10:54,272 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:10:54,487 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 509 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable513 [2021-06-05 08:10:54,488 INFO L430 AbstractCegarLoop]: === Iteration 515 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:10:54,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:10:54,488 INFO L82 PathProgramCache]: Analyzing trace with hash 766587401, now seen corresponding path program 506 times [2021-06-05 08:10:54,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:10:54,488 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824687491] [2021-06-05 08:10:54,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:10:54,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:10:54,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:54,916 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:10:54,916 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824687491] [2021-06-05 08:10:54,916 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824687491] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:54,916 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95515288] [2021-06-05 08:10:54,916 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 510 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 510 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:10:54,991 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:10:54,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:10:54,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 08:10:54,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:10:55,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:55,307 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95515288] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:55,307 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:10:55,307 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 38 [2021-06-05 08:10:55,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545048530] [2021-06-05 08:10:55,307 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 08:10:55,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:10:55,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 08:10:55,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=1195, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 08:10:55,307 INFO L87 Difference]: Start difference. First operand 6328 states and 17883 transitions. Second operand has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:56,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:10:56,504 INFO L93 Difference]: Finished difference Result 8321 states and 21997 transitions. [2021-06-05 08:10:56,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 08:10:56,504 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:10:56,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:10:56,514 INFO L225 Difference]: With dead ends: 8321 [2021-06-05 08:10:56,514 INFO L226 Difference]: Without dead ends: 8051 [2021-06-05 08:10:56,514 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1734 ImplicationChecksByTransitivity, 1306.0ms TimeCoverageRelationStatistics Valid=1782, Invalid=5700, Unknown=0, NotChecked=0, Total=7482 [2021-06-05 08:10:56,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8051 states. [2021-06-05 08:10:56,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8051 to 6328. [2021-06-05 08:10:56,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 6327 states have (on average 2.8264580369843526) internal successors, (17883), 6327 states have internal predecessors, (17883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:56,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 17883 transitions. [2021-06-05 08:10:56,600 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 17883 transitions. Word has length 190 [2021-06-05 08:10:56,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:10:56,600 INFO L482 AbstractCegarLoop]: Abstraction has 6328 states and 17883 transitions. [2021-06-05 08:10:56,601 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:56,601 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 17883 transitions. [2021-06-05 08:10:56,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:10:56,606 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:10:56,606 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:10:56,822 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 510 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable514 [2021-06-05 08:10:56,822 INFO L430 AbstractCegarLoop]: === Iteration 516 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:10:56,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:10:56,822 INFO L82 PathProgramCache]: Analyzing trace with hash -131936039, now seen corresponding path program 507 times [2021-06-05 08:10:56,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:10:56,822 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292999627] [2021-06-05 08:10:56,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:10:56,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:10:57,225 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:57,225 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:10:57,225 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292999627] [2021-06-05 08:10:57,225 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292999627] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:57,225 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25631230] [2021-06-05 08:10:57,225 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 511 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 511 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:10:57,322 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2021-06-05 08:10:57,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:10:57,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 55 conjunts are in the unsatisfiable core [2021-06-05 08:10:57,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:10:57,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:57,576 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25631230] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:57,576 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:10:57,576 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2021-06-05 08:10:57,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068098324] [2021-06-05 08:10:57,576 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 08:10:57,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:10:57,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 08:10:57,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=1276, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 08:10:57,577 INFO L87 Difference]: Start difference. First operand 6328 states and 17883 transitions. Second operand has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:58,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:10:58,835 INFO L93 Difference]: Finished difference Result 8271 states and 21897 transitions. [2021-06-05 08:10:58,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-05 08:10:58,835 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:10:58,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:10:58,844 INFO L225 Difference]: With dead ends: 8271 [2021-06-05 08:10:58,844 INFO L226 Difference]: Without dead ends: 8001 [2021-06-05 08:10:58,845 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1757 ImplicationChecksByTransitivity, 1300.3ms TimeCoverageRelationStatistics Valid=1746, Invalid=6086, Unknown=0, NotChecked=0, Total=7832 [2021-06-05 08:10:58,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8001 states. [2021-06-05 08:10:58,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8001 to 6328. [2021-06-05 08:10:58,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 6327 states have (on average 2.8264580369843526) internal successors, (17883), 6327 states have internal predecessors, (17883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:58,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 17883 transitions. [2021-06-05 08:10:58,968 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 17883 transitions. Word has length 190 [2021-06-05 08:10:58,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:10:58,969 INFO L482 AbstractCegarLoop]: Abstraction has 6328 states and 17883 transitions. [2021-06-05 08:10:58,969 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:10:58,969 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 17883 transitions. [2021-06-05 08:10:58,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:10:58,974 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:10:58,974 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:10:59,190 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable515,511 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:10:59,190 INFO L430 AbstractCegarLoop]: === Iteration 517 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:10:59,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:10:59,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1746889529, now seen corresponding path program 508 times [2021-06-05 08:10:59,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:10:59,191 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416831594] [2021-06-05 08:10:59,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:10:59,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:10:59,572 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:59,572 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:10:59,572 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416831594] [2021-06-05 08:10:59,572 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416831594] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:59,572 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727830739] [2021-06-05 08:10:59,572 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 512 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 512 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:10:59,648 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:10:59,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:10:59,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 08:10:59,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:10:59,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:10:59,871 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727830739] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:10:59,871 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:10:59,871 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 38 [2021-06-05 08:10:59,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515919098] [2021-06-05 08:10:59,871 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 08:10:59,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:10:59,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 08:10:59,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=1196, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 08:10:59,872 INFO L87 Difference]: Start difference. First operand 6328 states and 17883 transitions. Second operand has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:01,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:11:01,009 INFO L93 Difference]: Finished difference Result 8221 states and 21797 transitions. [2021-06-05 08:11:01,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-05 08:11:01,009 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:11:01,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:11:01,018 INFO L225 Difference]: With dead ends: 8221 [2021-06-05 08:11:01,018 INFO L226 Difference]: Without dead ends: 7951 [2021-06-05 08:11:01,019 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1865 ImplicationChecksByTransitivity, 1171.5ms TimeCoverageRelationStatistics Valid=1886, Invalid=5946, Unknown=0, NotChecked=0, Total=7832 [2021-06-05 08:11:01,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7951 states. [2021-06-05 08:11:01,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7951 to 6328. [2021-06-05 08:11:01,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 6327 states have (on average 2.8264580369843526) internal successors, (17883), 6327 states have internal predecessors, (17883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:01,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 17883 transitions. [2021-06-05 08:11:01,098 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 17883 transitions. Word has length 190 [2021-06-05 08:11:01,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:11:01,098 INFO L482 AbstractCegarLoop]: Abstraction has 6328 states and 17883 transitions. [2021-06-05 08:11:01,098 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:01,098 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 17883 transitions. [2021-06-05 08:11:01,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:11:01,103 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:11:01,103 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:11:01,319 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 512 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable516 [2021-06-05 08:11:01,320 INFO L430 AbstractCegarLoop]: === Iteration 518 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:11:01,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:11:01,320 INFO L82 PathProgramCache]: Analyzing trace with hash -2127333481, now seen corresponding path program 509 times [2021-06-05 08:11:01,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:11:01,320 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561536412] [2021-06-05 08:11:01,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:11:01,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:11:01,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:11:01,716 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:11:01,716 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561536412] [2021-06-05 08:11:01,716 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561536412] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:11:01,716 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618756077] [2021-06-05 08:11:01,716 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 513 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 513 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:11:01,797 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2021-06-05 08:11:01,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:11:01,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 08:11:01,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:11:02,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:11:02,033 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618756077] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:11:02,033 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:11:02,033 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2021-06-05 08:11:02,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754373087] [2021-06-05 08:11:02,033 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 08:11:02,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:11:02,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 08:11:02,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=1276, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 08:11:02,033 INFO L87 Difference]: Start difference. First operand 6328 states and 17883 transitions. Second operand has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:03,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:11:03,498 INFO L93 Difference]: Finished difference Result 8171 states and 21697 transitions. [2021-06-05 08:11:03,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-05 08:11:03,498 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:11:03,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:11:03,507 INFO L225 Difference]: With dead ends: 8171 [2021-06-05 08:11:03,508 INFO L226 Difference]: Without dead ends: 7901 [2021-06-05 08:11:03,508 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2037 ImplicationChecksByTransitivity, 1527.9ms TimeCoverageRelationStatistics Valid=2043, Invalid=6513, Unknown=0, NotChecked=0, Total=8556 [2021-06-05 08:11:03,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7901 states. [2021-06-05 08:11:03,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7901 to 6328. [2021-06-05 08:11:03,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 6327 states have (on average 2.8264580369843526) internal successors, (17883), 6327 states have internal predecessors, (17883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:03,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 17883 transitions. [2021-06-05 08:11:03,590 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 17883 transitions. Word has length 190 [2021-06-05 08:11:03,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:11:03,590 INFO L482 AbstractCegarLoop]: Abstraction has 6328 states and 17883 transitions. [2021-06-05 08:11:03,590 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:03,590 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 17883 transitions. [2021-06-05 08:11:03,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:11:03,596 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:11:03,596 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:11:03,809 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable517,513 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:11:03,809 INFO L430 AbstractCegarLoop]: === Iteration 519 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:11:03,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:11:03,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1502958331, now seen corresponding path program 510 times [2021-06-05 08:11:03,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:11:03,809 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143361181] [2021-06-05 08:11:03,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:11:03,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:11:04,170 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:11:04,171 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:11:04,171 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143361181] [2021-06-05 08:11:04,171 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143361181] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:11:04,171 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214212926] [2021-06-05 08:11:04,171 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 514 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 514 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:11:04,261 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2021-06-05 08:11:04,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:11:04,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 08:11:04,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:11:04,512 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:11:04,513 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214212926] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:11:04,513 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:11:04,513 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 38 [2021-06-05 08:11:04,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081034997] [2021-06-05 08:11:04,513 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 08:11:04,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:11:04,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 08:11:04,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=1193, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 08:11:04,513 INFO L87 Difference]: Start difference. First operand 6328 states and 17883 transitions. Second operand has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:05,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:11:05,847 INFO L93 Difference]: Finished difference Result 8121 states and 21597 transitions. [2021-06-05 08:11:05,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-05 08:11:05,847 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:11:05,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:11:05,856 INFO L225 Difference]: With dead ends: 8121 [2021-06-05 08:11:05,857 INFO L226 Difference]: Without dead ends: 7851 [2021-06-05 08:11:05,857 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2000 ImplicationChecksByTransitivity, 1222.1ms TimeCoverageRelationStatistics Valid=2006, Invalid=6184, Unknown=0, NotChecked=0, Total=8190 [2021-06-05 08:11:05,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7851 states. [2021-06-05 08:11:05,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7851 to 6328. [2021-06-05 08:11:05,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 6327 states have (on average 2.8264580369843526) internal successors, (17883), 6327 states have internal predecessors, (17883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:06,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 17883 transitions. [2021-06-05 08:11:06,009 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 17883 transitions. Word has length 190 [2021-06-05 08:11:06,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:11:06,009 INFO L482 AbstractCegarLoop]: Abstraction has 6328 states and 17883 transitions. [2021-06-05 08:11:06,009 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:06,009 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 17883 transitions. [2021-06-05 08:11:06,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:11:06,015 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:11:06,015 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:11:06,221 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable518,514 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:11:06,221 INFO L430 AbstractCegarLoop]: === Iteration 520 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:11:06,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:11:06,221 INFO L82 PathProgramCache]: Analyzing trace with hash -693906475, now seen corresponding path program 511 times [2021-06-05 08:11:06,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:11:06,221 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591385981] [2021-06-05 08:11:06,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:11:06,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:11:06,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:11:06,637 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:11:06,637 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591385981] [2021-06-05 08:11:06,637 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591385981] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:11:06,637 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494959320] [2021-06-05 08:11:06,638 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 515 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 515 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:11:06,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:11:06,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 08:11:06,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:11:06,952 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:11:06,952 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494959320] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:11:06,952 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:11:06,953 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2021-06-05 08:11:06,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877264291] [2021-06-05 08:11:06,953 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 08:11:06,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:11:06,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 08:11:06,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=1272, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 08:11:06,953 INFO L87 Difference]: Start difference. First operand 6328 states and 17883 transitions. Second operand has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:08,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:11:08,474 INFO L93 Difference]: Finished difference Result 8071 states and 21497 transitions. [2021-06-05 08:11:08,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-06-05 08:11:08,474 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:11:08,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:11:08,484 INFO L225 Difference]: With dead ends: 8071 [2021-06-05 08:11:08,484 INFO L226 Difference]: Without dead ends: 7801 [2021-06-05 08:11:08,485 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2179 ImplicationChecksByTransitivity, 1481.3ms TimeCoverageRelationStatistics Valid=2171, Invalid=6759, Unknown=0, NotChecked=0, Total=8930 [2021-06-05 08:11:08,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7801 states. [2021-06-05 08:11:08,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7801 to 6328. [2021-06-05 08:11:08,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 6327 states have (on average 2.8264580369843526) internal successors, (17883), 6327 states have internal predecessors, (17883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:08,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 17883 transitions. [2021-06-05 08:11:08,570 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 17883 transitions. Word has length 190 [2021-06-05 08:11:08,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:11:08,570 INFO L482 AbstractCegarLoop]: Abstraction has 6328 states and 17883 transitions. [2021-06-05 08:11:08,570 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:08,570 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 17883 transitions. [2021-06-05 08:11:08,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:11:08,576 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:11:08,576 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:11:08,792 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable519,515 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:11:08,792 INFO L430 AbstractCegarLoop]: === Iteration 521 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:11:08,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:11:08,792 INFO L82 PathProgramCache]: Analyzing trace with hash -2085856573, now seen corresponding path program 512 times [2021-06-05 08:11:08,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:11:08,792 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291559580] [2021-06-05 08:11:08,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:11:08,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:11:09,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:11:09,149 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:11:09,149 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291559580] [2021-06-05 08:11:09,149 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291559580] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:11:09,149 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112350050] [2021-06-05 08:11:09,149 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 516 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 516 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:11:09,224 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:11:09,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:11:09,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 08:11:09,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:11:09,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:11:09,440 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112350050] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:11:09,440 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:11:09,441 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 38 [2021-06-05 08:11:09,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582894259] [2021-06-05 08:11:09,441 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 08:11:09,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:11:09,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 08:11:09,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=1186, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 08:11:09,441 INFO L87 Difference]: Start difference. First operand 6328 states and 17883 transitions. Second operand has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:10,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:11:10,873 INFO L93 Difference]: Finished difference Result 8021 states and 21397 transitions. [2021-06-05 08:11:10,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-06-05 08:11:10,874 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:11:10,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:11:10,883 INFO L225 Difference]: With dead ends: 8021 [2021-06-05 08:11:10,883 INFO L226 Difference]: Without dead ends: 7751 [2021-06-05 08:11:10,884 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2139 ImplicationChecksByTransitivity, 1286.8ms TimeCoverageRelationStatistics Valid=2142, Invalid=6414, Unknown=0, NotChecked=0, Total=8556 [2021-06-05 08:11:10,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7751 states. [2021-06-05 08:11:10,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7751 to 6328. [2021-06-05 08:11:10,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 6327 states have (on average 2.8264580369843526) internal successors, (17883), 6327 states have internal predecessors, (17883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:10,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 17883 transitions. [2021-06-05 08:11:10,967 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 17883 transitions. Word has length 190 [2021-06-05 08:11:10,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:11:10,967 INFO L482 AbstractCegarLoop]: Abstraction has 6328 states and 17883 transitions. [2021-06-05 08:11:10,967 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:10,967 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 17883 transitions. [2021-06-05 08:11:10,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:11:10,972 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:11:10,972 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:11:11,185 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 516 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable520 [2021-06-05 08:11:11,185 INFO L430 AbstractCegarLoop]: === Iteration 522 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:11:11,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:11:11,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1964033427, now seen corresponding path program 513 times [2021-06-05 08:11:11,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:11:11,185 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337087435] [2021-06-05 08:11:11,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:11:11,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:11:11,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:11:11,550 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:11:11,550 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337087435] [2021-06-05 08:11:11,550 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337087435] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:11:11,551 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765384427] [2021-06-05 08:11:11,551 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 517 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 517 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:11:11,654 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2021-06-05 08:11:11,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:11:11,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 49 conjunts are in the unsatisfiable core [2021-06-05 08:11:11,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:11:11,888 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:11:11,889 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765384427] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:11:11,889 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:11:11,889 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2021-06-05 08:11:11,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713835099] [2021-06-05 08:11:11,889 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 08:11:11,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:11:11,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 08:11:11,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=1264, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 08:11:11,889 INFO L87 Difference]: Start difference. First operand 6328 states and 17883 transitions. Second operand has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:13,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:11:13,496 INFO L93 Difference]: Finished difference Result 7971 states and 21297 transitions. [2021-06-05 08:11:13,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-06-05 08:11:13,496 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:11:13,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:11:13,503 INFO L225 Difference]: With dead ends: 7971 [2021-06-05 08:11:13,504 INFO L226 Difference]: Without dead ends: 7701 [2021-06-05 08:11:13,504 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2150 ImplicationChecksByTransitivity, 1617.5ms TimeCoverageRelationStatistics Valid=2040, Invalid=6890, Unknown=0, NotChecked=0, Total=8930 [2021-06-05 08:11:13,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7701 states. [2021-06-05 08:11:13,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7701 to 6328. [2021-06-05 08:11:13,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 6327 states have (on average 2.8264580369843526) internal successors, (17883), 6327 states have internal predecessors, (17883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:13,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 17883 transitions. [2021-06-05 08:11:13,583 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 17883 transitions. Word has length 190 [2021-06-05 08:11:13,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:11:13,583 INFO L482 AbstractCegarLoop]: Abstraction has 6328 states and 17883 transitions. [2021-06-05 08:11:13,583 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:13,583 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 17883 transitions. [2021-06-05 08:11:13,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:11:13,589 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:11:13,589 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:11:13,801 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 517 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable521 [2021-06-05 08:11:13,801 INFO L430 AbstractCegarLoop]: === Iteration 523 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:11:13,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:11:13,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1587183105, now seen corresponding path program 514 times [2021-06-05 08:11:13,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:11:13,801 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994585293] [2021-06-05 08:11:13,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:11:13,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:11:14,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:11:14,253 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:11:14,253 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994585293] [2021-06-05 08:11:14,254 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994585293] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:11:14,254 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771489716] [2021-06-05 08:11:14,254 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 518 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 518 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:11:14,337 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:11:14,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:11:14,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 08:11:14,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:11:14,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:11:14,551 