/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/fib_bench-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-29289db [2021-06-05 07:28:38,196 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 07:28:38,198 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 07:28:38,231 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-05 07:28:38,251 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-05 07:28:38,253 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-05 07:28:38,254 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-05 07:28:38,255 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-05 07:28:38,258 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-05 07:28:38,259 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-05 07:28:38,261 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-05 07:28:38,268 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-05 07:28:38,269 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-05 07:28:38,270 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-05 07:28:38,271 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-05 07:28:38,273 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-05 07:28:38,279 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-05 07:28:38,286 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 07:28:38,287 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 07:28:38,287 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 07:28:38,291 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 07:28:38,328 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 07:28:38,328 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 07:28:38,328 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 07:28:38,328 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 07:28:38,329 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 07:28:38,329 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 07:28:38,329 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 07:28:38,330 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 07:28:38,330 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 07:28:38,330 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 07:28:38,330 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 07:28:38,330 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 07:28:38,330 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 07:28:38,330 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 07:28:38,330 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 07:28:38,330 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 07:28:38,331 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 07:28:38,331 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 07:28:38,331 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 07:28:38,331 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 07:28:38,331 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 07:28:38,331 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 07:28:38,331 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 07:28:38,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 07:28:38,332 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 07:28:38,332 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 07:28:38,332 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 07:28:38,332 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 07:28:38,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 07:28:38,332 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 07:28:38,333 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 07:28:38,333 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2021-06-05 07:28:38,334 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 07:28:38,614 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 07:28:38,639 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 07:28:38,642 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 07:28:38,644 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-05 07:28:38,644 INFO L275 PluginConnector]: CDTParser initialized [2021-06-05 07:28:38,645 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_bench-2.i [2021-06-05 07:28:38,702 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2e22f254/296958a20e524e7a93cd7a7459b70a76/FLAG171fedfbb [2021-06-05 07:28:39,154 INFO L306 CDTParser]: Found 1 translation units. [2021-06-05 07:28:39,155 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_bench-2.i [2021-06-05 07:28:39,181 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2e22f254/296958a20e524e7a93cd7a7459b70a76/FLAG171fedfbb [2021-06-05 07:28:39,505 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2e22f254/296958a20e524e7a93cd7a7459b70a76 [2021-06-05 07:28:39,507 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 07:28:39,509 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-05 07:28:39,512 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-05 07:28:39,512 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-05 07:28:39,515 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-05 07:28:39,515 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 07:28:39" (1/1) ... [2021-06-05 07:28:39,517 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21222109 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:28:39, skipping insertion in model container [2021-06-05 07:28:39,517 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 07:28:39" (1/1) ... [2021-06-05 07:28:39,522 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-05 07:28:39,582 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-05 07:28:39,781 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/fib_bench-2.i[30922,30935] [2021-06-05 07:28:39,792 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 07:28:39,797 INFO L203 MainTranslator]: Completed pre-run [2021-06-05 07:28:39,867 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/fib_bench-2.i[30922,30935] [2021-06-05 07:28:39,867 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 07:28:39,924 INFO L208 MainTranslator]: Completed translation [2021-06-05 07:28:39,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:28:39 WrapperNode [2021-06-05 07:28:39,926 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-05 07:28:39,927 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 07:28:39,927 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 07:28:39,927 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 07:28:39,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:28:39" (1/1) ... [2021-06-05 07:28:39,951 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:28:39" (1/1) ... [2021-06-05 07:28:39,969 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 07:28:39,970 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 07:28:39,970 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 07:28:39,970 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 07:28:39,976 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:28:39" (1/1) ... [2021-06-05 07:28:39,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:28:39" (1/1) ... [2021-06-05 07:28:39,991 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:28:39" (1/1) ... [2021-06-05 07:28:39,992 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:28:39" (1/1) ... [2021-06-05 07:28:39,995 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:28:39" (1/1) ... [2021-06-05 07:28:39,998 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:28:39" (1/1) ... [2021-06-05 07:28:40,000 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:28:39" (1/1) ... [2021-06-05 07:28:40,002 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 07:28:40,002 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 07:28:40,003 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 07:28:40,003 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 07:28:40,003 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:28:39" (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 07:28:40,072 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2021-06-05 07:28:40,072 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2021-06-05 07:28:40,073 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2021-06-05 07:28:40,073 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2021-06-05 07:28:40,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-05 07:28:40,073 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-05 07:28:40,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-05 07:28:40,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-05 07:28:40,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-05 07:28:40,073 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-05 07:28:40,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 07:28:40,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 07:28:40,076 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 07:28:40,529 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 07:28:40,529 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-06-05 07:28:40,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 07:28:40 BoogieIcfgContainer [2021-06-05 07:28:40,531 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 07:28:40,532 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 07:28:40,532 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 07:28:40,535 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 