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771489716] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:11:14,551 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:11:14,551 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 38 [2021-06-05 08:11:14,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617080652] [2021-06-05 08:11:14,551 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 08:11:14,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:11:14,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 08:11:14,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=1175, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 08:11:14,552 INFO L87 Difference]: Start difference. First operand 6328 states and 17883 transitions. Second operand has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:15,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:11:15,820 INFO L93 Difference]: Finished difference Result 7921 states and 21197 transitions. [2021-06-05 08:11:15,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-05 08:11:15,820 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:11:15,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:11:15,829 INFO L225 Difference]: With dead ends: 7921 [2021-06-05 08:11:15,829 INFO L226 Difference]: Without dead ends: 7651 [2021-06-05 08:11:15,830 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2282 ImplicationChecksByTransitivity, 1345.5ms TimeCoverageRelationStatistics Valid=2294, Invalid=6636, Unknown=0, NotChecked=0, Total=8930 [2021-06-05 08:11:15,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7651 states. [2021-06-05 08:11:15,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7651 to 6328. [2021-06-05 08:11:15,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 6327 states have (on average 2.8264580369843526) internal successors, (17883), 6327 states have internal predecessors, (17883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:15,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 17883 transitions. [2021-06-05 08:11:15,912 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 17883 transitions. Word has length 190 [2021-06-05 08:11:15,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:11:15,912 INFO L482 AbstractCegarLoop]: Abstraction has 6328 states and 17883 transitions. [2021-06-05 08:11:15,912 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:15,912 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 17883 transitions. [2021-06-05 08:11:15,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:11:15,917 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:11:15,918 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:11:16,133 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable522,518 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:11:16,133 INFO L430 AbstractCegarLoop]: === Iteration 524 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:11:16,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:11:16,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1381028655, now seen corresponding path program 515 times [2021-06-05 08:11:16,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:11:16,133 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753835664] [2021-06-05 08:11:16,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:11:16,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:11:16,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:11:16,494 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:11:16,494 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753835664] [2021-06-05 08:11:16,494 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753835664] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:11:16,494 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766720089] [2021-06-05 08:11:16,494 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 519 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 519 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:11:16,576 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2021-06-05 08:11:16,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:11:16,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 08:11:16,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:11:16,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:11:16,808 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766720089] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:11:16,808 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:11:16,808 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2021-06-05 08:11:16,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210945843] [2021-06-05 08:11:16,808 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 08:11:16,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:11:16,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 08:11:16,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=1252, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 08:11:16,809 INFO L87 Difference]: Start difference. First operand 6328 states and 17883 transitions. Second operand has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:18,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:11:18,516 INFO L93 Difference]: Finished difference Result 7871 states and 21097 transitions. [2021-06-05 08:11:18,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-05 08:11:18,516 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:11:18,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:11:18,526 INFO L225 Difference]: With dead ends: 7871 [2021-06-05 08:11:18,526 INFO L226 Difference]: Without dead ends: 7601 [2021-06-05 08:11:18,527 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2475 ImplicationChecksByTransitivity, 1645.4ms TimeCoverageRelationStatistics Valid=2475, Invalid=7227, Unknown=0, NotChecked=0, Total=9702 [2021-06-05 08:11:18,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7601 states. [2021-06-05 08:11:18,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7601 to 6328. [2021-06-05 08:11:18,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 6327 states have (on average 2.8264580369843526) internal successors, (17883), 6327 states have internal predecessors, (17883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:18,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 17883 transitions. [2021-06-05 08:11:18,613 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 17883 transitions. Word has length 190 [2021-06-05 08:11:18,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:11:18,613 INFO L482 AbstractCegarLoop]: Abstraction has 6328 states and 17883 transitions. [2021-06-05 08:11:18,613 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:18,614 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 17883 transitions. [2021-06-05 08:11:18,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:11:18,619 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:11:18,619 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:11:18,835 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 519 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable523 [2021-06-05 08:11:18,836 INFO L430 AbstractCegarLoop]: === Iteration 525 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:11:18,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:11:18,836 INFO L82 PathProgramCache]: Analyzing trace with hash -926812481, now seen corresponding path program 516 times [2021-06-05 08:11:18,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:11:18,836 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726222678] [2021-06-05 08:11:18,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:11:18,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:11:19,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:11:19,213 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:11:19,213 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726222678] [2021-06-05 08:11:19,213 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726222678] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:11:19,213 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081369233] [2021-06-05 08:11:19,213 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 520 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 520 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:11:19,313 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2021-06-05 08:11:19,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:11:19,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 45 conjunts are in the unsatisfiable core [2021-06-05 08:11:19,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:11:19,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:11:19,524 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081369233] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:11:19,524 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:11:19,524 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 38 [2021-06-05 08:11:19,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353133867] [2021-06-05 08:11:19,524 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 08:11:19,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:11:19,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 08:11:19,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=1160, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 08:11:19,525 INFO L87 Difference]: Start difference. First operand 6328 states and 17883 transitions. Second operand has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:20,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:11:20,897 INFO L93 Difference]: Finished difference Result 7821 states and 20997 transitions. [2021-06-05 08:11:20,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-06-05 08:11:20,898 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:11:20,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:11:20,905 INFO L225 Difference]: With dead ends: 7821 [2021-06-05 08:11:20,905 INFO L226 Difference]: Without dead ends: 7551 [2021-06-05 08:11:20,905 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2429 ImplicationChecksByTransitivity, 1406.8ms TimeCoverageRelationStatistics Valid=2462, Invalid=6850, Unknown=0, NotChecked=0, Total=9312 [2021-06-05 08:11:20,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7551 states. [2021-06-05 08:11:20,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7551 to 6328. [2021-06-05 08:11:20,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 6327 states have (on average 2.8264580369843526) internal successors, (17883), 6327 states have internal predecessors, (17883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:20,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 17883 transitions. [2021-06-05 08:11:20,981 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 17883 transitions. Word has length 190 [2021-06-05 08:11:20,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:11:20,981 INFO L482 AbstractCegarLoop]: Abstraction has 6328 states and 17883 transitions. [2021-06-05 08:11:20,981 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:20,981 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 17883 transitions. [2021-06-05 08:11:20,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:11:20,987 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:11:20,987 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:11:21,187 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable524,520 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:11:21,188 INFO L430 AbstractCegarLoop]: === Iteration 526 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:11:21,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:11:21,188 INFO L82 PathProgramCache]: Analyzing trace with hash 72083855, now seen corresponding path program 517 times [2021-06-05 08:11:21,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:11:21,188 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244502801] [2021-06-05 08:11:21,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:11:21,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:11:21,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:11:21,584 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:11:21,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244502801] [2021-06-05 08:11:21,584 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244502801] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:11:21,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793058630] [2021-06-05 08:11:21,584 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 521 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 521 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:11:21,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:11:21,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 08:11:21,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:11:21,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:11:21,887 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793058630] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:11:21,888 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:11:21,888 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2021-06-05 08:11:21,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234868234] [2021-06-05 08:11:21,888 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 08:11:21,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:11:21,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 08:11:21,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=1236, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 08:11:21,888 INFO L87 Difference]: Start difference. First operand 6328 states and 17883 transitions. Second operand has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:23,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:11:23,726 INFO L93 Difference]: Finished difference Result 7771 states and 20897 transitions. [2021-06-05 08:11:23,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-06-05 08:11:23,726 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:11:23,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:11:23,735 INFO L225 Difference]: With dead ends: 7771 [2021-06-05 08:11:23,735 INFO L226 Difference]: Without dead ends: 7501 [2021-06-05 08:11:23,736 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2629 ImplicationChecksByTransitivity, 1869.5ms TimeCoverageRelationStatistics Valid=2651, Invalid=7449, Unknown=0, NotChecked=0, Total=10100 [2021-06-05 08:11:23,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7501 states. [2021-06-05 08:11:23,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7501 to 6328. [2021-06-05 08:11:23,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 6327 states have (on average 2.8264580369843526) internal successors, (17883), 6327 states have internal predecessors, (17883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:23,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 17883 transitions. [2021-06-05 08:11:23,815 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 17883 transitions. Word has length 190 [2021-06-05 08:11:23,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:11:23,815 INFO L482 AbstractCegarLoop]: Abstraction has 6328 states and 17883 transitions. [2021-06-05 08:11:23,815 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:23,815 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 17883 transitions. [2021-06-05 08:11:23,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:11:23,821 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:11:23,821 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:11:24,037 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 521 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable525 [2021-06-05 08:11:24,037 INFO L430 AbstractCegarLoop]: === Iteration 527 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:11:24,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:11:24,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1807244035, now seen corresponding path program 518 times [2021-06-05 08:11:24,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:11:24,037 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722822480] [2021-06-05 08:11:24,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:11:24,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:11:24,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:11:24,478 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:11:24,478 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722822480] [2021-06-05 08:11:24,478 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722822480] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:11:24,478 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383730381] [2021-06-05 08:11:24,478 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 522 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 522 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:11:24,556 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:11:24,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:11:24,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 08:11:24,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:11:24,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:11:24,852 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383730381] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:11:24,852 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:11:24,852 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 38 [2021-06-05 08:11:24,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547026331] [2021-06-05 08:11:24,853 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 08:11:24,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:11:24,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 08:11:24,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=1141, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 08:11:24,853 INFO L87 Difference]: Start difference. First operand 6328 states and 17883 transitions. Second operand has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:26,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:11:26,369 INFO L93 Difference]: Finished difference Result 7721 states and 20797 transitions. [2021-06-05 08:11:26,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-05 08:11:26,370 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:11:26,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:11:26,379 INFO L225 Difference]: With dead ends: 7721 [2021-06-05 08:11:26,379 INFO L226 Difference]: Without dead ends: 7451 [2021-06-05 08:11:26,380 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2580 ImplicationChecksByTransitivity, 1574.9ms TimeCoverageRelationStatistics Valid=2646, Invalid=7056, Unknown=0, NotChecked=0, Total=9702 [2021-06-05 08:11:26,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7451 states. [2021-06-05 08:11:26,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7451 to 6328. [2021-06-05 08:11:26,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 6327 states have (on average 2.8264580369843526) internal successors, (17883), 6327 states have internal predecessors, (17883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:26,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 17883 transitions. [2021-06-05 08:11:26,462 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 17883 transitions. Word has length 190 [2021-06-05 08:11:26,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:11:26,462 INFO L482 AbstractCegarLoop]: Abstraction has 6328 states and 17883 transitions. [2021-06-05 08:11:26,462 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:26,462 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 17883 transitions. [2021-06-05 08:11:26,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:11:26,467 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:11:26,467 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:11:26,680 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable526,522 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:11:26,680 INFO L430 AbstractCegarLoop]: === Iteration 528 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:11:26,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:11:26,681 INFO L82 PathProgramCache]: Analyzing trace with hash 223075277, now seen corresponding path program 519 times [2021-06-05 08:11:26,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:11:26,681 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942215550] [2021-06-05 08:11:26,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:11:26,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:11:27,041 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:11:27,041 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:11:27,041 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942215550] [2021-06-05 08:11:27,041 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942215550] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:11:27,041 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731141570] [2021-06-05 08:11:27,041 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 523 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 523 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:11:27,155 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2021-06-05 08:11:27,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:11:27,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 43 conjunts are in the unsatisfiable core [2021-06-05 08:11:27,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:11:27,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:11:27,387 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731141570] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:11:27,387 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:11:27,387 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2021-06-05 08:11:27,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14012121] [2021-06-05 08:11:27,392 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 08:11:27,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:11:27,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 08:11:27,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=1216, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 08:11:27,393 INFO L87 Difference]: Start difference. First operand 6328 states and 17883 transitions. Second operand has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:29,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:11:29,087 INFO L93 Difference]: Finished difference Result 7671 states and 20697 transitions. [2021-06-05 08:11:29,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-06-05 08:11:29,087 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:11:29,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:11:29,095 INFO L225 Difference]: With dead ends: 7671 [2021-06-05 08:11:29,095 INFO L226 Difference]: Without dead ends: 7401 [2021-06-05 08:11:29,096 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2570 ImplicationChecksByTransitivity, 1655.9ms TimeCoverageRelationStatistics Valid=2451, Invalid=7649, Unknown=0, NotChecked=0, Total=10100 [2021-06-05 08:11:29,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7401 states. [2021-06-05 08:11:29,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7401 to 6328. [2021-06-05 08:11:29,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 6327 states have (on average 2.8264580369843526) internal successors, (17883), 6327 states have internal predecessors, (17883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:29,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 17883 transitions. [2021-06-05 08:11:29,177 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 17883 transitions. Word has length 190 [2021-06-05 08:11:29,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:11:29,177 INFO L482 AbstractCegarLoop]: Abstraction has 6328 states and 17883 transitions. [2021-06-05 08:11:29,177 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:29,177 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 17883 transitions. [2021-06-05 08:11:29,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:11:29,183 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:11:29,183 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:11:29,383 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable527,523 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:11:29,383 INFO L430 AbstractCegarLoop]: === Iteration 529 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:11:29,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:11:29,384 INFO L82 PathProgramCache]: Analyzing trace with hash 837314747, now seen corresponding path program 520 times [2021-06-05 08:11:29,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:11:29,384 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118967565] [2021-06-05 08:11:29,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:11:29,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:11:29,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:11:29,735 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:11:29,735 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118967565] [2021-06-05 08:11:29,735 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118967565] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:11:29,735 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963616595] [2021-06-05 08:11:29,735 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 524 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 524 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:11:29,814 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:11:29,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:11:29,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 08:11:29,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:11:30,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:11:30,040 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963616595] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:11:30,040 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:11:30,040 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 38 [2021-06-05 08:11:30,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987160470] [2021-06-05 08:11:30,040 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 08:11:30,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:11:30,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 08:11:30,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=1118, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 08:11:30,040 INFO L87 Difference]: Start difference. First operand 6328 states and 17883 transitions. Second operand has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:31,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:11:31,550 INFO L93 Difference]: Finished difference Result 7621 states and 20597 transitions. [2021-06-05 08:11:31,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-06-05 08:11:31,551 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:11:31,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:11:31,559 INFO L225 Difference]: With dead ends: 7621 [2021-06-05 08:11:31,559 INFO L226 Difference]: Without dead ends: 7351 [2021-06-05 08:11:31,560 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2735 ImplicationChecksByTransitivity, 1442.7ms TimeCoverageRelationStatistics Valid=2846, Invalid=7254, Unknown=0, NotChecked=0, Total=10100 [2021-06-05 08:11:31,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7351 states. [2021-06-05 08:11:31,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7351 to 6328. [2021-06-05 08:11:31,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 6327 states have (on average 2.8264580369843526) internal successors, (17883), 6327 states have internal predecessors, (17883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:31,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 17883 transitions. [2021-06-05 08:11:31,640 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 17883 transitions. Word has length 190 [2021-06-05 08:11:31,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:11:31,640 INFO L482 AbstractCegarLoop]: Abstraction has 6328 states and 17883 transitions. [2021-06-05 08:11:31,640 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:31,641 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 17883 transitions. [2021-06-05 08:11:31,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:11:31,646 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:11:31,646 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:11:31,860 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable528,524 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:11:31,861 INFO L430 AbstractCegarLoop]: === Iteration 530 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:11:31,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:11:31,861 INFO L82 PathProgramCache]: Analyzing trace with hash -877927541, now seen corresponding path program 521 times [2021-06-05 08:11:31,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:11:31,861 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385010062] [2021-06-05 08:11:31,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:11:31,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:11:32,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:11:32,271 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:11:32,271 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385010062] [2021-06-05 08:11:32,271 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385010062] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:11:32,271 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066411716] [2021-06-05 08:11:32,271 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 525 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 525 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:11:32,353 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2021-06-05 08:11:32,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:11:32,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 08:11:32,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:11:32,577 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:11:32,578 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066411716] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:11:32,578 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:11:32,578 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2021-06-05 08:11:32,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813334530] [2021-06-05 08:11:32,578 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 08:11:32,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:11:32,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 08:11:32,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=1192, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 08:11:32,578 INFO L87 Difference]: Start difference. First operand 6328 states and 17883 transitions. Second operand has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:34,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:11:34,447 INFO L93 Difference]: Finished difference Result 8079 states and 21863 transitions. [2021-06-05 08:11:34,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-06-05 08:11:34,447 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:11:34,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:11:34,456 INFO L225 Difference]: With dead ends: 8079 [2021-06-05 08:11:34,456 INFO L226 Difference]: Without dead ends: 7456 [2021-06-05 08:11:34,457 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3080 ImplicationChecksByTransitivity, 1859.6ms TimeCoverageRelationStatistics Valid=3074, Invalid=8268, Unknown=0, NotChecked=0, Total=11342 [2021-06-05 08:11:34,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7456 states. [2021-06-05 08:11:34,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7456 to 6238. [2021-06-05 08:11:34,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6238 states, 6237 states have (on average 2.829565496232163) internal successors, (17648), 6237 states have internal predecessors, (17648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:34,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6238 states to 6238 states and 17648 transitions. [2021-06-05 08:11:34,550 INFO L78 Accepts]: Start accepts. Automaton has 6238 states and 17648 transitions. Word has length 190 [2021-06-05 08:11:34,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:11:34,551 INFO L482 AbstractCegarLoop]: Abstraction has 6238 states and 17648 transitions. [2021-06-05 08:11:34,551 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:34,551 INFO L276 IsEmpty]: Start isEmpty. Operand 6238 states and 17648 transitions. [2021-06-05 08:11:34,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:11:34,556 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:11:34,556 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:11:34,756 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable529,525 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:11:34,757 INFO L430 AbstractCegarLoop]: === Iteration 531 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:11:34,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:11:34,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1910575143, now seen corresponding path program 522 times [2021-06-05 08:11:34,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:11:34,757 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916419920] [2021-06-05 08:11:34,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:11:34,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:11:35,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:11:35,125 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:11:35,125 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916419920] [2021-06-05 08:11:35,125 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916419920] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:11:35,125 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143915830] [2021-06-05 08:11:35,125 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 526 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 526 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:11:35,216 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2021-06-05 08:11:35,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:11:35,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 39 conjunts are in the unsatisfiable core [2021-06-05 08:11:35,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:11:35,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:11:35,423 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143915830] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:11:35,423 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:11:35,423 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 38 [2021-06-05 08:11:35,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914354813] [2021-06-05 08:11:35,423 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 08:11:35,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:11:35,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 08:11:35,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=1091, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 08:11:35,423 INFO L87 Difference]: Start difference. First operand 6238 states and 17648 transitions. Second operand has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:36,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:11:36,962 INFO L93 Difference]: Finished difference Result 8308 states and 22581 transitions. [2021-06-05 08:11:36,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-06-05 08:11:36,963 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:11:36,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:11:36,972 INFO L225 Difference]: With dead ends: 8308 [2021-06-05 08:11:36,972 INFO L226 Difference]: Without dead ends: 8038 [2021-06-05 08:11:36,973 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2893 ImplicationChecksByTransitivity, 1522.8ms TimeCoverageRelationStatistics Valid=3063, Invalid=7443, Unknown=0, NotChecked=0, Total=10506 [2021-06-05 08:11:36,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8038 states. [2021-06-05 08:11:37,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8038 to 6418. [2021-06-05 08:11:37,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6418 states, 6417 states have (on average 2.837307152875175) internal successors, (18207), 6417 states have internal predecessors, (18207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:37,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6418 states to 6418 states and 18207 transitions. [2021-06-05 08:11:37,056 INFO L78 Accepts]: Start accepts. Automaton has 6418 states and 18207 transitions. Word has length 190 [2021-06-05 08:11:37,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:11:37,056 INFO L482 AbstractCegarLoop]: Abstraction has 6418 states and 18207 transitions. [2021-06-05 08:11:37,056 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 5.052631578947368) internal successors, (192), 38 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:37,056 INFO L276 IsEmpty]: Start isEmpty. Operand 6418 states and 18207 transitions. [2021-06-05 08:11:37,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-05 08:11:37,061 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:11:37,061 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:11:37,262 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 526 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable530 [2021-06-05 08:11:37,262 INFO L430 AbstractCegarLoop]: === Iteration 532 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:11:37,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:11:37,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1888231893, now seen corresponding path program 523 times [2021-06-05 08:11:37,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:11:37,262 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629877728] [2021-06-05 08:11:37,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:11:37,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:11:37,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:11:37,625 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:11:37,626 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629877728] [2021-06-05 08:11:37,626 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629877728] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:11:37,626 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688219623] [2021-06-05 08:11:37,626 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 527 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 527 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:11:37,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:11:37,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 08:11:37,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:11:37,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:11:37,924 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688219623] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:11:37,924 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:11:37,924 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2021-06-05 08:11:37,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877197817] [2021-06-05 08:11:37,925 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 08:11:37,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:11:37,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 08:11:37,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=1164, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 08:11:37,925 INFO L87 Difference]: Start difference. First operand 6418 states and 18207 transitions. Second operand has 39 states, 39 states have (on average 4.948717948717949) internal successors, (193), 39 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:39,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:11:39,945 INFO L93 Difference]: Finished difference Result 8251 states and 22441 transitions. [2021-06-05 08:11:39,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-06-05 08:11:39,946 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.948717948717949) internal successors, (193), 39 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-06-05 08:11:39,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:11:39,953 INFO L225 Difference]: With dead ends: 8251 [2021-06-05 08:11:39,953 INFO L226 Difference]: Without dead ends: 7676 [2021-06-05 08:11:39,954 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3326 ImplicationChecksByTransitivity, 1960.1ms TimeCoverageRelationStatistics Valid=3333, Invalid=8657, Unknown=0, NotChecked=0, Total=11990 [2021-06-05 08:11:39,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7676 states. [2021-06-05 08:11:40,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7676 to 6453. [2021-06-05 08:11:40,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6453 states, 6452 states have (on average 2.833694978301302) internal successors, (18283), 6452 states have internal predecessors, (18283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:40,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6453 states to 6453 states and 18283 transitions. [2021-06-05 08:11:40,026 INFO L78 Accepts]: Start accepts. Automaton has 6453 states and 18283 transitions. Word has length 190 [2021-06-05 08:11:40,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:11:40,027 INFO L482 AbstractCegarLoop]: Abstraction has 6453 states and 18283 transitions. [2021-06-05 08:11:40,027 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 4.948717948717949) internal successors, (193), 39 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:40,027 INFO L276 IsEmpty]: Start isEmpty. Operand 6453 states and 18283 transitions. [2021-06-05 08:11:40,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-06-05 08:11:40,032 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:11:40,032 INFO L521 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:11:40,232 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 527 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable531 [2021-06-05 08:11:40,233 INFO L430 AbstractCegarLoop]: === Iteration 533 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:11:40,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:11:40,233 INFO L82 PathProgramCache]: Analyzing trace with hash 283286740, now seen corresponding path program 524 times [2021-06-05 08:11:40,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:11:40,233 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160802584] [2021-06-05 08:11:40,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:11:40,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:11:40,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:11:40,677 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:11:40,677 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160802584] [2021-06-05 08:11:40,677 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160802584] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:11:40,677 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24547245] [2021-06-05 08:11:40,677 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 528 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 528 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:11:40,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:11:40,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:11:40,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 39 conjunts are in the unsatisfiable core [2021-06-05 08:11:40,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:11:40,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:11:40,991 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24547245] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:11:40,991 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:11:40,991 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2021-06-05 08:11:40,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620118120] [2021-06-05 08:11:40,991 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 08:11:40,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:11:40,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 08:11:40,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=1091, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 08:11:40,992 INFO L87 Difference]: Start difference. First operand 6453 states and 18283 transitions. Second operand has 38 states, 38 states have (on average 5.131578947368421) internal successors, (195), 38 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:41,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:11:41,796 INFO L93 Difference]: Finished difference Result 8396 states and 22297 transitions. [2021-06-05 08:11:41,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 08:11:41,797 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.131578947368421) internal successors, (195), 38 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2021-06-05 08:11:41,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:11:41,806 INFO L225 Difference]: With dead ends: 8396 [2021-06-05 08:11:41,806 INFO L226 Difference]: Without dead ends: 8126 [2021-06-05 08:11:41,807 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1052 ImplicationChecksByTransitivity, 988.8ms TimeCoverageRelationStatistics Valid=1551, Invalid=4149, Unknown=0, NotChecked=0, Total=5700 [2021-06-05 08:11:41,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8126 states. [2021-06-05 08:11:41,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8126 to 6453. [2021-06-05 08:11:41,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6453 states, 6452 states have (on average 2.833694978301302) internal successors, (18283), 6452 states have internal predecessors, (18283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:41,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6453 states to 6453 states and 18283 transitions. [2021-06-05 08:11:41,887 INFO L78 Accepts]: Start accepts. Automaton has 6453 states and 18283 transitions. Word has length 195 [2021-06-05 08:11:41,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:11:41,887 INFO L482 AbstractCegarLoop]: Abstraction has 6453 states and 18283 transitions. [2021-06-05 08:11:41,887 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 5.131578947368421) internal successors, (195), 38 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:41,887 INFO L276 IsEmpty]: Start isEmpty. Operand 6453 states and 18283 transitions. [2021-06-05 08:11:41,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-06-05 08:11:41,892 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:11:41,892 INFO L521 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:11:42,093 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 528 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable532 [2021-06-05 08:11:42,093 INFO L430 AbstractCegarLoop]: === Iteration 534 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:11:42,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:11:42,093 INFO L82 PathProgramCache]: Analyzing trace with hash 112680868, now seen corresponding path program 525 times [2021-06-05 08:11:42,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:11:42,093 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147385488] [2021-06-05 08:11:42,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:11:42,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:11:42,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:11:42,556 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:11:42,556 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147385488] [2021-06-05 08:11:42,556 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147385488] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:11:42,557 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079103844] [2021-06-05 08:11:42,557 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 529 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 529 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:11:42,639 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2021-06-05 08:11:42,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:11:42,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 39 conjunts are in the unsatisfiable core [2021-06-05 08:11:42,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:11:42,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:11:42,908 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079103844] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:11:42,908 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:11:42,908 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 39 [2021-06-05 08:11:42,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702649436] [2021-06-05 08:11:42,909 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 08:11:42,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:11:42,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 08:11:42,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=1179, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 08:11:42,909 INFO L87 Difference]: Start difference. First operand 6453 states and 18283 transitions. Second operand has 39 states, 39 states have (on average 5.051282051282051) internal successors, (197), 39 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:43,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:11:43,754 INFO L93 Difference]: Finished difference Result 9141 states and 23787 transitions. [2021-06-05 08:11:43,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 08:11:43,755 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.051282051282051) internal successors, (197), 39 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2021-06-05 08:11:43,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:11:43,765 INFO L225 Difference]: With dead ends: 9141 [2021-06-05 08:11:43,765 INFO L226 Difference]: Without dead ends: 8871 [2021-06-05 08:11:43,765 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1193 ImplicationChecksByTransitivity, 1058.6ms TimeCoverageRelationStatistics Valid=1625, Invalid=4537, Unknown=0, NotChecked=0, Total=6162 [2021-06-05 08:11:43,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8871 states. [2021-06-05 08:11:43,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8871 to 6453. [2021-06-05 08:11:43,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6453 states, 6452 states have (on average 2.833694978301302) internal successors, (18283), 6452 states have internal predecessors, (18283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:43,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6453 states to 6453 states and 18283 transitions. [2021-06-05 08:11:43,848 INFO L78 Accepts]: Start accepts. Automaton has 6453 states and 18283 transitions. Word has length 195 [2021-06-05 08:11:43,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:11:43,848 INFO L482 AbstractCegarLoop]: Abstraction has 6453 states and 18283 transitions. [2021-06-05 08:11:43,849 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 5.051282051282051) internal successors, (197), 39 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:43,849 INFO L276 IsEmpty]: Start isEmpty. Operand 6453 states and 18283 transitions. [2021-06-05 08:11:43,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-06-05 08:11:43,854 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:11:43,854 INFO L521 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:11:44,054 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable533,529 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:11:44,054 INFO L430 AbstractCegarLoop]: === Iteration 535 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:11:44,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:11:44,054 INFO L82 PathProgramCache]: Analyzing trace with hash 954173714, now seen corresponding path program 526 times [2021-06-05 08:11:44,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:11:44,055 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441033989] [2021-06-05 08:11:44,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:11:44,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:11:44,491 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:11:44,491 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:11:44,491 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441033989] [2021-06-05 08:11:44,491 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441033989] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:11:44,491 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159489801] [2021-06-05 08:11:44,491 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 530 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 530 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:11:44,559 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:11:44,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:11:44,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 39 conjunts are in the unsatisfiable core [2021-06-05 08:11:44,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:11:44,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:11:44,781 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159489801] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:11:44,781 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:11:44,781 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2021-06-05 08:11:44,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275476702] [2021-06-05 08:11:44,781 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 08:11:44,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:11:44,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 08:11:44,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=1118, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 08:11:44,782 INFO L87 Difference]: Start difference. First operand 6453 states and 18283 transitions. Second operand has 38 states, 38 states have (on average 5.131578947368421) internal successors, (195), 38 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:45,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:11:45,614 INFO L93 Difference]: Finished difference Result 9096 states and 23697 transitions. [2021-06-05 08:11:45,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 08:11:45,615 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.131578947368421) internal successors, (195), 38 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2021-06-05 08:11:45,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:11:45,625 INFO L225 Difference]: With dead ends: 9096 [2021-06-05 08:11:45,625 INFO L226 Difference]: Without dead ends: 8826 [2021-06-05 08:11:45,626 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1276 ImplicationChecksByTransitivity, 1009.9ms TimeCoverageRelationStatistics Valid=1611, Invalid=4551, Unknown=0, NotChecked=0, Total=6162 [2021-06-05 08:11:45,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8826 states. [2021-06-05 08:11:45,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8826 to 6453. [2021-06-05 08:11:45,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6453 states, 6452 states have (on average 2.833694978301302) internal successors, (18283), 6452 states have internal predecessors, (18283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:45,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6453 states to 6453 states and 18283 transitions. [2021-06-05 08:11:45,709 INFO L78 Accepts]: Start accepts. Automaton has 6453 states and 18283 transitions. Word has length 195 [2021-06-05 08:11:45,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:11:45,709 INFO L482 AbstractCegarLoop]: Abstraction has 6453 states and 18283 transitions. [2021-06-05 08:11:45,709 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 5.131578947368421) internal successors, (195), 38 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:45,709 INFO L276 IsEmpty]: Start isEmpty. Operand 6453 states and 18283 transitions. [2021-06-05 08:11:45,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-06-05 08:11:45,715 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:11:45,715 INFO L521 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:11:45,915 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable534,530 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:11:45,915 INFO L430 AbstractCegarLoop]: === Iteration 536 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:11:45,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:11:45,915 INFO L82 PathProgramCache]: Analyzing trace with hash -193818654, now seen corresponding path program 527 times [2021-06-05 08:11:45,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:11:45,915 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676252994] [2021-06-05 08:11:45,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:11:45,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:11:46,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:11:46,462 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:11:46,462 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676252994] [2021-06-05 08:11:46,462 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676252994] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:11:46,462 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293427201] [2021-06-05 08:11:46,462 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 531 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 531 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:11:46,546 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2021-06-05 08:11:46,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:11:46,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 39 conjunts are in the unsatisfiable core [2021-06-05 08:11:46,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:11:46,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:11:46,786 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293427201] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:11:46,786 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:11:46,786 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 39 [2021-06-05 08:11:46,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110958029] [2021-06-05 08:11:46,786 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 08:11:46,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:11:46,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 08:11:46,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=277, Invalid=1205, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 08:11:46,787 INFO L87 Difference]: Start difference. First operand 6453 states and 18283 transitions. Second operand has 39 states, 39 states have (on average 5.051282051282051) internal successors, (197), 39 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:47,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:11:47,754 INFO L93 Difference]: Finished difference Result 9046 states and 23597 transitions. [2021-06-05 08:11:47,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-05 08:11:47,754 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.051282051282051) internal successors, (197), 39 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2021-06-05 08:11:47,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:11:47,764 INFO L225 Difference]: With dead ends: 9046 [2021-06-05 08:11:47,764 INFO L226 Difference]: Without dead ends: 8776 [2021-06-05 08:11:47,765 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1300 ImplicationChecksByTransitivity, 1254.4ms TimeCoverageRelationStatistics Valid=1633, Invalid=4847, Unknown=0, NotChecked=0, Total=6480 [2021-06-05 08:11:47,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8776 states. [2021-06-05 08:11:47,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8776 to 6453. [2021-06-05 08:11:47,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6453 states, 6452 states have (on average 2.833694978301302) internal successors, (18283), 6452 states have internal predecessors, (18283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:47,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6453 states to 6453 states and 18283 transitions. [2021-06-05 08:11:47,853 INFO L78 Accepts]: Start accepts. Automaton has 6453 states and 18283 transitions. Word has length 195 [2021-06-05 08:11:47,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:11:47,854 INFO L482 AbstractCegarLoop]: Abstraction has 6453 states and 18283 transitions. [2021-06-05 08:11:47,854 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 5.051282051282051) internal successors, (197), 39 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:47,854 INFO L276 IsEmpty]: Start isEmpty. Operand 6453 states and 18283 transitions. [2021-06-05 08:11:47,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-06-05 08:11:47,859 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:11:47,859 INFO L521 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:11:48,075 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 531 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable535 [2021-06-05 08:11:48,075 INFO L430 AbstractCegarLoop]: === Iteration 537 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:11:48,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:11:48,075 INFO L82 PathProgramCache]: Analyzing trace with hash -2058548528, now seen corresponding path program 528 times [2021-06-05 08:11:48,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:11:48,076 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332970493] [2021-06-05 08:11:48,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:11:48,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:11:48,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:11:48,526 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:11:48,526 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332970493] [2021-06-05 08:11:48,526 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332970493] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:11:48,526 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949254089] [2021-06-05 08:11:48,526 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 532 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 532 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:11:48,621 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2021-06-05 08:11:48,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:11:48,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 39 conjunts are in the unsatisfiable core [2021-06-05 08:11:48,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:11:48,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:11:48,840 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949254089] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:11:48,840 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:11:48,841 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2021-06-05 08:11:48,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962005110] [2021-06-05 08:11:48,841 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 08:11:48,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:11:48,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 08:11:48,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=1141, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 08:11:48,841 INFO L87 Difference]: Start difference. First operand 6453 states and 18283 transitions. Second operand has 38 states, 38 states have (on average 5.131578947368421) internal successors, (195), 38 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:49,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:11:49,955 INFO L93 Difference]: Finished difference Result 8996 states and 23497 transitions. [2021-06-05 08:11:49,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 08:11:49,956 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.131578947368421) internal successors, (195), 38 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2021-06-05 08:11:49,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:11:49,965 INFO L225 Difference]: With dead ends: 8996 [2021-06-05 08:11:49,965 INFO L226 Difference]: Without dead ends: 8726 [2021-06-05 08:11:49,966 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1393 ImplicationChecksByTransitivity, 1291.0ms TimeCoverageRelationStatistics Valid=1633, Invalid=4847, Unknown=0, NotChecked=0, Total=6480 [2021-06-05 08:11:49,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8726 states. [2021-06-05 08:11:50,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8726 to 6453. [2021-06-05 08:11:50,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6453 states, 6452 states have (on average 2.833694978301302) internal successors, (18283), 6452 states have internal predecessors, (18283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:50,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6453 states to 6453 states and 18283 transitions. [2021-06-05 08:11:50,051 INFO L78 Accepts]: Start accepts. Automaton has 6453 states and 18283 transitions. Word has length 195 [2021-06-05 08:11:50,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:11:50,051 INFO L482 AbstractCegarLoop]: Abstraction has 6453 states and 18283 transitions. [2021-06-05 08:11:50,051 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 5.131578947368421) internal successors, (195), 38 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:50,051 INFO L276 IsEmpty]: Start isEmpty. Operand 6453 states and 18283 transitions. [2021-06-05 08:11:50,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-06-05 08:11:50,057 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:11:50,057 INFO L521 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:11:50,277 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 532 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable536 [2021-06-05 08:11:50,277 INFO L430 AbstractCegarLoop]: === Iteration 538 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:11:50,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:11:50,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1360833120, now seen corresponding path program 529 times [2021-06-05 08:11:50,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:11:50,277 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377111344] [2021-06-05 08:11:50,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:11:50,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:11:50,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:11:50,769 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:11:50,769 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377111344] [2021-06-05 08:11:50,769 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377111344] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:11:50,769 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629989265] [2021-06-05 08:11:50,769 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 533 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 533 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:11:50,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:11:50,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 39 conjunts are in the unsatisfiable core [2021-06-05 08:11:50,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:11:51,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:11:51,121 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629989265] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:11:51,121 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:11:51,121 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 39 [2021-06-05 08:11:51,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089374774] [2021-06-05 08:11:51,121 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 08:11:51,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:11:51,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 08:11:51,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=1227, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 08:11:51,122 INFO L87 Difference]: Start difference. First operand 6453 states and 18283 transitions. Second operand has 39 states, 39 states have (on average 5.051282051282051) internal successors, (197), 39 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:52,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:11:52,201 INFO L93 Difference]: Finished difference Result 8946 states and 23397 transitions. [2021-06-05 08:11:52,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 08:11:52,202 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.051282051282051) internal successors, (197), 39 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2021-06-05 08:11:52,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:11:52,212 INFO L225 Difference]: With dead ends: 8946 [2021-06-05 08:11:52,213 INFO L226 Difference]: Without dead ends: 8676 [2021-06-05 08:11:52,213 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1420 ImplicationChecksByTransitivity, 1210.2ms TimeCoverageRelationStatistics Valid=1657, Invalid=5149, Unknown=0, NotChecked=0, Total=6806 [2021-06-05 08:11:52,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8676 states. [2021-06-05 08:11:52,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8676 to 6453. [2021-06-05 08:11:52,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6453 states, 6452 states have (on average 2.833694978301302) internal successors, (18283), 6452 states have internal predecessors, (18283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:52,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6453 states to 6453 states and 18283 transitions. [2021-06-05 08:11:52,303 INFO L78 Accepts]: Start accepts. Automaton has 6453 states and 18283 transitions. Word has length 195 [2021-06-05 08:11:52,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:11:52,303 INFO L482 AbstractCegarLoop]: Abstraction has 6453 states and 18283 transitions. [2021-06-05 08:11:52,303 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 5.051282051282051) internal successors, (197), 39 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:52,303 INFO L276 IsEmpty]: Start isEmpty. Operand 6453 states and 18283 transitions. [2021-06-05 08:11:52,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-06-05 08:11:52,309 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:11:52,309 INFO L521 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:11:52,523 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable537,533 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:11:52,523 INFO L430 AbstractCegarLoop]: === Iteration 539 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:11:52,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:11:52,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1214251534, now seen corresponding path program 530 times [2021-06-05 08:11:52,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:11:52,523 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700651540] [2021-06-05 08:11:52,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:11:52,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:11:53,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:11:53,023 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:11:53,023 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700651540] [2021-06-05 08:11:53,023 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700651540] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:11:53,023 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242486477] [2021-06-05 08:11:53,023 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 534 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 534 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:11:53,113 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:11:53,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:11:53,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 39 conjunts are in the unsatisfiable core [2021-06-05 08:11:53,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:11:53,400 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:11:53,400 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242486477] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:11:53,400 