07:28:40,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.06 07:28:39" (1/3) ... [2021-06-05 07:28:40,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@432ef2b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 07:28:40, skipping insertion in model container [2021-06-05 07:28:40,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:28:39" (2/3) ... [2021-06-05 07:28:40,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@432ef2b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 07:28:40, skipping insertion in model container [2021-06-05 07:28:40,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 07:28:40" (3/3) ... [2021-06-05 07:28:40,539 INFO L111 eAbstractionObserver]: Analyzing ICFG fib_bench-2.i [2021-06-05 07:28:40,544 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 07:28:40,544 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 07:28:40,544 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 07:28:40,545 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 07:28:40,578 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,578 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,578 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,579 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,579 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,579 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,579 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,579 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,580 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,580 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,580 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,581 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,581 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,581 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,581 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,582 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,582 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,582 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,582 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,582 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,583 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,583 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,583 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,584 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,584 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,584 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,584 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,584 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,584 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,585 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,585 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,585 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,586 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,586 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,586 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,586 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,587 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,587 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,587 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,587 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,587 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,588 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,588 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,588 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,588 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,588 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,589 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,589 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,589 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,589 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,591 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,591 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,591 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,591 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,591 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,592 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,592 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,592 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,592 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,592 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,594 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,595 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,595 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,595 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,595 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,595 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,601 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,601 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,601 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,601 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,601 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,602 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 07:28:40,604 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-05 07:28:40,623 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-06-05 07:28:40,653 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 07:28:40,654 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 07:28:40,654 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 07:28:40,654 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 07:28:40,654 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 07:28:40,655 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 07:28:40,655 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 07:28:40,655 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 07:28:40,665 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 70 places, 68 transitions, 146 flow [2021-06-05 07:28:40,760 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2022 states, 2020 states have (on average 3.127722772277228) internal successors, (6318), 2021 states have internal predecessors, (6318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:40,768 INFO L276 IsEmpty]: Start isEmpty. Operand has 2022 states, 2020 states have (on average 3.127722772277228) internal successors, (6318), 2021 states have internal predecessors, (6318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:40,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-06-05 07:28:40,778 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:28:40,779 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 07:28:40,779 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:28:40,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:28:40,784 INFO L82 PathProgramCache]: Analyzing trace with hash -2133486681, now seen corresponding path program 1 times [2021-06-05 07:28:40,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:28:40,791 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410366299] [2021-06-05 07:28:40,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:28:40,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:28:41,118 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 07:28:41,119 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:28:41,120 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410366299] [2021-06-05 07:28:41,123 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410366299] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:28:41,123 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:28:41,123 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 07:28:41,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240260279] [2021-06-05 07:28:41,132 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 07:28:41,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:28:41,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 07:28:41,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-06-05 07:28:41,155 INFO L87 Difference]: Start difference. First operand has 2022 states, 2020 states have (on average 3.127722772277228) internal successors, (6318), 2021 states have internal predecessors, (6318), 0 states have call successors, (0), 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 07:28:41,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:28:41,362 INFO L93 Difference]: Finished difference Result 3996 states and 11572 transitions. [2021-06-05 07:28:41,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 07:28:41,364 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 07:28:41,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:28:41,393 INFO L225 Difference]: With dead ends: 3996 [2021-06-05 07:28:41,394 INFO L226 Difference]: Without dead ends: 1425 [2021-06-05 07:28:41,396 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 90.1ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-06-05 07:28:41,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1425 states. [2021-06-05 07:28:41,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1425 to 1120. [2021-06-05 07:28:41,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1120 states, 1119 states have (on average 2.7184986595174263) internal successors, (3042), 1119 states have internal predecessors, (3042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:41,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 