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:11:53,400 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2021-06-05 08:11:53,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367608770] [2021-06-05 08:11:53,401 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 08:11:53,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:11:53,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 08:11:53,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=1160, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 08:11:53,401 INFO L87 Difference]: Start difference. First operand 6453 states and 18283 transitions. Second operand has 38 states, 38 states have (on average 5.131578947368421) internal successors, (195), 38 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:54,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:11:54,394 INFO L93 Difference]: Finished difference Result 8896 states and 23297 transitions. [2021-06-05 08:11:54,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 08:11:54,395 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.131578947368421) internal successors, (195), 38 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2021-06-05 08:11:54,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:11:54,405 INFO L225 Difference]: With dead ends: 8896 [2021-06-05 08:11:54,405 INFO L226 Difference]: Without dead ends: 8626 [2021-06-05 08:11:54,406 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1518 ImplicationChecksByTransitivity, 1205.0ms TimeCoverageRelationStatistics Valid=1671, Invalid=5135, Unknown=0, NotChecked=0, Total=6806 [2021-06-05 08:11:54,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8626 states. [2021-06-05 08:11:54,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8626 to 6453. [2021-06-05 08:11:54,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6453 states, 6452 states have (on average 2.833694978301302) internal successors, (18283), 6452 states have internal predecessors, (18283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:54,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6453 states to 6453 states and 18283 transitions. [2021-06-05 08:11:54,494 INFO L78 Accepts]: Start accepts. Automaton has 6453 states and 18283 transitions. Word has length 195 [2021-06-05 08:11:54,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:11:54,494 INFO L482 AbstractCegarLoop]: Abstraction has 6453 states and 18283 transitions. [2021-06-05 08:11:54,494 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 5.131578947368421) internal successors, (195), 38 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:54,494 INFO L276 IsEmpty]: Start isEmpty. Operand 6453 states and 18283 transitions. [2021-06-05 08:11:54,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-06-05 08:11:54,499 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:11:54,500 INFO L521 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:11:54,716 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable538,534 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:11:54,716 INFO L430 AbstractCegarLoop]: === Iteration 540 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:11:54,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:11:54,716 INFO L82 PathProgramCache]: Analyzing trace with hash 712937694, now seen corresponding path program 531 times [2021-06-05 08:11:54,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:11:54,716 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780829653] [2021-06-05 08:11:54,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:11:54,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:11:55,182 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:11:55,182 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:11:55,182 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780829653] [2021-06-05 08:11:55,182 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780829653] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:11:55,182 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021701370] [2021-06-05 08:11:55,182 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 535 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 535 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:11:55,275 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2021-06-05 08:11:55,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:11:55,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 64 conjunts are in the unsatisfiable core [2021-06-05 08:11:55,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:11:55,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:11:55,502 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021701370] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:11:55,502 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:11:55,502 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 39 [2021-06-05 08:11:55,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591062683] [2021-06-05 08:11:55,502 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 08:11:55,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:11:55,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 08:11:55,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=1245, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 08:11:55,503 INFO L87 Difference]: Start difference. First operand 6453 states and 18283 transitions. Second operand has 39 states, 39 states have (on average 5.051282051282051) internal successors, (197), 39 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:56,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:11:56,657 INFO L93 Difference]: Finished difference Result 8846 states and 23197 transitions. [2021-06-05 08:11:56,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-06-05 08:11:56,657 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.051282051282051) internal successors, (197), 39 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2021-06-05 08:11:56,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:11:56,668 INFO L225 Difference]: With dead ends: 8846 [2021-06-05 08:11:56,668 INFO L226 Difference]: Without dead ends: 8576 [2021-06-05 08:11:56,669 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1535 ImplicationChecksByTransitivity, 1316.1ms TimeCoverageRelationStatistics Valid=1676, Invalid=5464, Unknown=0, NotChecked=0, Total=7140 [2021-06-05 08:11:56,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8576 states. [2021-06-05 08:11:56,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8576 to 6453. [2021-06-05 08:11:56,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6453 states, 6452 states have (on average 2.833694978301302) internal successors, (18283), 6452 states have internal predecessors, (18283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:56,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6453 states to 6453 states and 18283 transitions. [2021-06-05 08:11:56,757 INFO L78 Accepts]: Start accepts. Automaton has 6453 states and 18283 transitions. Word has length 195 [2021-06-05 08:11:56,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:11:56,758 INFO L482 AbstractCegarLoop]: Abstraction has 6453 states and 18283 transitions. [2021-06-05 08:11:56,758 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 5.051282051282051) internal successors, (197), 39 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:56,758 INFO L276 IsEmpty]: Start isEmpty. Operand 6453 states and 18283 transitions. [2021-06-05 08:11:56,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-06-05 08:11:56,763 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:11:56,763 INFO L521 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:11:56,981 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 535 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable539 [2021-06-05 08:11:56,981 INFO L430 AbstractCegarLoop]: === Iteration 541 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:11:56,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:11:56,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1189433036, now seen corresponding path program 532 times [2021-06-05 08:11:56,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:11:56,981 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257560582] [2021-06-05 08:11:56,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:11:57,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:11:57,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:11:57,466 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:11:57,466 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257560582] [2021-06-05 08:11:57,466 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257560582] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:11:57,466 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781765091] [2021-06-05 08:11:57,466 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 536 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 536 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:11:57,543 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:11:57,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:11:57,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 39 conjunts are in the unsatisfiable core [2021-06-05 08:11:57,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:11:57,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:11:57,773 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781765091] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:11:57,774 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:11:57,774 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2021-06-05 08:11:57,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783096488] [2021-06-05 08:11:57,774 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 08:11:57,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:11:57,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 08:11:57,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=1175, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 08:11:57,774 INFO L87 Difference]: Start difference. First operand 6453 states and 18283 transitions. Second operand has 38 states, 38 states have (on average 5.131578947368421) internal successors, (195), 38 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:58,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:11:58,824 INFO L93 Difference]: Finished difference Result 8796 states and 23097 transitions. [2021-06-05 08:11:58,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 08:11:58,824 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.131578947368421) internal successors, (195), 38 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2021-06-05 08:11:58,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:11:58,834 INFO L225 Difference]: With dead ends: 8796 [2021-06-05 08:11:58,834 INFO L226 Difference]: Without dead ends: 8526 [2021-06-05 08:11:58,835 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1647 ImplicationChecksByTransitivity, 1167.1ms TimeCoverageRelationStatistics Valid=1725, Invalid=5415, Unknown=0, NotChecked=0, Total=7140 [2021-06-05 08:11:58,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8526 states. [2021-06-05 08:11:58,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8526 to 6453. [2021-06-05 08:11:58,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6453 states, 6452 states have (on average 2.833694978301302) internal successors, (18283), 6452 states have internal predecessors, (18283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:58,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6453 states to 6453 states and 18283 transitions. [2021-06-05 08:11:58,921 INFO L78 Accepts]: Start accepts. Automaton has 6453 states and 18283 transitions. Word has length 195 [2021-06-05 08:11:58,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:11:58,921 INFO L482 AbstractCegarLoop]: Abstraction has 6453 states and 18283 transitions. [2021-06-05 08:11:58,921 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 5.131578947368421) internal successors, (195), 38 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:11:58,921 INFO L276 IsEmpty]: Start isEmpty. Operand 6453 states and 18283 transitions. [2021-06-05 08:11:58,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-06-05 08:11:58,926 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:11:58,926 INFO L521 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:11:59,127 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 536 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable540 [2021-06-05 08:11:59,127 INFO L430 AbstractCegarLoop]: === Iteration 542 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:11:59,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:11:59,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1638850148, now seen corresponding path program 533 times [2021-06-05 08:11:59,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:11:59,127 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945799363] [2021-06-05 08:11:59,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:11:59,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:11:59,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:11:59,553 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:11:59,553 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945799363] [2021-06-05 08:11:59,553 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945799363] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:11:59,553 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755381044] [2021-06-05 08:11:59,553 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 537 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 537 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:11:59,627 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2021-06-05 08:11:59,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:11:59,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 39 conjunts are in the unsatisfiable core [2021-06-05 08:11:59,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:11:59,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:11:59,860 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755381044] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:11:59,861 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:11:59,861 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 39 [2021-06-05 08:11:59,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568524672] [2021-06-05 08:11:59,861 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 08:11:59,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:11:59,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 08:11:59,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=1259, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 08:11:59,861 INFO L87 Difference]: Start difference. First operand 6453 states and 18283 transitions. Second operand has 39 states, 39 states have (on average 5.051282051282051) internal successors, (197), 39 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:01,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:12:01,041 INFO L93 Difference]: Finished difference Result 8746 states and 22997 transitions. [2021-06-05 08:12:01,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-05 08:12:01,042 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.051282051282051) internal successors, (197), 39 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2021-06-05 08:12:01,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:12:01,050 INFO L225 Difference]: With dead ends: 8746 [2021-06-05 08:12:01,051 INFO L226 Difference]: Without dead ends: 8476 [2021-06-05 08:12:01,051 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1680 ImplicationChecksByTransitivity, 1238.2ms TimeCoverageRelationStatistics Valid=1753, Invalid=5729, Unknown=0, NotChecked=0, Total=7482 [2021-06-05 08:12:01,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8476 states. [2021-06-05 08:12:01,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8476 to 6453. [2021-06-05 08:12:01,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6453 states, 6452 states have (on average 2.833694978301302) internal successors, (18283), 6452 states have internal predecessors, (18283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:01,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6453 states to 6453 states and 18283 transitions. [2021-06-05 08:12:01,133 INFO L78 Accepts]: Start accepts. Automaton has 6453 states and 18283 transitions. Word has length 195 [2021-06-05 08:12:01,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:12:01,133 INFO L482 AbstractCegarLoop]: Abstraction has 6453 states and 18283 transitions. [2021-06-05 08:12:01,133 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 5.051282051282051) internal successors, (197), 39 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:01,133 INFO L276 IsEmpty]: Start isEmpty. Operand 6453 states and 18283 transitions. [2021-06-05 08:12:01,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-06-05 08:12:01,138 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:12:01,138 INFO L521 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:12:01,339 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 537 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable541 [2021-06-05 08:12:01,339 INFO L430 AbstractCegarLoop]: === Iteration 543 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:12:01,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:12:01,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1774071542, now seen corresponding path program 534 times [2021-06-05 08:12:01,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:12:01,339 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801889722] [2021-06-05 08:12:01,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:12:01,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:12:01,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:12:01,742 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:12:01,742 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801889722] [2021-06-05 08:12:01,742 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801889722] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:12:01,742 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201122347] [2021-06-05 08:12:01,742 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 538 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 538 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:12:01,872 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2021-06-05 08:12:01,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:12:01,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 39 conjunts are in the unsatisfiable core [2021-06-05 08:12:01,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:12:02,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:12:02,095 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201122347] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:12:02,095 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:12:02,095 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2021-06-05 08:12:02,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128328929] [2021-06-05 08:12:02,095 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 08:12:02,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:12:02,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 08:12:02,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=1186, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 08:12:02,096 INFO L87 Difference]: Start difference. First operand 6453 states and 18283 transitions. Second operand has 38 states, 38 states have (on average 5.131578947368421) internal successors, (195), 38 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:03,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:12:03,139 INFO L93 Difference]: Finished difference Result 8696 states and 22897 transitions. [2021-06-05 08:12:03,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 08:12:03,139 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.131578947368421) internal successors, (195), 38 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2021-06-05 08:12:03,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:12:03,149 INFO L225 Difference]: With dead ends: 8696 [2021-06-05 08:12:03,149 INFO L226 Difference]: Without dead ends: 8426 [2021-06-05 08:12:03,150 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1780 ImplicationChecksByTransitivity, 1136.3ms TimeCoverageRelationStatistics Valid=1795, Invalid=5687, Unknown=0, NotChecked=0, Total=7482 [2021-06-05 08:12:03,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8426 states. [2021-06-05 08:12:03,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8426 to 6453. [2021-06-05 08:12:03,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6453 states, 6452 states have (on average 2.833694978301302) internal successors, (18283), 6452 states have internal predecessors, (18283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:03,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6453 states to 6453 states and 18283 transitions. [2021-06-05 08:12:03,235 INFO L78 Accepts]: Start accepts. Automaton has 6453 states and 18283 transitions. Word has length 195 [2021-06-05 08:12:03,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:12:03,235 INFO L482 AbstractCegarLoop]: Abstraction has 6453 states and 18283 transitions. [2021-06-05 08:12:03,235 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 5.131578947368421) internal successors, (195), 38 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:03,235 INFO L276 IsEmpty]: Start isEmpty. Operand 6453 states and 18283 transitions. [2021-06-05 08:12:03,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-06-05 08:12:03,240 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:12:03,241 INFO L521 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:12:03,441 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 538 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable542 [2021-06-05 08:12:03,441 INFO L430 AbstractCegarLoop]: === Iteration 544 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:12:03,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:12:03,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1644160986, now seen corresponding path program 535 times [2021-06-05 08:12:03,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:12:03,441 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945877480] [2021-06-05 08:12:03,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:12:03,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:12:03,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:12:03,959 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:12:03,959 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945877480] [2021-06-05 08:12:03,959 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945877480] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:12:03,959 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732134063] [2021-06-05 08:12:03,959 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 539 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 539 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:12:04,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:12:04,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 39 conjunts are in the unsatisfiable core [2021-06-05 08:12:04,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:12:04,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:12:04,256 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732134063] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:12:04,256 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:12:04,257 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 39 [2021-06-05 08:12:04,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582377760] [2021-06-05 08:12:04,257 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 08:12:04,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:12:04,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 08:12:04,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=1269, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 08:12:04,257 INFO L87 Difference]: Start difference. First operand 6453 states and 18283 transitions. Second operand has 39 states, 39 states have (on average 5.051282051282051) internal successors, (197), 39 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:05,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:12:05,476 INFO L93 Difference]: Finished difference Result 8646 states and 22797 transitions. [2021-06-05 08:12:05,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-05 08:12:05,477 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.051282051282051) internal successors, (197), 39 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2021-06-05 08:12:05,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:12:05,487 INFO L225 Difference]: With dead ends: 8646 [2021-06-05 08:12:05,487 INFO L226 Difference]: Without dead ends: 8376 [2021-06-05 08:12:05,487 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1816 ImplicationChecksByTransitivity, 1370.0ms TimeCoverageRelationStatistics Valid=1825, Invalid=6007, Unknown=0, NotChecked=0, Total=7832 [2021-06-05 08:12:05,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8376 states. [2021-06-05 08:12:05,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8376 to 6453. [2021-06-05 08:12:05,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6453 states, 6452 states have (on average 2.833694978301302) internal successors, (18283), 6452 states have internal predecessors, (18283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:05,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6453 states to 6453 states and 18283 transitions. [2021-06-05 08:12:05,573 INFO L78 Accepts]: Start accepts. Automaton has 6453 states and 18283 transitions. Word has length 195 [2021-06-05 08:12:05,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:12:05,573 INFO L482 AbstractCegarLoop]: Abstraction has 6453 states and 18283 transitions. [2021-06-05 08:12:05,573 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 5.051282051282051) internal successors, (197), 39 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:05,574 INFO L276 IsEmpty]: Start isEmpty. Operand 6453 states and 18283 transitions. [2021-06-05 08:12:05,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-06-05 08:12:05,579 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:12:05,579 INFO L521 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:12:05,779 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 539 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable543 [2021-06-05 08:12:05,779 INFO L430 AbstractCegarLoop]: === Iteration 545 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:12:05,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:12:05,780 INFO L82 PathProgramCache]: Analyzing trace with hash -93165368, now seen corresponding path program 536 times [2021-06-05 08:12:05,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:12:05,780 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054062630] [2021-06-05 08:12:05,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:12:05,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:12:06,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:12:06,170 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:12:06,170 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054062630] [2021-06-05 08:12:06,170 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054062630] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:12:06,170 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752138179] [2021-06-05 08:12:06,170 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 540 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 540 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:12:06,238 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:12:06,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:12:06,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 39 conjunts are in the unsatisfiable core [2021-06-05 08:12:06,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:12:06,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:12:06,452 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752138179] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:12:06,452 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:12:06,453 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2021-06-05 08:12:06,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321173815] [2021-06-05 08:12:06,453 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 08:12:06,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:12:06,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 08:12:06,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=1193, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 08:12:06,453 INFO L87 Difference]: Start difference. First operand 6453 states and 18283 transitions. Second operand has 38 states, 38 states have (on average 5.131578947368421) internal successors, (195), 38 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:07,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:12:07,729 INFO L93 Difference]: Finished difference Result 8596 states and 22697 transitions. [2021-06-05 08:12:07,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-05 08:12:07,729 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.131578947368421) internal successors, (195), 38 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2021-06-05 08:12:07,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:12:07,738 INFO L225 Difference]: With dead ends: 8596 [2021-06-05 08:12:07,738 INFO L226 Difference]: Without dead ends: 8326 [2021-06-05 08:12:07,738 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1917 ImplicationChecksByTransitivity, 1235.7ms TimeCoverageRelationStatistics Valid=1881, Invalid=5951, Unknown=0, NotChecked=0, Total=7832 [2021-06-05 08:12:07,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8326 states. [2021-06-05 08:12:07,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8326 to 6453. [2021-06-05 08:12:07,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6453 states, 6452 states have (on average 2.833694978301302) internal successors, (18283), 6452 states have internal predecessors, (18283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:07,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6453 states to 6453 states and 18283 transitions. [2021-06-05 08:12:07,820 INFO L78 Accepts]: Start accepts. Automaton has 6453 states and 18283 transitions. Word has length 195 [2021-06-05 08:12:07,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:12:07,820 INFO L482 AbstractCegarLoop]: Abstraction has 6453 states and 18283 transitions. [2021-06-05 08:12:07,820 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 5.131578947368421) internal successors, (195), 38 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:07,820 INFO L276 IsEmpty]: Start isEmpty. Operand 6453 states and 18283 transitions. [2021-06-05 08:12:07,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-06-05 08:12:07,826 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:12:07,826 INFO L521 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:12:08,041 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable544,540 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:12:08,041 INFO L430 AbstractCegarLoop]: === Iteration 546 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:12:08,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:12:08,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1271382936, now seen corresponding path program 537 times [2021-06-05 08:12:08,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:12:08,041 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29785426] [2021-06-05 08:12:08,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:12:08,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:12:08,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:12:08,477 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:12:08,477 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29785426] [2021-06-05 08:12:08,477 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29785426] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:12:08,477 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087356647] [2021-06-05 08:12:08,477 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 541 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 541 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:12:08,576 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2021-06-05 08:12:08,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:12:08,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 58 conjunts are in the unsatisfiable core [2021-06-05 08:12:08,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:12:08,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:12:08,828 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087356647] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:12:08,829 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:12:08,829 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 39 [2021-06-05 08:12:08,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637995154] [2021-06-05 08:12:08,829 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 08:12:08,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:12:08,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 08:12:08,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=1275, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 08:12:08,829 INFO L87 Difference]: Start difference. First operand 6453 states and 18283 transitions. Second operand has 39 states, 39 states have (on average 5.051282051282051) internal successors, (197), 39 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:10,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:12:10,278 INFO L93 Difference]: Finished difference Result 8546 states and 22597 transitions. [2021-06-05 08:12:10,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-06-05 08:12:10,278 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.051282051282051) internal successors, (197), 39 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2021-06-05 08:12:10,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:12:10,288 INFO L225 Difference]: With dead ends: 8546 [2021-06-05 08:12:10,288 INFO L226 Difference]: Without dead ends: 8276 [2021-06-05 08:12:10,289 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1919 ImplicationChecksByTransitivity, 1499.9ms TimeCoverageRelationStatistics Valid=1847, Invalid=6343, Unknown=0, NotChecked=0, Total=8190 [2021-06-05 08:12:10,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8276 states. [2021-06-05 08:12:10,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8276 to 6453. [2021-06-05 08:12:10,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6453 states, 6452 states have (on average 2.833694978301302) internal successors, (18283), 6452 states have internal predecessors, (18283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:10,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6453 states to 6453 states and 18283 transitions. [2021-06-05 08:12:10,375 INFO L78 Accepts]: Start accepts. Automaton has 6453 states and 18283 transitions. Word has length 195 [2021-06-05 08:12:10,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:12:10,376 INFO L482 AbstractCegarLoop]: Abstraction has 6453 states and 18283 transitions. [2021-06-05 08:12:10,376 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 5.051282051282051) internal successors, (197), 39 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:10,376 INFO L276 IsEmpty]: Start isEmpty. Operand 6453 states and 18283 transitions. [2021-06-05 08:12:10,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-06-05 08:12:10,381 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:12:10,381 INFO L521 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:12:10,597 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 541 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable545 [2021-06-05 08:12:10,598 INFO L430 AbstractCegarLoop]: === Iteration 547 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:12:10,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:12:10,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1005849082, now seen corresponding path program 538 times [2021-06-05 08:12:10,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:12:10,598 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554530751] [2021-06-05 08:12:10,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:12:10,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:12:11,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:12:11,004 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:12:11,004 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554530751] [2021-06-05 08:12:11,004 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554530751] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:12:11,004 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414744608] [2021-06-05 08:12:11,004 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 542 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 542 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:12:11,085 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:12:11,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:12:11,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 39 conjunts are in the unsatisfiable core [2021-06-05 08:12:11,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:12:11,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:12:11,354 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414744608] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:12:11,354 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:12:11,354 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2021-06-05 08:12:11,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174697847] [2021-06-05 08:12:11,355 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 08:12:11,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:12:11,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 08:12:11,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=1196, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 08:12:11,355 INFO L87 Difference]: Start difference. First operand 6453 states and 18283 transitions. Second operand has 38 states, 38 states have (on average 5.131578947368421) internal successors, (195), 38 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:12,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:12:12,511 INFO L93 Difference]: Finished difference Result 8496 states and 22497 transitions. [2021-06-05 08:12:12,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-05 08:12:12,511 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.131578947368421) internal successors, (195), 38 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2021-06-05 08:12:12,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:12:12,521 INFO L225 Difference]: With dead ends: 8496 [2021-06-05 08:12:12,521 INFO L226 Difference]: Without dead ends: 8226 [2021-06-05 08:12:12,522 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2058 ImplicationChecksByTransitivity, 1236.3ms TimeCoverageRelationStatistics Valid=1983, Invalid=6207, Unknown=0, NotChecked=0, Total=8190 [2021-06-05 08:12:12,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8226 states. [2021-06-05 08:12:12,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8226 to 6453. [2021-06-05 08:12:12,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6453 states, 6452 states have (on average 2.833694978301302) internal successors, (18283), 6452 states have internal predecessors, (18283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:12,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6453 states to 6453 states and 18283 transitions. [2021-06-05 08:12:12,609 INFO L78 Accepts]: Start accepts. Automaton has 6453 states and 18283 transitions. Word has length 195 [2021-06-05 08:12:12,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:12:12,609 INFO L482 AbstractCegarLoop]: Abstraction has 6453 states and 18283 transitions. [2021-06-05 08:12:12,610 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 5.131578947368421) internal successors, (195), 38 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:12,610 INFO L276 IsEmpty]: Start isEmpty. Operand 6453 states and 18283 transitions. [2021-06-05 08:12:12,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-06-05 08:12:12,615 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:12:12,615 INFO L521 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:12:12,829 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable546,542 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:12:12,829 INFO L430 AbstractCegarLoop]: === Iteration 548 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:12:12,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:12:12,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1904372522, now seen corresponding path program 539 times [2021-06-05 08:12:12,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:12:12,829 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966164275] [2021-06-05 08:12:12,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:12:12,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:12:13,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:12:13,240 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:12:13,240 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966164275] [2021-06-05 08:12:13,240 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966164275] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:12:13,241 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618080109] [2021-06-05 08:12:13,241 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 543 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 543 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:12:13,325 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2021-06-05 08:12:13,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:12:13,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 39 conjunts are in the unsatisfiable core [2021-06-05 08:12:13,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:12:13,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:12:13,603 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618080109] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:12:13,603 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:12:13,603 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 39 [2021-06-05 08:12:13,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233880811] [2021-06-05 08:12:13,604 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 08:12:13,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:12:13,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 08:12:13,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=1277, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 08:12:13,604 INFO L87 Difference]: Start difference. First operand 6453 states and 18283 transitions. Second operand has 39 states, 39 states have (on average 5.051282051282051) internal successors, (197), 39 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:15,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:12:15,009 INFO L93 Difference]: Finished difference Result 8446 states and 22397 transitions. [2021-06-05 08:12:15,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-05 08:12:15,010 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.051282051282051) internal successors, (197), 39 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2021-06-05 08:12:15,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:12:15,018 INFO L225 Difference]: With dead ends: 8446 [2021-06-05 08:12:15,019 INFO L226 Difference]: Without dead ends: 8176 [2021-06-05 08:12:15,019 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2100 ImplicationChecksByTransitivity, 1475.0ms TimeCoverageRelationStatistics Valid=2017, Invalid=6539, Unknown=0, NotChecked=0, Total=8556 [2021-06-05 08:12:15,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8176 states. [2021-06-05 08:12:15,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8176 to 6453. [2021-06-05 08:12:15,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6453 states, 6452 states have (on average 2.833694978301302) internal successors, (18283), 6452 states have internal predecessors, (18283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:15,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6453 states to 6453 states and 18283 transitions. [2021-06-05 08:12:15,098 INFO L78 Accepts]: Start accepts. Automaton has 6453 states and 18283 transitions. Word has length 195 [2021-06-05 08:12:15,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:12:15,098 INFO L482 AbstractCegarLoop]: Abstraction has 6453 states and 18283 transitions. [2021-06-05 08:12:15,098 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 5.051282051282051) internal successors, (197), 39 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:15,098 INFO L276 IsEmpty]: Start isEmpty. Operand 6453 states and 18283 transitions. [2021-06-05 08:12:15,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-06-05 08:12:15,103 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:12:15,103 INFO L521 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:12:15,320 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 543 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable547 [2021-06-05 08:12:15,320 INFO L430 AbstractCegarLoop]: === Iteration 549 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:12:15,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:12:15,320 INFO L82 PathProgramCache]: Analyzing trace with hash 775641284, now seen corresponding path program 540 times [2021-06-05 08:12:15,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:12:15,320 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961428811] [2021-06-05 08:12:15,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:12:15,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:12:15,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:12:15,713 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:12:15,713 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961428811] [2021-06-05 08:12:15,713 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961428811] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:12:15,713 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794479571] [2021-06-05 08:12:15,713 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 544 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 544 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:12:15,809 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2021-06-05 08:12:15,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:12:15,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 39 conjunts are in the unsatisfiable core [2021-06-05 08:12:15,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:12:16,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:12:16,022 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794479571] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:12:16,022 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:12:16,022 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2021-06-05 08:12:16,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829858665] [2021-06-05 08:12:16,022 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 08:12:16,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:12:16,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 08:12:16,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=1195, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 08:12:16,022 INFO L87 Difference]: Start difference. First operand 6453 states and 18283 transitions. Second operand has 38 states, 38 states have (on average 5.131578947368421) internal successors, (195), 38 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:17,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:12:17,267 INFO L93 Difference]: Finished difference Result 8396 states and 22297 transitions. [2021-06-05 08:12:17,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-06-05 08:12:17,268 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.131578947368421) internal successors, (195), 38 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2021-06-05 08:12:17,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:12:17,278 INFO L225 Difference]: With dead ends: 8396 [2021-06-05 08:12:17,278 INFO L226 Difference]: Without dead ends: 8126 [2021-06-05 08:12:17,279 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2203 ImplicationChecksByTransitivity, 1294.0ms TimeCoverageRelationStatistics Valid=2101, Invalid=6455, Unknown=0, NotChecked=0, Total=8556 [2021-06-05 08:12:17,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8126 states. [2021-06-05 08:12:17,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8126 to 6453. [2021-06-05 08:12:17,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6453 states, 6452 states have (on average 2.833694978301302) internal successors, (18283), 6452 states have internal predecessors, (18283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:17,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6453 states to 6453 states and 18283 transitions. [2021-06-05 08:12:17,363 INFO L78 Accepts]: Start accepts. Automaton has 6453 states and 18283 transitions. Word has length 195 [2021-06-05 08:12:17,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:12:17,363 INFO L482 AbstractCegarLoop]: Abstraction has 6453 states and 18283 transitions. [2021-06-05 08:12:17,363 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 5.131578947368421) internal successors, (195), 38 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:17,363 INFO L276 IsEmpty]: Start isEmpty. Operand 6453 states and 18283 transitions. [2021-06-05 08:12:17,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-06-05 08:12:17,369 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:12:17,369 INFO L521 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:12:17,585 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable548,544 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:12:17,585 INFO L430 AbstractCegarLoop]: === Iteration 550 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:12:17,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:12:17,585 INFO L82 PathProgramCache]: Analyzing trace with hash 395197332, now seen corresponding path program 541 times [2021-06-05 08:12:17,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:12:17,585 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709753223] [2021-06-05 08:12:17,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:12:17,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:12:17,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:12:17,987 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:12:17,987 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709753223] [2021-06-05 08:12:17,987 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709753223] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:12:17,987 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750946077] [2021-06-05 08:12:17,987 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 545 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 545 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:12:18,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:12:18,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 39 conjunts are in the unsatisfiable core [2021-06-05 08:12:18,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:12:18,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:12:18,381 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750946077] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:12:18,381 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:12:18,381 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 39 [2021-06-05 08:12:18,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363987654] [2021-06-05 08:12:18,381 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 08:12:18,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:12:18,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 08:12:18,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=1275, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 08:12:18,382 INFO L87 Difference]: Start difference. First operand 6453 states and 18283 transitions. Second operand has 39 states, 39 states have (on average 5.051282051282051) internal successors, (197), 39 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:19,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:12:19,880 INFO L93 Difference]: Finished difference Result 8346 states and 22197 transitions. [2021-06-05 08:12:19,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-06-05 08:12:19,881 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.051282051282051) internal successors, (197), 39 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2021-06-05 08:12:19,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:12:19,891 INFO L225 Difference]: With dead ends: 8346 [2021-06-05 08:12:19,891 INFO L226 Difference]: Without dead ends: 8076 [2021-06-05 08:12:19,892 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2248 ImplicationChecksByTransitivity, 1524.7ms TimeCoverageRelationStatistics Valid=2137, Invalid=6793, Unknown=0, NotChecked=0, Total=8930 [2021-06-05 08:12:19,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8076 states. [2021-06-05 08:12:19,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8076 to 6453. [2021-06-05 08:12:19,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6453 states, 6452 states have (on average 2.833694978301302) internal successors, (18283), 6452 states have internal predecessors, (18283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:19,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6453 states to 6453 states and 18283 transitions. [2021-06-05 08:12:19,977 INFO L78 Accepts]: Start accepts. Automaton has 6453 states and 18283 transitions. Word has length 195 [2021-06-05 08:12:19,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:12:19,977 INFO L482 AbstractCegarLoop]: Abstraction has 6453 states and 18283 transitions. [2021-06-05 08:12:19,977 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 5.051282051282051) internal successors, (197), 39 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:19,977 INFO L276 IsEmpty]: Start isEmpty. Operand 6453 states and 18283 transitions. [2021-06-05 08:12:19,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-06-05 08:12:19,983 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:12:19,983 INFO L521 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:12:20,199 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 545 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable549 [2021-06-05 08:12:20,200 INFO L430 AbstractCegarLoop]: === Iteration 551 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:12:20,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:12:20,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1019572482, now seen corresponding path program 542 times [2021-06-05 08:12:20,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:12:20,200 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730345399] [2021-06-05 08:12:20,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:12:20,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:12:20,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:12:20,590 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:12:20,590 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730345399] [2021-06-05 08:12:20,590 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730345399] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:12:20,590 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074557179] [2021-06-05 08:12:20,590 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 546 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 546 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:12:20,665 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:12:20,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:12:20,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 39 conjunts are in the unsatisfiable core [2021-06-05 08:12:20,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:12:20,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:12:20,873 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074557179] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:12:20,873 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:12:20,873 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2021-06-05 08:12:20,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129381199] [2021-06-05 08:12:20,873 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 08:12:20,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:12:20,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 08:12:20,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=1190, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 08:12:20,874 INFO L87 Difference]: Start difference. First operand 6453 states and 18283 transitions. Second operand has 38 states, 38 states have (on average 5.131578947368421) internal successors, (195), 38 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:22,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:12:22,131 INFO L93 Difference]: Finished difference Result 8296 states and 22097 transitions. [2021-06-05 08:12:22,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-05 08:12:22,131 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.131578947368421) internal successors, (195), 38 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2021-06-05 08:12:22,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:12:22,138 INFO L225 Difference]: With dead ends: 8296 [2021-06-05 08:12:22,138 INFO L226 Difference]: Without dead ends: 8026 [2021-06-05 08:12:22,139 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2352 ImplicationChecksByTransitivity, 1326.5ms TimeCoverageRelationStatistics Valid=2235, Invalid=6695, Unknown=0, NotChecked=0, Total=8930 [2021-06-05 08:12:22,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8026 states. [2021-06-05 08:12:22,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8026 to 6453. [2021-06-05 08:12:22,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6453 states, 6452 states have (on average 2.833694978301302) internal successors, (18283), 6452 states have internal predecessors, (18283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:22,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6453 states to 6453 states and 18283 transitions. [2021-06-05 08:12:22,212 INFO L78 Accepts]: Start accepts. Automaton has 6453 states and 18283 transitions. Word has length 195 [2021-06-05 08:12:22,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:12:22,212 INFO L482 AbstractCegarLoop]: Abstraction has 6453 states and 18283 transitions. [2021-06-05 08:12:22,212 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 5.131578947368421) internal successors, (195), 38 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:22,212 INFO L276 IsEmpty]: Start isEmpty. Operand 6453 states and 18283 transitions. [2021-06-05 08:12:22,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-06-05 08:12:22,217 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:12:22,218 INFO L521 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:12:22,418 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable550,546 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:12:22,418 INFO L430 AbstractCegarLoop]: === Iteration 552 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:12:22,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:12:22,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1828624338, now seen corresponding path program 543 times [2021-06-05 08:12:22,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:12:22,418 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422835551] [2021-06-05 08:12:22,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:12:22,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:12:22,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:12:22,816 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:12:22,816 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422835551] [2021-06-05 08:12:22,816 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422835551] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:12:22,816 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563738961] [2021-06-05 08:12:22,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 547 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 547 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:12:22,916 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2021-06-05 08:12:22,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:12:22,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 52 conjunts are in the unsatisfiable core [2021-06-05 08:12:22,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:12:23,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:12:23,137 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563738961] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:12:23,137 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:12:23,137 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 39 [2021-06-05 08:12:23,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293092824] [2021-06-05 08:12:23,137 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 08:12:23,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:12:23,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 08:12:23,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=1269, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 08:12:23,137 INFO L87 Difference]: Start difference. First operand 6453 states and 18283 transitions. Second operand has 39 states, 39 states have (on average 5.051282051282051) internal successors, (197), 39 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:24,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:12:24,661 INFO L93 Difference]: Finished difference Result 8246 states and 21997 transitions. [2021-06-05 08:12:24,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-06-05 08:12:24,661 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.051282051282051) internal successors, (197), 39 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2021-06-05 08:12:24,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:12:24,671 INFO L225 Difference]: With dead ends: 8246 [2021-06-05 08:12:24,671 INFO L226 Difference]: Without dead ends: 7976 [2021-06-05 08:12:24,672 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2330 ImplicationChecksByTransitivity, 1497.2ms TimeCoverageRelationStatistics Valid=2135, Invalid=7177, Unknown=0, NotChecked=0, Total=9312 [2021-06-05 08:12:24,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7976 states. [2021-06-05 08:12:24,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7976 to 6453. [2021-06-05 08:12:24,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6453 states, 6452 states have (on average 2.833694978301302) internal successors, (18283), 6452 states have internal predecessors, (18283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:24,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6453 states to 6453 states and 18283 transitions. [2021-06-05 08:12:24,760 INFO L78 Accepts]: Start accepts. Automaton has 6453 states and 18283 transitions. Word has length 195 [2021-06-05 08:12:24,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:12:24,760 INFO L482 AbstractCegarLoop]: Abstraction has 6453 states and 18283 transitions. [2021-06-05 08:12:24,760 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 5.051282051282051) internal successors, (197), 39 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:24,760 INFO L276 IsEmpty]: Start isEmpty. Operand 6453 states and 18283 transitions. [2021-06-05 08:12:24,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-06-05 08:12:24,766 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:12:24,766 INFO L521 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:12:24,982 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable551,547 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:12:24,982 INFO L430 AbstractCegarLoop]: === Iteration 553 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:12:24,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:12:24,982 INFO L82 PathProgramCache]: Analyzing trace with hash 436674240, now seen corresponding path program 544 times [2021-06-05 08:12:24,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:12:24,983 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751111119] [2021-06-05 08:12:24,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:12:24,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:12:25,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:12:25,357 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:12:25,357 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751111119] [2021-06-05 08:12:25,357 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751111119] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:12:25,358 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41743412] [2021-06-05 08:12:25,358 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 548 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 548 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:12:25,444 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:12:25,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:12:25,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 39 conjunts are in the unsatisfiable core [2021-06-05 08:12:25,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:12:25,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:12:25,710 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41743412] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:12:25,710 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:12:25,710 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2021-06-05 08:12:25,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971433029] [2021-06-05 08:12:25,710 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 08:12:25,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:12:25,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 08:12:25,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=1181, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 08:12:25,710 INFO L87 Difference]: Start difference. First operand 6453 states and 18283 transitions. Second operand has 38 states, 38 states have (on average 5.131578947368421) internal successors, (195), 38 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:27,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:12:27,290 INFO L93 Difference]: Finished difference Result 8196 states and 21897 transitions. [2021-06-05 08:12:27,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-06-05 08:12:27,290 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.131578947368421) internal successors, (195), 38 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2021-06-05 08:12:27,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:12:27,300 INFO L225 Difference]: With dead ends: 8196 [2021-06-05 08:12:27,300 INFO L226 Difference]: Without dead ends: 7926 [2021-06-05 08:12:27,301 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2505 ImplicationChecksByTransitivity, 1468.1ms TimeCoverageRelationStatistics Valid=2385, Invalid=6927, Unknown=0, NotChecked=0, Total=9312 [2021-06-05 08:12:27,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7926 states. [2021-06-05 08:12:27,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7926 to 6453. [2021-06-05 08:12:27,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6453 states, 6452 states have (on average 2.833694978301302) internal successors, (18283), 6452 states have internal predecessors, (18283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:27,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6453 states to 6453 states and 18283 transitions. [2021-06-05 08:12:27,391 INFO L78 Accepts]: Start accepts. Automaton has 6453 states and 18283 transitions. Word has length 195 [2021-06-05 08:12:27,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:12:27,391 INFO L482 AbstractCegarLoop]: Abstraction has 6453 states and 18283 transitions. [2021-06-05 08:12:27,391 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 5.131578947368421) internal successors, (195), 38 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:27,391 INFO L276 IsEmpty]: Start isEmpty. Operand 6453 states and 18283 transitions. [2021-06-05 08:12:27,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-06-05 08:12:27,397 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:12:27,397 INFO L521 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:12:27,613 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 548 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable552 [2021-06-05 08:12:27,613 INFO L430 AbstractCegarLoop]: === Iteration 554 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:12:27,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:12:27,613 INFO L82 PathProgramCache]: Analyzing trace with hash 191596944, now seen corresponding path program 545 times [2021-06-05 08:12:27,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:12:27,613 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142547420] [2021-06-05 08:12:27,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:12:27,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:12:28,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:12:28,022 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:12:28,022 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142547420] [2021-06-05 08:12:28,022 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142547420] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:12:28,022 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556998368] [2021-06-05 08:12:28,022 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 549 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 549 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:12:28,119 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2021-06-05 08:12:28,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:12:28,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 39 conjunts are in the unsatisfiable core [2021-06-05 08:12:28,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:12:28,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:12:28,365 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556998368] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:12:28,365 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:12:28,366 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 39 [2021-06-05 08:12:28,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295168380] [2021-06-05 08:12:28,366 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 08:12:28,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:12:28,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 08:12:28,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=1259, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 08:12:28,366 INFO L87 Difference]: Start difference. First operand 6453 states and 18283 transitions. Second operand has 39 states, 39 states have (on average 5.051282051282051) internal successors, (197), 39 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:30,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:12:30,214 INFO L93 Difference]: Finished difference Result 8146 states and 21797 transitions. [2021-06-05 08:12:30,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-05 08:12:30,214 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.051282051282051) internal successors, (197), 39 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2021-06-05 08:12:30,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:12:30,222 