3042 transitions. [2021-06-05 07:28:41,513 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 3042 transitions. Word has length 32 [2021-06-05 07:28:41,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:28:41,513 INFO L482 AbstractCegarLoop]: Abstraction has 1120 states and 3042 transitions. [2021-06-05 07:28:41,513 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 07:28:41,513 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 3042 transitions. [2021-06-05 07:28:41,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-06-05 07:28:41,517 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:28:41,517 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] [2021-06-05 07:28:41,518 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 07:28:41,518 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:28:41,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:28:41,519 INFO L82 PathProgramCache]: Analyzing trace with hash -730808461, now seen corresponding path program 1 times [2021-06-05 07:28:41,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:28:41,519 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204717745] [2021-06-05 07:28:41,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:28:41,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:28:41,632 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 07:28:41,633 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:28:41,633 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204717745] [2021-06-05 07:28:41,633 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204717745] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:28:41,633 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:28:41,633 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 07:28:41,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110502633] [2021-06-05 07:28:41,635 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 07:28:41,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:28:41,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 07:28:41,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-06-05 07:28:41,637 INFO L87 Difference]: Start difference. First operand 1120 states and 3042 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:41,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:28:41,762 INFO L93 Difference]: Finished difference Result 2025 states and 5412 transitions. [2021-06-05 07:28:41,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 07:28:41,763 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-06-05 07:28:41,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:28:41,774 INFO L225 Difference]: With dead ends: 2025 [2021-06-05 07:28:41,774 INFO L226 Difference]: Without dead ends: 1758 [2021-06-05 07:28:41,775 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 84.7ms TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-06-05 07:28:41,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1758 states. [2021-06-05 07:28:41,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1758 to 1270. [2021-06-05 07:28:41,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1270 states, 1269 states have (on average 2.7328605200945626) internal successors, (3468), 1269 states have internal predecessors, (3468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:41,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1270 states to 1270 states and 3468 transitions. [2021-06-05 07:28:41,821 INFO L78 Accepts]: Start accepts. Automaton has 1270 states and 3468 transitions. Word has length 37 [2021-06-05 07:28:41,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:28:41,822 INFO L482 AbstractCegarLoop]: Abstraction has 1270 states and 3468 transitions. [2021-06-05 07:28:41,823 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:41,823 INFO L276 IsEmpty]: Start isEmpty. Operand 1270 states and 3468 transitions. [2021-06-05 07:28:41,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-06-05 07:28:41,825 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:28:41,826 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] [2021-06-05 07:28:41,826 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 07:28:41,827 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:28:41,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:28:41,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1453251019, now seen corresponding path program 1 times [2021-06-05 07:28:41,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:28:41,828 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817973732] [2021-06-05 07:28:41,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:28:41,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:28:42,009 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 07:28:42,010 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:28:42,010 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817973732] [2021-06-05 07:28:42,010 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817973732] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:28:42,010 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:28:42,010 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 07:28:42,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116375080] [2021-06-05 07:28:42,011 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 07:28:42,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:28:42,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 07:28:42,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-06-05 07:28:42,012 INFO L87 Difference]: Start difference. First operand 1270 states and 3468 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:42,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:28:42,173 INFO L93 Difference]: Finished difference Result 2062 states and 5444 transitions. [2021-06-05 07:28:42,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 07:28:42,174 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-06-05 07:28:42,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:28:42,182 INFO L225 Difference]: With dead ends: 2062 [2021-06-05 07:28:42,182 INFO L226 Difference]: Without dead ends: 1758 [2021-06-05 07:28:42,183 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 87.2ms TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-06-05 07:28:42,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1758 states. [2021-06-05 07:28:42,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1758 to 1397. [2021-06-05 07:28:42,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1397 states, 1396 states have (on average 2.683381088825215) internal successors, (3746), 1396 states have internal predecessors, (3746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:42,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1397 states to 1397 states and 3746 transitions. [2021-06-05 07:28:42,220 INFO L78 Accepts]: Start accepts. Automaton has 1397 states and 3746 transitions. Word has length 37 [2021-06-05 07:28:42,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:28:42,220 INFO L482 AbstractCegarLoop]: Abstraction has 1397 states and 3746 transitions. [2021-06-05 07:28:42,220 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:42,220 INFO L276 IsEmpty]: Start isEmpty. Operand 1397 states and 3746 transitions. [2021-06-05 07:28:42,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-06-05 07:28:42,224 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:28:42,224 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] [2021-06-05 07:28:42,224 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 07:28:42,224 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:28:42,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:28:42,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1253658815, now seen corresponding path program 2 times [2021-06-05 07:28:42,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:28:42,226 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76818709] [2021-06-05 07:28:42,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:28:42,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:28:42,375 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 07:28:42,375 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:28:42,376 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76818709] [2021-06-05 07:28:42,376 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76818709] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:28:42,376 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:28:42,376 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 07:28:42,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839521813] [2021-06-05 07:28:42,376 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 07:28:42,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:28:42,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 07:28:42,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-06-05 07:28:42,377 INFO L87 Difference]: Start difference. First operand 1397 states and 3746 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:42,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:28:42,479 INFO L93 Difference]: Finished difference Result 2318 states and 6148 transitions. [2021-06-05 07:28:42,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 07:28:42,481 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-06-05 07:28:42,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