INFO L225 Difference]: With dead ends: 8146 [2021-06-05 08:12:30,223 INFO L226 Difference]: Without dead ends: 7876 [2021-06-05 08:12:30,223 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2556 ImplicationChecksByTransitivity, 1745.5ms TimeCoverageRelationStatistics Valid=2425, Invalid=7277, Unknown=0, NotChecked=0, Total=9702 [2021-06-05 08:12:30,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7876 states. [2021-06-05 08:12:30,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7876 to 6453. [2021-06-05 08:12:30,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6453 states, 6452 states have (on average 2.833694978301302) internal successors, (18283), 6452 states have internal predecessors, (18283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:30,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6453 states to 6453 states and 18283 transitions. [2021-06-05 08:12:30,304 INFO L78 Accepts]: Start accepts. Automaton has 6453 states and 18283 transitions. Word has length 195 [2021-06-05 08:12:30,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:12:30,305 INFO L482 AbstractCegarLoop]: Abstraction has 6453 states and 18283 transitions. [2021-06-05 08:12:30,305 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 5.051282051282051) internal successors, (197), 39 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:30,305 INFO L276 IsEmpty]: Start isEmpty. Operand 6453 states and 18283 transitions. [2021-06-05 08:12:30,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-06-05 08:12:30,310 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:12:30,310 INFO L521 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:12:30,527 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable553,549 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:12:30,527 INFO L430 AbstractCegarLoop]: === Iteration 555 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:12:30,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:12:30,527 INFO L82 PathProgramCache]: Analyzing trace with hash -185253378, now seen corresponding path program 546 times [2021-06-05 08:12:30,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:12:30,527 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422835406] [2021-06-05 08:12:30,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:12:30,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:12:30,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:12:30,924 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:12:30,924 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422835406] [2021-06-05 08:12:30,924 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422835406] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:12:30,924 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512781494] [2021-06-05 08:12:30,925 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 550 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 550 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:12:31,020 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2021-06-05 08:12:31,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:12:31,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 48 conjunts are in the unsatisfiable core [2021-06-05 08:12:31,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:12:31,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:12:31,234 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512781494] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:12:31,234 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:12:31,234 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2021-06-05 08:12:31,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513688253] [2021-06-05 08:12:31,234 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 08:12:31,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:12:31,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 08:12:31,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=1168, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 08:12:31,235 INFO L87 Difference]: Start difference. First operand 6453 states and 18283 transitions. Second operand has 38 states, 38 states have (on average 5.131578947368421) internal successors, (195), 38 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:32,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:12:32,642 INFO L93 Difference]: Finished difference Result 8096 states and 21697 transitions. [2021-06-05 08:12:32,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-05 08:12:32,642 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.131578947368421) internal successors, (195), 38 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2021-06-05 08:12:32,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:12:32,651 INFO L225 Difference]: With dead ends: 8096 [2021-06-05 08:12:32,651 INFO L226 Difference]: Without dead ends: 7826 [2021-06-05 08:12:32,652 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2662 ImplicationChecksByTransitivity, 1341.7ms TimeCoverageRelationStatistics Valid=2551, Invalid=7151, Unknown=0, NotChecked=0, Total=9702 [2021-06-05 08:12:32,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7826 states. [2021-06-05 08:12:32,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7826 to 6453. [2021-06-05 08:12:32,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6453 states, 6452 states have (on average 2.833694978301302) internal successors, (18283), 6452 states have internal predecessors, (18283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:32,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6453 states to 6453 states and 18283 transitions. [2021-06-05 08:12:32,733 INFO L78 Accepts]: Start accepts. Automaton has 6453 states and 18283 transitions. Word has length 195 [2021-06-05 08:12:32,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:12:32,733 INFO L482 AbstractCegarLoop]: Abstraction has 6453 states and 18283 transitions. [2021-06-05 08:12:32,734 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 5.131578947368421) internal successors, (195), 38 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:32,734 INFO L276 IsEmpty]: Start isEmpty. Operand 6453 states and 18283 transitions. [2021-06-05 08:12:32,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-06-05 08:12:32,739 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:12:32,739 INFO L521 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:12:32,950 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 550 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable554 [2021-06-05 08:12:32,951 INFO L430 AbstractCegarLoop]: === Iteration 556 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:12:32,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:12:32,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1141502158, now seen corresponding path program 547 times [2021-06-05 08:12:32,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:12:32,951 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116620451] [2021-06-05 08:12:32,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:12:32,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:12:33,527 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:12:33,528 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:12:33,528 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116620451] [2021-06-05 08:12:33,528 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116620451] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:12:33,528 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549668837] [2021-06-05 08:12:33,528 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 551 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 551 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:12:33,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:12:33,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 39 conjunts are in the unsatisfiable core [2021-06-05 08:12:33,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:12:33,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:12:33,830 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549668837] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:12:33,830 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:12:33,830 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 39 [2021-06-05 08:12:33,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668059413] [2021-06-05 08:12:33,830 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 08:12:33,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:12:33,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 08:12:33,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=1245, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 08:12:33,831 INFO L87 Difference]: Start difference. First operand 6453 states and 18283 transitions. Second operand has 39 states, 39 states have (on average 5.051282051282051) internal successors, (197), 39 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:35,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:12:35,681 INFO L93 Difference]: Finished difference Result 8046 states and 21597 transitions. [2021-06-05 08:12:35,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-06-05 08:12:35,681 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.051282051282051) internal successors, (197), 39 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2021-06-05 08:12:35,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:12:35,691 INFO L225 Difference]: With dead ends: 8046 [2021-06-05 08:12:35,691 INFO L226 Difference]: Without dead ends: 7776 [2021-06-05 08:12:35,692 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2716 ImplicationChecksByTransitivity, 1869.2ms TimeCoverageRelationStatistics Valid=2593, Invalid=7507, Unknown=0, NotChecked=0, Total=10100 [2021-06-05 08:12:35,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7776 states. [2021-06-05 08:12:35,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7776 to 6453. [2021-06-05 08:12:35,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6453 states, 6452 states have (on average 2.833694978301302) internal successors, (18283), 6452 states have internal predecessors, (18283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:35,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6453 states to 6453 states and 18283 transitions. [2021-06-05 08:12:35,774 INFO L78 Accepts]: Start accepts. Automaton has 6453 states and 18283 transitions. Word has length 195 [2021-06-05 08:12:35,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:12:35,774 INFO L482 AbstractCegarLoop]: Abstraction has 6453 states and 18283 transitions. [2021-06-05 08:12:35,774 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 5.051282051282051) internal successors, (197), 39 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:35,774 INFO L276 IsEmpty]: Start isEmpty. Operand 6453 states and 18283 transitions. [2021-06-05 08:12:35,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-06-05 08:12:35,779 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:12:35,779 INFO L521 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:12:35,996 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable555,551 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:12:35,996 INFO L430 AbstractCegarLoop]: === Iteration 557 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:12:35,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:12:35,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1595718332, now seen corresponding path program 548 times [2021-06-05 08:12:35,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:12:35,996 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515688833] [2021-06-05 08:12:35,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:12:36,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:12:36,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:12:36,376 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:12:36,376 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515688833] [2021-06-05 08:12:36,376 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515688833] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:12:36,376 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208536265] [2021-06-05 08:12:36,376 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 552 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 552 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:12:36,467 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:12:36,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:12:36,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 39 conjunts are in the unsatisfiable core [2021-06-05 08:12:36,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:12:36,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:12:36,673 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208536265] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:12:36,673 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:12:36,673 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2021-06-05 08:12:36,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081177283] [2021-06-05 08:12:36,673 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 08:12:36,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:12:36,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 08:12:36,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=1151, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 08:12:36,674 INFO L87 Difference]: Start difference. First operand 6453 states and 18283 transitions. Second operand has 38 states, 38 states have (on average 5.131578947368421) internal successors, (195), 38 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:38,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:12:38,229 INFO L93 Difference]: Finished difference Result 7996 states and 21497 transitions. [2021-06-05 08:12:38,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-06-05 08:12:38,229 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.131578947368421) internal successors, (195), 38 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2021-06-05 08:12:38,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:12:38,237 INFO L225 Difference]: With dead ends: 7996 [2021-06-05 08:12:38,237 INFO L226 Difference]: Without dead ends: 7726 [2021-06-05 08:12:38,238 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2823 ImplicationChecksByTransitivity, 1479.5ms TimeCoverageRelationStatistics Valid=2733, Invalid=7367, Unknown=0, NotChecked=0, Total=10100 [2021-06-05 08:12:38,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7726 states. [2021-06-05 08:12:38,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7726 to 6453. [2021-06-05 08:12:38,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6453 states, 6452 states have (on average 2.833694978301302) internal successors, (18283), 6452 states have internal predecessors, (18283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:38,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6453 states to 6453 states and 18283 transitions. [2021-06-05 08:12:38,316 INFO L78 Accepts]: Start accepts. Automaton has 6453 states and 18283 transitions. Word has length 195 [2021-06-05 08:12:38,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:12:38,316 INFO L482 AbstractCegarLoop]: Abstraction has 6453 states and 18283 transitions. [2021-06-05 08:12:38,316 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 5.131578947368421) internal successors, (195), 38 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:38,316 INFO L276 IsEmpty]: Start isEmpty. Operand 6453 states and 18283 transitions. [2021-06-05 08:12:38,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-06-05 08:12:38,321 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:12:38,321 INFO L521 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:12:38,521 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 552 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable556 [2021-06-05 08:12:38,522 INFO L430 AbstractCegarLoop]: === Iteration 558 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:12:38,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:12:38,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1700352628, now seen corresponding path program 549 times [2021-06-05 08:12:38,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:12:38,522 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271132243] [2021-06-05 08:12:38,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:12:38,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:12:38,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:12:38,913 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:12:38,913 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271132243] [2021-06-05 08:12:38,913 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271132243] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:12:38,913 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984311660] [2021-06-05 08:12:38,913 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 553 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 553 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:12:39,001 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2021-06-05 08:12:39,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:12:39,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 46 conjunts are in the unsatisfiable core [2021-06-05 08:12:39,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:12:39,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:12:39,224 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984311660] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:12:39,224 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:12:39,224 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 39 [2021-06-05 08:12:39,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029185690] [2021-06-05 08:12:39,224 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 08:12:39,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:12:39,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 08:12:39,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=1227, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 08:12:39,225 INFO L87 Difference]: Start difference. First operand 6453 states and 18283 transitions. Second operand has 39 states, 39 states have (on average 5.051282051282051) internal successors, (197), 39 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:40,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:12:40,946 INFO L93 Difference]: Finished difference Result 7946 states and 21397 transitions. [2021-06-05 08:12:40,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-06-05 08:12:40,946 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.051282051282051) internal successors, (197), 39 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2021-06-05 08:12:40,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:12:41,004 INFO L225 Difference]: With dead ends: 7946 [2021-06-05 08:12:41,004 INFO L226 Difference]: Without dead ends: 7676 [2021-06-05 08:12:41,004 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2768 ImplicationChecksByTransitivity, 1628.3ms TimeCoverageRelationStatistics Valid=2540, Invalid=7966, Unknown=0, NotChecked=0, Total=10506 [2021-06-05 08:12:41,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7676 states. [2021-06-05 08:12:41,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7676 to 6453. [2021-06-05 08:12:41,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6453 states, 6452 states have (on average 2.833694978301302) internal successors, (18283), 6452 states have internal predecessors, (18283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:41,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6453 states to 6453 states and 18283 transitions. [2021-06-05 08:12:41,079 INFO L78 Accepts]: Start accepts. Automaton has 6453 states and 18283 transitions. Word has length 195 [2021-06-05 08:12:41,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:12:41,080 INFO L482 AbstractCegarLoop]: Abstraction has 6453 states and 18283 transitions. [2021-06-05 08:12:41,080 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 5.051282051282051) internal successors, (197), 39 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:41,080 INFO L276 IsEmpty]: Start isEmpty. Operand 6453 states and 18283 transitions. [2021-06-05 08:12:41,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-06-05 08:12:41,085 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:12:41,085 INFO L521 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:12:41,302 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable557,553 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:12:41,302 INFO L430 AbstractCegarLoop]: === Iteration 559 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:12:41,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:12:41,302 INFO L82 PathProgramCache]: Analyzing trace with hash 715286778, now seen corresponding path program 550 times [2021-06-05 08:12:41,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:12:41,302 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218195562] [2021-06-05 08:12:41,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:12:41,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:12:41,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:12:41,677 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:12:41,677 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218195562] [2021-06-05 08:12:41,677 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218195562] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:12:41,677 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654618265] [2021-06-05 08:12:41,677 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 554 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 554 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:12:41,746 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:12:41,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:12:41,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 39 conjunts are in the unsatisfiable core [2021-06-05 08:12:41,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:12:41,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:12:41,955 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654618265] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:12:41,955 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:12:41,955 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2021-06-05 08:12:41,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413170791] [2021-06-05 08:12:41,955 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 08:12:41,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:12:41,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 08:12:41,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=1130, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 08:12:41,956 INFO L87 Difference]: Start difference. First operand 6453 states and 18283 transitions. Second operand has 38 states, 38 states have (on average 5.131578947368421) internal successors, (195), 38 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:43,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:12:43,401 INFO L93 Difference]: Finished difference Result 7896 states and 21297 transitions. [2021-06-05 08:12:43,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-06-05 08:12:43,401 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.131578947368421) internal successors, (195), 38 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2021-06-05 08:12:43,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:12:43,410 INFO L225 Difference]: With dead ends: 7896 [2021-06-05 08:12:43,410 INFO L226 Difference]: Without dead ends: 7626 [2021-06-05 08:12:43,411 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2988 ImplicationChecksByTransitivity, 1399.5ms TimeCoverageRelationStatistics Valid=2931, Invalid=7575, Unknown=0, NotChecked=0, Total=10506 [2021-06-05 08:12:43,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7626 states. [2021-06-05 08:12:43,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7626 to 6453. [2021-06-05 08:12:43,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6453 states, 6452 states have (on average 2.833694978301302) internal successors, (18283), 6452 states have internal predecessors, (18283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:43,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6453 states to 6453 states and 18283 transitions. [2021-06-05 08:12:43,495 INFO L78 Accepts]: Start accepts. Automaton has 6453 states and 18283 transitions. Word has length 195 [2021-06-05 08:12:43,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:12:43,495 INFO L482 AbstractCegarLoop]: Abstraction has 6453 states and 18283 transitions. [2021-06-05 08:12:43,495 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 5.131578947368421) internal successors, (195), 38 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:43,495 INFO L276 IsEmpty]: Start isEmpty. Operand 6453 states and 18283 transitions. [2021-06-05 08:12:43,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-06-05 08:12:43,501 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:12:43,501 INFO L521 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:12:43,717 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 554 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable558 [2021-06-05 08:12:43,717 INFO L430 AbstractCegarLoop]: === Iteration 560 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:12:43,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:12:43,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1549361206, now seen corresponding path program 551 times [2021-06-05 08:12:43,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:12:43,717 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196118569] [2021-06-05 08:12:43,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:12:43,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:12:44,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:12:44,191 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:12:44,191 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196118569] [2021-06-05 08:12:44,191 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196118569] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:12:44,191 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279575406] [2021-06-05 08:12:44,191 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 555 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 555 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:12:44,297 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2021-06-05 08:12:44,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:12:44,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 39 conjunts are in the unsatisfiable core [2021-06-05 08:12:44,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:12:44,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:12:44,513 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279575406] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:12:44,513 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:12:44,513 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 39 [2021-06-05 08:12:44,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597652198] [2021-06-05 08:12:44,513 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 08:12:44,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:12:44,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 08:12:44,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=277, Invalid=1205, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 08:12:44,514 INFO L87 Difference]: Start difference. First operand 6453 states and 18283 transitions. Second operand has 39 states, 39 states have (on average 5.051282051282051) internal successors, (197), 39 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:46,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:12:46,415 INFO L93 Difference]: Finished difference Result 7846 states and 21197 transitions. [2021-06-05 08:12:46,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-06-05 08:12:46,415 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.051282051282051) internal successors, (197), 39 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2021-06-05 08:12:46,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:12:46,425 INFO L225 Difference]: With dead ends: 7846 [2021-06-05 08:12:46,425 INFO L226 Difference]: Without dead ends: 7576 [2021-06-05 08:12:46,426 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3048 ImplicationChecksByTransitivity, 1880.5ms TimeCoverageRelationStatistics Valid=2977, Invalid=7943, Unknown=0, NotChecked=0, Total=10920 [2021-06-05 08:12:46,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7576 states. [2021-06-05 08:12:46,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7576 to 6453. [2021-06-05 08:12:46,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6453 states, 6452 states have (on average 2.833694978301302) internal successors, (18283), 6452 states have internal predecessors, (18283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:46,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6453 states to 6453 states and 18283 transitions. [2021-06-05 08:12:46,513 INFO L78 Accepts]: Start accepts. Automaton has 6453 states and 18283 transitions. Word has length 195 [2021-06-05 08:12:46,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:12:46,513 INFO L482 AbstractCegarLoop]: Abstraction has 6453 states and 18283 transitions. [2021-06-05 08:12:46,513 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 5.051282051282051) internal successors, (197), 39 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:46,513 INFO L276 IsEmpty]: Start isEmpty. Operand 6453 states and 18283 transitions. [2021-06-05 08:12:46,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-06-05 08:12:46,518 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:12:46,518 INFO L521 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:12:46,729 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable559,555 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:12:46,729 INFO L430 AbstractCegarLoop]: === Iteration 561 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:12:46,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:12:46,729 INFO L82 PathProgramCache]: Analyzing trace with hash -935121736, now seen corresponding path program 552 times [2021-06-05 08:12:46,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:12:46,729 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565415243] [2021-06-05 08:12:46,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:12:46,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:12:47,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:12:47,105 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:12:47,105 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565415243] [2021-06-05 08:12:47,105 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565415243] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:12:47,105 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322428216] [2021-06-05 08:12:47,105 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 556 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 556 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:12:47,197 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2021-06-05 08:12:47,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:12:47,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 42 conjunts are in the unsatisfiable core [2021-06-05 08:12:47,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:12:47,395 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:12:47,396 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322428216] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:12:47,396 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:12:47,396 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2021-06-05 08:12:47,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418743828] [2021-06-05 08:12:47,396 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 08:12:47,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:12:47,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 08:12:47,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=301, Invalid=1105, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 08:12:47,396 INFO L87 Difference]: Start difference. First operand 6453 states and 18283 transitions. Second operand has 38 states, 38 states have (on average 5.131578947368421) internal successors, (195), 38 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:48,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:12:48,966 INFO L93 Difference]: Finished difference Result 7796 states and 21097 transitions. [2021-06-05 08:12:48,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-06-05 08:12:48,967 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.131578947368421) internal successors, (195), 38 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2021-06-05 08:12:48,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:12:48,975 INFO L225 Difference]: With dead ends: 7796 [2021-06-05 08:12:48,975 INFO L226 Difference]: Without dead ends: 7526 [2021-06-05 08:12:48,976 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3157 ImplicationChecksByTransitivity, 1532.9ms TimeCoverageRelationStatistics Valid=3145, Invalid=7775, Unknown=0, NotChecked=0, Total=10920 [2021-06-05 08:12:48,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7526 states. [2021-06-05 08:12:49,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7526 to 6453. [2021-06-05 08:12:49,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6453 states, 6452 states have (on average 2.833694978301302) internal successors, (18283), 6452 states have internal predecessors, (18283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:49,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6453 states to 6453 states and 18283 transitions. [2021-06-05 08:12:49,058 INFO L78 Accepts]: Start accepts. Automaton has 6453 states and 18283 transitions. Word has length 195 [2021-06-05 08:12:49,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:12:49,058 INFO L482 AbstractCegarLoop]: Abstraction has 6453 states and 18283 transitions. [2021-06-05 08:12:49,058 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 5.131578947368421) internal successors, (195), 38 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:49,058 INFO L276 IsEmpty]: Start isEmpty. Operand 6453 states and 18283 transitions. [2021-06-05 08:12:49,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-06-05 08:12:49,064 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:12:49,064 INFO L521 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:12:49,264 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable560,556 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:12:49,264 INFO L430 AbstractCegarLoop]: === Iteration 562 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:12:49,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:12:49,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1644603272, now seen corresponding path program 553 times [2021-06-05 08:12:49,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:12:49,265 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124475714] [2021-06-05 08:12:49,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:12:49,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:12:49,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:12:49,637 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:12:49,637 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124475714] [2021-06-05 08:12:49,637 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124475714] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:12:49,637 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450637392] [2021-06-05 08:12:49,637 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 557 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 557 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:12:49,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:12:49,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 39 conjunts are in the unsatisfiable core [2021-06-05 08:12:49,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:12:49,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:12:49,932 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450637392] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:12:49,932 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:12:49,932 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 39 [2021-06-05 08:12:49,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223838765] [2021-06-05 08:12:49,933 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 08:12:49,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:12:49,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 08:12:49,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=1179, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 08:12:49,933 INFO L87 Difference]: Start difference. First operand 6453 states and 18283 transitions. Second operand has 39 states, 39 states have (on average 5.051282051282051) internal successors, (197), 39 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:51,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:12:51,934 INFO L93 Difference]: Finished difference Result 7806 states and 21147 transitions. [2021-06-05 08:12:51,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-06-05 08:12:51,934 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.051282051282051) internal successors, (197), 39 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2021-06-05 08:12:51,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:12:51,943 INFO L225 Difference]: With dead ends: 7806 [2021-06-05 08:12:51,943 INFO L226 Difference]: Without dead ends: 7536 [2021-06-05 08:12:51,945 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3220 ImplicationChecksByTransitivity, 1908.1ms TimeCoverageRelationStatistics Valid=3193, Invalid=8149, Unknown=0, NotChecked=0, Total=11342 [2021-06-05 08:12:51,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7536 states. [2021-06-05 08:12:52,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7536 to 6453. [2021-06-05 08:12:52,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6453 states, 6452 states have (on average 2.8344699318040916) internal successors, (18288), 6452 states have internal predecessors, (18288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:52,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6453 states to 6453 states and 18288 transitions. [2021-06-05 08:12:52,036 INFO L78 Accepts]: Start accepts. Automaton has 6453 states and 18288 transitions. Word has length 195 [2021-06-05 08:12:52,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:12:52,101 INFO L482 AbstractCegarLoop]: Abstraction has 6453 states and 18288 transitions. [2021-06-05 08:12:52,101 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 5.051282051282051) internal successors, (197), 39 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:52,101 INFO L276 IsEmpty]: Start isEmpty. Operand 6453 states and 18288 transitions. [2021-06-05 08:12:52,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-06-05 08:12:52,105 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:12:52,105 INFO L521 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:12:52,306 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable561,557 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:12:52,306 INFO L430 AbstractCegarLoop]: === Iteration 563 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:12:52,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:12:52,306 INFO L82 PathProgramCache]: Analyzing trace with hash 611955670, now seen corresponding path program 554 times [2021-06-05 08:12:52,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:12:52,307 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357305649] [2021-06-05 08:12:52,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:12:52,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:12:52,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:12:52,681 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:12:52,681 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357305649] [2021-06-05 08:12:52,681 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357305649] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:12:52,681 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465740384] [2021-06-05 08:12:52,681 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 558 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 558 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:12:52,766 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:12:52,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:12:52,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 39 conjunts are in the unsatisfiable core [2021-06-05 08:12:52,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:12:52,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:12:52,970 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465740384] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:12:52,970 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:12:52,970 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2021-06-05 08:12:52,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315452763] [2021-06-05 08:12:52,970 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 08:12:52,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:12:52,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 08:12:52,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=1076, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 08:12:52,971 INFO L87 Difference]: Start difference. First operand 6453 states and 18288 transitions. Second operand has 38 states, 38 states have (on average 5.131578947368421) internal successors, (195), 38 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:54,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:12:54,596 INFO L93 Difference]: Finished difference Result 8548 states and 23271 transitions. [2021-06-05 08:12:54,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-06-05 08:12:54,597 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.131578947368421) internal successors, (195), 38 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2021-06-05 08:12:54,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:12:54,607 INFO L225 Difference]: With dead ends: 8548 [2021-06-05 08:12:54,607 INFO L226 Difference]: Without dead ends: 8278 [2021-06-05 08:12:54,608 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3329 ImplicationChecksByTransitivity, 1535.1ms TimeCoverageRelationStatistics Valid=3376, Invalid=7966, Unknown=0, NotChecked=0, Total=11342 [2021-06-05 08:12:54,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8278 states. [2021-06-05 08:12:54,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8278 to 6633. [2021-06-05 08:12:54,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6633 states, 6632 states have (on average 2.8418275030156814) internal successors, (18847), 6632 states have internal predecessors, (18847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:54,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6633 states to 6633 states and 18847 transitions. [2021-06-05 08:12:54,699 INFO L78 Accepts]: Start accepts. Automaton has 6633 states and 18847 transitions. Word has length 195 [2021-06-05 08:12:54,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:12:54,699 INFO L482 AbstractCegarLoop]: Abstraction has 6633 states and 18847 transitions. [2021-06-05 08:12:54,699 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 5.131578947368421) internal successors, (195), 38 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:54,699 INFO L276 IsEmpty]: Start isEmpty. Operand 6633 states and 18847 transitions. [2021-06-05 08:12:54,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-06-05 08:12:54,704 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:12:54,704 INFO L521 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:12:54,920 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 558 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable562 [2021-06-05 08:12:54,921 INFO L430 AbstractCegarLoop]: === Iteration 564 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:12:54,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:12:54,921 INFO L82 PathProgramCache]: Analyzing trace with hash 634298920, now seen corresponding path program 555 times [2021-06-05 08:12:54,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:12:54,921 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659962956] [2021-06-05 08:12:54,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:12:54,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:12:55,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:12:55,299 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:12:55,299 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659962956] [2021-06-05 08:12:55,299 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659962956] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:12:55,299 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95188811] [2021-06-05 08:12:55,299 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 559 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 559 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:12:55,396 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2021-06-05 08:12:55,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:12:55,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 40 conjunts are in the unsatisfiable core [2021-06-05 08:12:55,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:12:55,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:12:55,635 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95188811] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:12:55,635 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:12:55,636 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 40 [2021-06-05 08:12:55,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947385922] [2021-06-05 08:12:55,636 INFO L462 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-06-05 08:12:55,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:12:55,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-06-05 08:12:55,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=336, Invalid=1224, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 08:12:55,636 INFO L87 Difference]: Start difference. First operand 6633 states and 18847 transitions. Second operand has 40 states, 40 states have (on average 4.95) internal successors, (198), 40 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:57,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:12:57,538 INFO L93 Difference]: Finished difference Result 8416 states and 22936 transitions. [2021-06-05 08:12:57,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-06-05 08:12:57,539 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 4.95) internal successors, (198), 40 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2021-06-05 08:12:57,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:12:57,548 INFO L225 Difference]: With dead ends: 8416 [2021-06-05 08:12:57,548 INFO L226 Difference]: Without dead ends: 7841 [2021-06-05 08:12:57,549 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3516 ImplicationChecksByTransitivity, 1810.1ms TimeCoverageRelationStatistics Valid=3161, Invalid=9495, Unknown=0, NotChecked=0, Total=12656 [2021-06-05 08:12:57,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7841 states. [2021-06-05 08:12:57,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7841 to 4124. [2021-06-05 08:12:57,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4124 states, 4123 states have (on average 2.742178025709435) internal successors, (11306), 4123 states have internal predecessors, (11306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:57,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4124 states to 4124 states and 11306 transitions. [2021-06-05 08:12:57,608 INFO L78 Accepts]: Start accepts. Automaton has 4124 states and 11306 transitions. Word has length 195 [2021-06-05 08:12:57,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:12:57,608 INFO L482 AbstractCegarLoop]: Abstraction has 4124 states and 11306 transitions. [2021-06-05 08:12:57,609 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 4.95) internal successors, (198), 40 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:57,609 INFO L276 IsEmpty]: Start isEmpty. Operand 4124 states and 11306 transitions. [2021-06-05 08:12:57,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-06-05 08:12:57,612 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:12:57,612 INFO L521 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:12:57,816 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 559 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable563 [2021-06-05 08:12:57,817 INFO L430 AbstractCegarLoop]: === Iteration 565 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:12:57,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:12:57,817 INFO L82 PathProgramCache]: Analyzing trace with hash 2129171812, now seen corresponding path program 556 times [2021-06-05 08:12:57,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:12:57,817 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869339754] [2021-06-05 08:12:57,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:12:57,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:12:58,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:12:58,421 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:12:58,422 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869339754] [2021-06-05 08:12:58,422 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869339754] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:12:58,422 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468975976] [2021-06-05 08:12:58,422 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 560 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 560 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:12:58,502 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:12:58,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:12:58,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 41 conjunts are in the unsatisfiable core [2021-06-05 08:12:58,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:12:58,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:12:58,769 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468975976] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:12:58,769 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:12:58,770 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 42 [2021-06-05 08:12:58,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116220276] [2021-06-05 08:12:58,770 INFO L462 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-06-05 08:12:58,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:12:58,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-06-05 08:12:58,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=392, Invalid=1330, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 08:12:58,770 INFO L87 Difference]: Start difference. First operand 4124 states and 11306 transitions. Second operand has 42 states, 42 states have (on average 5.428571428571429) internal successors, (228), 42 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:59,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:12:59,833 INFO L93 Difference]: Finished difference Result 5614 states and 14606 transitions. [2021-06-05 08:12:59,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 08:12:59,833 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 5.428571428571429) internal successors, (228), 42 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 200 [2021-06-05 08:12:59,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:12:59,837 INFO L225 Difference]: With dead ends: 5614 [2021-06-05 08:12:59,837 INFO L226 Difference]: Without dead ends: 5280 [2021-06-05 08:12:59,838 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1378 ImplicationChecksByTransitivity, 1283.8ms TimeCoverageRelationStatistics Valid=1845, Invalid=4797, Unknown=0, NotChecked=0, Total=6642 [2021-06-05 08:12:59,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5280 states. [2021-06-05 08:12:59,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5280 to 4209. [2021-06-05 08:12:59,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4209 states, 4208 states have (on average 2.7271863117870723) internal successors, (11476), 4208 states have internal predecessors, (11476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:59,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4209 states to 4209 states and 11476 transitions. [2021-06-05 08:12:59,883 INFO L78 Accepts]: Start accepts. Automaton has 4209 states and 11476 transitions. Word has length 200 [2021-06-05 08:12:59,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:12:59,883 INFO L482 AbstractCegarLoop]: Abstraction has 4209 states and 11476 transitions. [2021-06-05 08:12:59,883 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 5.428571428571429) internal successors, (228), 42 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:12:59,883 INFO L276 IsEmpty]: Start isEmpty. Operand 4209 states and 11476 transitions. [2021-06-05 08:12:59,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-06-05 08:12:59,886 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:12:59,887 INFO L521 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:13:00,087 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 560 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable564 [2021-06-05 08:13:00,087 INFO L430 AbstractCegarLoop]: === Iteration 566 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:13:00,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:13:00,087 INFO L82 PathProgramCache]: Analyzing trace with hash 384370472, now seen corresponding path program 557 times [2021-06-05 08:13:00,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:13:00,087 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028987007] [2021-06-05 08:13:00,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:13:00,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:13:00,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:13:00,719 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:13:00,719 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028987007] [2021-06-05 08:13:00,719 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028987007] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:13:00,719 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063046278] [2021-06-05 08:13:00,719 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 561 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 561 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:13:00,822 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-06-05 08:13:00,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:13:00,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 40 conjunts are in the unsatisfiable core [2021-06-05 08:13:00,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:13:01,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:13:01,050 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063046278] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:13:01,050 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:13:01,050 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2021-06-05 08:13:01,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276972832] [2021-06-05 08:13:01,051 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 08:13:01,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:13:01,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 08:13:01,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=348, Invalid=1134, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 08:13:01,051 INFO L87 Difference]: Start difference. First operand 4209 states and 11476 transitions. Second operand has 39 states, 39 states have (on average 5.128205128205129) internal successors, (200), 39 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:13:01,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:13:01,864 INFO L93 Difference]: Finished difference Result 7236 states and 17787 transitions. [2021-06-05 08:13:01,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 08:13:01,865 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.128205128205129) internal successors, (200), 39 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 200 [2021-06-05 08:13:01,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:13:01,872 INFO L225 Difference]: With dead ends: 7236 [2021-06-05 08:13:01,872 INFO L226 Difference]: Without dead ends: 6966 [2021-06-05 08:13:01,873 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1020 ImplicationChecksByTransitivity, 1169.3ms TimeCoverageRelationStatistics Valid=1624, Invalid=4076, Unknown=0, NotChecked=0, Total=5700 [2021-06-05 08:13:01,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6966 states. [2021-06-05 08:13:01,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6966 to 4353. [2021-06-05 08:13:01,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4353 states, 4352 states have (on average 2.732766544117647) internal successors, (11893), 4352 states have internal predecessors, (11893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:13:01,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4353 states to 4353 states and 11893 transitions. [2021-06-05 08:13:01,932 INFO L78 Accepts]: Start accepts. Automaton has 4353 states and 11893 transitions. Word has length 200 [2021-06-05 08:13:01,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:13:01,932 INFO L482 AbstractCegarLoop]: Abstraction has 4353 states and 11893 transitions. [2021-06-05 08:13:01,932 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 5.128205128205129) internal successors, (200), 39 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:13:01,932 INFO L276 IsEmpty]: Start isEmpty. Operand 4353 states and 11893 transitions. [2021-06-05 08:13:01,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-06-05 08:13:01,936 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:13:01,936 INFO L521 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:13:02,149 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 561 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable565 [2021-06-05 08:13:02,149 INFO L430 AbstractCegarLoop]: === Iteration 567 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:13:02,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:13:02,149 INFO L82 PathProgramCache]: Analyzing trace with hash 486835704, now seen corresponding path program 558 times [2021-06-05 08:13:02,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:13:02,149 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992037555] [2021-06-05 08:13:02,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:13:02,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:13:02,715 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:13:02,715 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:13:02,715 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992037555] [2021-06-05 08:13:02,716 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992037555] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:13:02,716 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799762152] [2021-06-05 08:13:02,716 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 562 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 562 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:13:02,817 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2021-06-05 08:13:02,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:13:02,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 40 conjunts are in the unsatisfiable core [2021-06-05 08:13:02,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:13:03,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:13:03,091 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799762152] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:13:03,092 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:13:03,092 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2021-06-05 08:13:03,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341492283] [2021-06-05 08:13:03,092 INFO L462 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-06-05 08:13:03,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:13:03,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-06-05 08:13:03,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=1225, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 08:13:03,092 INFO L87 Difference]: Start difference. First operand 4353 states and 11893 transitions. Second operand has 40 states, 40 states have (on average 5.05) internal successors, (202), 40 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:13:04,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:13:04,089 INFO L93 Difference]: Finished difference Result 7196 states and 17782 transitions. [2021-06-05 08:13:04,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 08:13:04,089 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 5.05) internal successors, (202), 40 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 200 [2021-06-05 08:13:04,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:13:04,097 INFO L225 Difference]: With dead ends: 7196 [2021-06-05 08:13:04,097 INFO L226 Difference]: Without dead ends: 6926 [2021-06-05 08:13:04,098 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1144 ImplicationChecksByTransitivity, 1213.2ms TimeCoverageRelationStatistics Valid=1719, Invalid=4601, Unknown=0, NotChecked=0, Total=6320 [2021-06-05 08:13:04,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6926 states. [2021-06-05 08:13:04,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6926 to 4428. [2021-06-05 08:13:04,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4428 states, 4427 states have (on average 2.7372938784730065) internal successors, (12118), 4427 states have internal predecessors, (12118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:13:04,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4428 states to 4428 states and 12118 transitions. [2021-06-05 08:13:04,161 INFO L78 Accepts]: Start accepts. Automaton has 4428 states and 12118 transitions. Word has length 200 [2021-06-05 08:13:04,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:13:04,161 INFO L482 AbstractCegarLoop]: Abstraction has 4428 states and 12118 transitions. [2021-06-05 08:13:04,161 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 5.05) internal successors, (202), 40 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:13:04,161 INFO L276 IsEmpty]: Start isEmpty. Operand 4428 states and 12118 transitions. [2021-06-05 08:13:04,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-06-05 08:13:04,166 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:13:04,166 INFO L521 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:13:04,382 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 562 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable566 [2021-06-05 08:13:04,382 INFO L430 AbstractCegarLoop]: === Iteration 568 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:13:04,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:13:04,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1477590502, now seen corresponding path program 559 times [2021-06-05 08:13:04,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:13:04,382 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346514057] [2021-06-05 08:13:04,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:13:04,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:13:05,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:13:05,077 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:13:05,077 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346514057] [2021-06-05 08:13:05,077 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346514057] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:13:05,078 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768517047] [2021-06-05 08:13:05,078 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 563 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 563 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:13:05,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:13:05,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 40 conjunts are in the unsatisfiable core [2021-06-05 08:13:05,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:13:05,399 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:13:05,400 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768517047] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:13:05,400 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:13:05,400 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2021-06-05 08:13:05,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58462437] [2021-06-05 08:13:05,400 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 08:13:05,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:13:05,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 08:13:05,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=1164, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 08:13:05,401 INFO L87 Difference]: Start difference. First operand 4428 states and 12118 transitions. Second operand has 39 states, 39 states have (on average 5.128205128205129) internal successors, (200), 39 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:13:06,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:13:06,497 INFO L93 Difference]: Finished difference Result 7246 states and 17957 transitions. [2021-06-05 08:13:06,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 08:13:06,497 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.128205128205129) internal successors, (200), 39 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 200 [2021-06-05 08:13:06,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:13:06,505 INFO L225 Difference]: With dead ends: 7246 [2021-06-05 08:13:06,505 INFO L226 Difference]: Without dead ends: 6976 [2021-06-05 08:13:06,506 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1126 ImplicationChecksByTransitivity, 1374.2ms TimeCoverageRelationStatistics Valid=1615, Invalid=4391, Unknown=0, NotChecked=0, Total=6006 [2021-06-05 08:13:06,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6976 states. [2021-06-05 08:13:06,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6976 to 4503. [2021-06-05 08:13:06,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4503 states, 4502 states have (on average 2.741670368725011) internal successors, (12343), 4502 states have internal predecessors, (12343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:13:06,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4503 states to 4503 states and 12343 transitions. [2021-06-05 08:13:06,570 INFO L78 Accepts]: Start accepts. Automaton has 4503 states and 12343 transitions. Word has length 200 [2021-06-05 08:13:06,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:13:06,571 INFO L482 AbstractCegarLoop]: Abstraction has 4503 states and 12343 transitions. [2021-06-05 08:13:06,571 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 5.128205128205129) internal successors, (200), 39 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:13:06,571 INFO L276 IsEmpty]: Start isEmpty. Operand 4503 states and 12343 transitions. [2021-06-05 08:13:06,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-06-05 08:13:06,575 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:13:06,575 INFO L521 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:13:06,789 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable567,563 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:13:06,789 INFO L430 AbstractCegarLoop]: === Iteration 569 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:13:06,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:13:06,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1306984630, now seen corresponding path program 560 times [2021-06-05 08:13:06,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:13:06,789 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592011195] [2021-06-05 08:13:06,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:13:06,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:13:07,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:13:07,392 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:13:07,392 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592011195] [2021-06-05 08:13:07,392 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592011195] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:13:07,393 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023672731] [2021-06-05 08:13:07,393 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 564 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 564 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:13:07,481 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:13:07,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:13:07,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 40 conjunts are in the unsatisfiable core [2021-06-05 08:13:07,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:13:07,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:13:07,726 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023672731] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:13:07,726 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:13:07,726 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2021-06-05 08:13:07,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686344589] [2021-06-05 08:13:07,726 INFO L462 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-06-05 08:13:07,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:13:07,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-06-05 08:13:07,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=1254, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 08:13:07,727 INFO L87 Difference]: Start difference. First operand 4503 states and 12343 transitions. Second operand has 40 states, 40 states have (on average 5.05) internal successors, (202), 40 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:13:08,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:13:08,799 INFO L93 Difference]: Finished difference Result 7271 states and 18082 transitions. [2021-06-05 08:13:08,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-05 08:13:08,800 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 5.05) internal successors, (202), 40 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 200 [2021-06-05 08:13:08,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:13:08,809 INFO L225 Difference]: With dead ends: 7271 [2021-06-05 08:13:08,809 INFO L226 Difference]: Without dead ends: 7001 [2021-06-05 08:13:08,810 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1256 ImplicationChecksByTransitivity, 1275.1ms TimeCoverageRelationStatistics Valid=1718, Invalid=4924, Unknown=0, NotChecked=0, Total=6642 [2021-06-05 08:13:08,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7001 states. [2021-06-05 08:13:08,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7001 to 4578. [2021-06-05 08:13:08,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4578 states, 4577 states have (on average 2.7459034301944505) internal successors, (12568), 4577 states have internal predecessors, (12568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:13:08,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4578 states to 4578 states and 12568 transitions. [2021-06-05 08:13:08,877 INFO L78 Accepts]: Start accepts. Automaton has 4578 states and 12568 transitions. Word has length 200 [2021-06-05 08:13:08,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:13:08,877 INFO L482 AbstractCegarLoop]: Abstraction has 4578 states and 12568 transitions. [2021-06-05 08:13:08,877 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 5.05) internal successors, (202), 40 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:13:08,877 INFO L276 IsEmpty]: Start isEmpty. Operand 4578 states and 12568 transitions. [2021-06-05 08:13:08,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-06-05 08:13:08,881 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:13:08,882 INFO L521 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:13:09,097 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 564 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable568 [2021-06-05 08:13:09,097 INFO L430 AbstractCegarLoop]: === Iteration 570 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:13:09,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:13:09,098 INFO L82 PathProgramCache]: Analyzing trace with hash -2146489820, now seen corresponding path program 561 times [2021-06-05 08:13:09,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:13:09,098 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051577125] [2021-06-05 08:13:09,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:13:09,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:13:09,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:13:09,584 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:13:09,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051577125] [2021-06-05 08:13:09,584 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051577125] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:13:09,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527011542] [2021-06-05 08:13:09,584 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 565 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 565 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:13:09,679 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2021-06-05 08:13:09,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:13:09,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 40 conjunts are in the unsatisfiable core [2021-06-05 08:13:09,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:13:09,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:13:09,936 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527011542] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:13:09,936 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:13:09,937 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2021-06-05 08:13:09,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481483273] [2021-06-05 08:13:09,937 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 08:13:09,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:13:09,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 08:13:09,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=1190, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 08:13:09,937 INFO L87 Difference]: Start difference. First operand 4578 states and 12568 transitions. Second operand has 39 states, 39 states have (on average 5.128205128205129) internal successors, (200), 39 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:13:11,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:13:11,127 INFO L93 Difference]: Finished difference Result 7296 states and 18207 transitions. [2021-06-05 08:13:11,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 08:13:11,127 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.128205128205129) internal successors, (200), 39 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 200 [2021-06-05 08:13:11,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:13:11,133 INFO L225 Difference]: With dead ends: 7296 [2021-06-05 08:13:11,133 INFO L226 Difference]: Without dead ends: 7026 [2021-06-05 08:13:11,134 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1236 ImplicationChecksByTransitivity, 1189.3ms TimeCoverageRelationStatistics Valid=1622, Invalid=4698, Unknown=0, NotChecked=0, Total=6320 [2021-06-05 08:13:11,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7026 states. [2021-06-05 08:13:11,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7026 to 4653. [2021-06-05 08:13:11,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4653 states, 4652 states have (on average 2.75) internal successors, (12793), 4652 states have internal predecessors, (12793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:13:11,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4653 states to 4653 states and 12793 transitions. [2021-06-05 08:13:11,194 INFO L78 Accepts]: Start accepts. Automaton has 4653 states and 12793 transitions. Word has length 200 [2021-06-05 08:13:11,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:13:11,195 INFO L482 AbstractCegarLoop]: Abstraction has 4653 states and 12793 transitions. [2021-06-05 08:13:11,195 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 5.128205128205129) internal successors, (200), 39 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:13:11,195 INFO L276 IsEmpty]: Start isEmpty. Operand 4653 states and 12793 transitions. [2021-06-05 08:13:11,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-06-05 08:13:11,199 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:13:11,199 INFO L521 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:13:11,414 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable569,565 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:13:11,414 INFO L430 AbstractCegarLoop]: === Iteration 571 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:13:11,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:13:11,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1000485108, now seen corresponding path program 562 times [2021-06-05 08:13:11,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:13:11,414 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263595849] [2021-06-05 08:13:11,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:13:11,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:13:11,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:13:11,924 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:13:11,924 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263595849] [2021-06-05 08:13:11,924 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263595849] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:13:11,924 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340314971] [2021-06-05 08:13:11,924 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 566 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 566 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:13:12,007 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 08:13:12,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:13:12,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 40 conjunts are in the unsatisfiable core [2021-06-05 08:13:12,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:13:12,250 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:13:12,250 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340314971] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:13:12,250 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:13:12,250 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2021-06-05 08:13:12,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525586263] [2021-06-05 08:13:12,251 INFO L462 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-06-05 08:13:12,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:13:12,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-06-05 08:13:12,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=1279, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 08:13:12,251 INFO L87 Difference]: Start difference. First operand 4653 states and 12793 transitions. Second operand has 40 states, 40 states have (on average 5.05) internal successors, (202), 40 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:13:13,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:13:13,384 INFO L93 Difference]: Finished difference Result 7321 states and 18332 transitions. [2021-06-05 08:13:13,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 08:13:13,385 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 5.05) internal successors, (202), 40 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 200 [2021-06-05 08:13:13,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:13:13,393 INFO L225 Difference]: With dead ends: 7321 [2021-06-05 08:13:13,393 INFO L226 Difference]: Without dead ends: 7051 [2021-06-05 08:13:13,394 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1373 ImplicationChecksByTransitivity, 1251.4ms TimeCoverageRelationStatistics Valid=1733, Invalid=5239, Unknown=0, NotChecked=0, Total=6972 [2021-06-05 08:13:13,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7051 states. [2021-06-05 08:13:13,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7051 to 4728. [2021-06-05 08:13:13,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4728 states, 4727 states have (on average 2.753966574994711) internal successors, (13018), 4727 states have internal predecessors, (13018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:13:13,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4728 states to 4728 states and 13018 transitions. [2021-06-05 08:13:13,461 INFO L78 Accepts]: Start accepts. Automaton has 4728 states and 13018 transitions. Word has length 200 [2021-06-05 08:13:13,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:13:13,461 INFO L482 AbstractCegarLoop]: Abstraction has 4728 states and 13018 transitions. [2021-06-05 08:13:13,462 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 5.05) internal successors, (202), 40 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:13:13,462 INFO L276 IsEmpty]: Start isEmpty. Operand 4728 states and 13018 transitions. [2021-06-05 08:13:13,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-06-05 08:13:13,466 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:13:13,466 INFO L521 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:13:13,682 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable570,566 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:13:13,682 INFO L430 AbstractCegarLoop]: === Iteration 572 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:13:13,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:13:13,683 INFO L82 PathProgramCache]: Analyzing trace with hash -864244766, now seen corresponding path program 563 times [2021-06-05 08:13:13,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:13:13,683 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396892188] [2021-06-05 08:13:13,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:13:13,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:13:14,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:13:14,169 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:13:14,169 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396892188] [2021-06-05 08:13:14,169 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396892188] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:13:14,169 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837739892] [2021-06-05 08:13:14,169 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 567 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 567 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:13:14,257 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-06-05 08:13:14,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:13:14,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 40 conjunts are in the unsatisfiable core [2021-06-05 08:13:14,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:13:14,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:13:14,528 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837739892] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:13:14,528 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:13:14,528 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2021-06-05 08:13:14,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412672767] [2021-06-05 08:13:14,528 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 08:13:14,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:13:14,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 08:13:14,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=1212, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 08:13:14,529 INFO L87 Difference]: Start difference. First operand 4728 states and 13018 transitions. Second operand has 39 states, 39 states have (on average 5.128205128205129) internal successors, (200), 39 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:13:15,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:13:15,936 INFO L93 Difference]: Finished difference Result 7346 states and 18457 transitions. [2021-06-05 08:13:15,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 08:13:15,936 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.128205128205129) internal successors, (200), 39 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 200 [2021-06-05 08:13:15,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:13:15,945 INFO L225 Difference]: With dead ends: 7346 [2021-06-05 08:13:15,945 INFO L226 Difference]: Without dead ends: 7076 [2021-06-05 08:13:15,945 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1350 ImplicationChecksByTransitivity, 1546.3ms TimeCoverageRelationStatistics Valid=1645, Invalid=4997, Unknown=0, NotChecked=0, Total=6642 [2021-06-05 08:13:15,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7076 states. [2021-06-05 08:13:16,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7076 to 4803. [2021-06-05 08:13:16,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4803 states, 4802 states have (on average 2.7578092461474384) internal successors, (13243), 4802 states have internal predecessors, (13243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:13:16,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4803 states to 4803 states and 13243 transitions. [2021-06-05 08:13:16,013 INFO L78 Accepts]: Start accepts. Automaton has 4803 states and 13243 transitions. Word has length 200 [2021-06-05 08:13:16,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:13:16,013 INFO L482 AbstractCegarLoop]: Abstraction has 4803 states and 13243 transitions. [2021-06-05 08:13:16,013 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 5.128205128205129) internal successors, (200), 39 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:13:16,014 INFO L276 IsEmpty]: Start isEmpty. Operand 4803 states and 13243 transitions. [2021-06-05 08:13:16,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-06-05 08:13:16,018 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:13:16,018 INFO L521 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:13:16,232 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable571,567 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:13:16,233 INFO L430 AbstractCegarLoop]: === Iteration 573 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:13:16,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:13:16,233 INFO L82 PathProgramCache]: Analyzing trace with hash -166529358, now seen corresponding path program 564 times [2021-06-05 08:13:16,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:13:16,233 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242860401] [2021-06-05 08:13:16,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:13:16,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:13:16,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:13:16,734 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:13:16,734 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242860401] [2021-06-05 08:13:16,734 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242860401] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:13:16,734 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968170244] [2021-06-05 08:13:16,734 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 568 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 568 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:13:16,838 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2021-06-05 08:13:16,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:13:16,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 40 conjunts are in the unsatisfiable core [2021-06-05 08:13:16,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:13:17,084 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:13:17,085 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968170244] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:13:17,085 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:13:17,085 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2021-06-05 08:13:17,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265486740] [2021-06-05 08:13:17,085 INFO L462 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-06-05 08:13:17,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:13:17,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-06-05 08:13:17,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=1300, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 08:13:17,085 INFO L87 Difference]: Start difference. First operand 4803 states and 13243 transitions. Second operand has 40 states, 40 states have (on average 5.05) internal successors, (202), 40 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:13:18,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:13:18,261 INFO L93 Difference]: Finished difference Result 7371 states and 18582 transitions. [2021-06-05 08:13:18,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-06-05 08:13:18,261 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 5.05) internal successors, (202), 40 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 200 [2021-06-05 08:13:18,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:13:18,270 INFO L225 Difference]: With dead ends: 7371 [2021-06-05 08:13:18,270 INFO L226 Difference]: Without dead ends: 7101 [2021-06-05 08:13:18,271 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1494 ImplicationChecksByTransitivity, 1344.0ms TimeCoverageRelationStatistics Valid=1764, Invalid=5546, Unknown=0, NotChecked=0, Total=7310 [2021-06-05 08:13:18,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7101 states. [2021-06-05 08:13:18,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7101 to 4878. [2021-06-05 08:13:18,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4878 states, 4877 states have (on average 2.7615337297518967) internal successors, (13468), 4877 states have internal predecessors, (13468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:13:18,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4878 states to 4878 states and 13468 transitions. [2021-06-05 08:13:18,340 INFO L78 Accepts]: Start accepts. Automaton has 4878 states and 13468 transitions. Word has length 200 [2021-06-05 08:13:18,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:13:18,340 INFO L482 AbstractCegarLoop]: Abstraction has 4878 states and 13468 transitions. [2021-06-05 08:13:18,340 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 5.05) internal successors, (202), 40 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:13:18,340 INFO L276 IsEmpty]: Start isEmpty. Operand 4878 states and 13468 transitions. [2021-06-05 08:13:18,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-06-05 08:13:18,345 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:13:18,345 INFO L521 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:13:18,557 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable572,568 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:13:18,557 INFO L430 AbstractCegarLoop]: === Iteration 574 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:13:18,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:13:18,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1886412000, now seen corresponding path program 565 times [2021-06-05 08:13:18,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:13:18,557 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126293146] [2021-06-05 08:13:18,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:13:18,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:13:19,074 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:13:19,074 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:13:19,074 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126293146] [2021-06-05 08:13:19,074 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126293146] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:13:19,074 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839084909] [2021-06-05 08:13:19,074 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 569 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 569 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:13:19,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:13:19,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 40 conjunts are in the unsatisfiable core [2021-06-05 08:13:19,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:13:19,373 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:13:19,373 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839084909] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:13:19,373 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:13:19,373 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2021-06-05 08:13:19,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730517789] [2021-06-05 08:13:19,374 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-05 08:13:19,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:13:19,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-05 08:13:19,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=1230, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 08:13:19,374 INFO L87 Difference]: Start difference. First operand 4878 states and 13468 transitions. Second operand has 39 states, 39 states have (on average 5.128205128205129) internal successors, (200), 39 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:13:20,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:13:20,594 INFO L93 Difference]: Finished difference Result 7396 states and 18707 transitions. [2021-06-05 08:13:20,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 08:13:20,594 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.128205128205129) internal successors, (200), 39 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 200 [2021-06-05 08:13:20,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:13:20,602 INFO L225 Difference]: With dead ends: 7396 [2021-06-05 08:13:20,602 INFO L226 Difference]: Without dead ends: 7126 [2021-06-05 08:13:20,603 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1468 ImplicationChecksByTransitivity, 1320.0ms TimeCoverageRelationStatistics Valid=1684, Invalid=5288, Unknown=0, NotChecked=0, Total=6972 [2021-06-05 08:13:20,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7126 states. [2021-06-05 08:13:20,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7126 to 4953. [2021-06-05 08:13:20,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4953 states, 4952 states have (on average 2.765145395799677) internal successors, (13693), 4952 states have internal predecessors, (13693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:13:20,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4953 states to 4953 states and 13693 transitions. [2021-06-05 08:13:20,674 INFO L78 Accepts]: Start accepts. Automaton has 4953 states and 13693 transitions. Word has length 200 [2021-06-05 08:13:20,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:13:20,674 INFO L482 AbstractCegarLoop]: Abstraction has 4953 states and 13693 transitions. [2021-06-05 08:13:20,674 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 5.128205128205129) internal successors, (200), 39 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:13:20,674 INFO L276 IsEmpty]: Start isEmpty. Operand 4953 states and 13693 transitions. [2021-06-05 08:13:20,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-06-05 08:13:20,679 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:13:20,679 INFO L521 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:13:20,895 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 569 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable573 [2021-06-05 08:13:20,895 INFO L430 AbstractCegarLoop]: === Iteration 575 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:13:20,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:13:20,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1907241456, now seen corresponding path program 566 times [2021-06-05 08:13:20,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:13:20,896 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500919658] [2021-06-05 08:13:20,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:13:20,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:13:21,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:13:21,378 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:13:21,378 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500919658] [2021-06-05 08:13:21,378 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500919658] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:13:21,378 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339578961] [2021-06-05 08:13:21,378 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 570 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 570 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 08:13:21,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 08:13:21,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:13:21,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 40 conjunts are in the unsatisfiable core [2021-06-05 08:13:21,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:13:21,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:13:21,707 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339578961] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:13:21,707 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 08:13:21,708 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2021-06-05 08:13:21,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569691858] [2021-06-05 08:13:21,708 INFO L462 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-06-05 08:13:21,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:13:21,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-06-05 08:13:21,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=1317, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 08:13:21,708 INFO L87 Difference]: Start difference. First operand 4953 states and 13693 transitions. Second operand has 40 states, 40 states have (on average 5.05) internal successors, (202), 40 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:13:22,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:13:22,985 INFO L93 Difference]: Finished difference Result 7421 states and 18832 transitions. [2021-06-05 08:13:22,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-05 08:13:22,985 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 5.05) internal successors, (202), 40 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 200 [2021-06-05 08:13:22,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:13:22,993 INFO L225 Difference]: With dead ends: 7421 [2021-06-05 08:13:22,993 INFO L226 Difference]: Without dead ends: 7151 [2021-06-05 08:13:22,994 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1619 ImplicationChecksByTransitivity, 1400.7ms TimeCoverageRelationStatistics Valid=1811, Invalid=5845, Unknown=0, NotChecked=0, Total=7656 [2021-06-05 08:13:23,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7151 states. [2021-06-05 08:13:23,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7151 to 5028. [2021-06-05 08:13:23,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5028 states, 5027 states have (on average 2.7686492938134077) internal successors, (13918), 5027 states have internal predecessors, (13918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:13:23,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5028 states to 5028 states and 13918 transitions. [2021-06-05 08:13:23,065 INFO L78 Accepts]: Start accepts. Automaton has 5028 states and 13918 transitions. Word has length 200 [2021-06-05 08:13:23,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:13:23,065 INFO L482 AbstractCegarLoop]: Abstraction has 5028 states and 13918 transitions. [2021-06-05 08:13:23,065 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 5.05) internal successors, (202), 40 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:13:23,065 INFO L276 IsEmpty]: Start isEmpty. Operand 5028 states and 13918 transitions. [2021-06-05 08:13:23,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-06-05 08:13:23,070 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:13:23,070 INFO L521 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:13:23,287 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 570 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable574 [2021-06-05 08:13:23,287 INFO L430 AbstractCegarLoop]: === Iteration 576 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:13:23,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:13:23,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1911230498, now seen corresponding path program 567 times [2021-06-05 08:13:23,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:13:23,287 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348256380] [2021-06-05 08:13:23,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:13:23,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:13:23,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:13:23,783 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:13:23,783 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348256380] [2021-06-05 08:13:23,783 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348256380] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 08:13:23,783 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293005165] [2021-06-05 08:13:23,783 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 571 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 571 with z3 -smt2 -in SMTLIB2_COMPLIANT=true Received shutdown request... [2021-06-05 08:13:23,891 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2021-06-05 08:13:23,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 08:13:23,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 63 conjunts are in the unsatisfiable core [2021-06-05 08:13:23,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 08:13:24,144 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 571 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable575 [2021-06-05 08:13:24,145 WARN L547 AbstractCegarLoop]: Verification canceled [2021-06-05 08:13:24,146 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 08:13:24,147 WARN L196 ceAbstractionStarter]: Timeout [2021-06-05 08:13:24,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 08:13:24 BasicIcfg [2021-06-05 08:13:24,148 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 08:13:24,148 INFO L168 Benchmark]: Toolchain (without parser) took 941409.37 ms. Allocated memory was 364.9 MB in the beginning and 1.7 GB in the end (delta: 1.4 GB). Free memory was 327.5 MB in the beginning and 1.3 GB in the end (delta: -932.1 MB). Peak memory consumption was 423.9 MB. Max. memory is 16.0 GB. [2021-06-05 08:13:24,148 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 364.9 MB. Free memory is still 345.5 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 08:13:24,148 INFO L168 Benchmark]: CACSL2BoogieTranslator took 424.36 ms. Allocated memory is still 364.9 MB. Free memory was 327.2 MB in the beginning and 327.5 MB in the end (delta: -274.8 kB). Peak memory consumption was 7.4 MB. Max. memory is 16.0 GB. [2021-06-05 08:13:24,148 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.03 ms. Allocated memory is still 364.9 MB. Free memory was 327.5 MB in the beginning and 325.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 08:13:24,148 INFO L168 Benchmark]: Boogie Preprocessor took 28.03 ms. Allocated memory is still 364.9 MB. Free memory was 325.5 MB in the beginning and 324.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 08:13:24,148 INFO L168 Benchmark]: RCFGBuilder took 325.60 ms. Allocated memory is still 364.9 MB. Free memory was 324.4 MB in the beginning and 301.6 MB in the end (delta: 22.9 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-06-05 08:13:24,148 INFO L168 Benchmark]: TraceAbstraction took 940584.90 ms. Allocated memory was 364.9 MB in the beginning and 1.7 GB in the end (delta: 1.4 GB). Free memory was 300.3 MB in the beginning and 1.3 GB in the end (delta: -959.2 MB). Peak memory consumption was 395.5 MB. Max. memory is 16.0 GB. [2021-06-05 08:13:24,149 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 364.9 MB. Free memory is still 345.5 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 424.36 ms. Allocated memory is still 364.9 MB. Free memory was 327.2 MB in the beginning and 327.5 MB in the end (delta: -274.8 kB). Peak memory consumption was 7.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 41.03 ms. Allocated memory is still 364.9 MB. Free memory was 327.5 MB in the beginning and 325.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 28.03 ms. Allocated memory is still 364.9 MB. Free memory was 325.5 MB in the beginning and 324.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 325.60 ms. Allocated memory is still 364.9 MB. Free memory was 324.4 MB in the beginning and 301.6 MB in the end (delta: 22.9 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 940584.90 ms. Allocated memory was 364.9 MB in the beginning and 1.7 GB in the end (delta: 1.4 GB). Free memory was 300.3 MB in the beginning and 1.3 GB in the end (delta: -959.2 MB). Peak memory consumption was 395.5 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 713]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 201 with TraceHistMax 17,while TraceCheckSpWp was constructing forward predicates,while QuantifierPusher was running 1 iterations of DualJunctionQuantifierElimination. - TimeoutResultAtElement [Line: 714]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 201 with TraceHistMax 17,while TraceCheckSpWp was constructing forward predicates,while QuantifierPusher was running 1 iterations of DualJunctionQuantifierElimination. - TimeoutResultAtElement [Line: 722]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was analyzing trace of length 201 with TraceHistMax 17,while TraceCheckSpWp was constructing forward predicates,while QuantifierPusher was running 1 iterations of DualJunctionQuantifierElimination. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 84 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 940493.7ms, OverallIterations: 576, TraceHistogramMax: 17, EmptinessCheckTime: 2075.2ms, AutomataDifference: 480703.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 74.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 55569 SDtfs, 737492 SDslu, 637960 SDs, 0 SdLazy, 118148 SolverSat, 127712 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 77387.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 118233 GetRequests, 81477 SyntacticMatches, 0 SemanticMatches, 36756 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 644358 ImplicationChecksByTransitivity, 490539.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=6633occurred in iteration=563, InterpolantAutomatonStates: 25517, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 31315.1ms AutomataMinimizationTime, 575 MinimizatonAttempts, 724082 StatesRemovedByMinimization, 575 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 7332.5ms SsaConstructionTime, 21101.7ms SatisfiabilityAnalysisTime, 257080.7ms InterpolantComputationTime, 163198 NumberOfCodeBlocks, 163198 NumberOfCodeBlocksAsserted, 4476 NumberOfCheckSat, 162054 ConstructedInterpolants, 0 QuantifiedInterpolants, 716600 SizeOfPredicates, 13468 NumberOfNonLiveVariables, 157688 ConjunctsInSsa, 17172 ConjunctsInUnsatCore, 1144 InterpolantComputations, 6 PerfectInterpolantSequences, 1/682980 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown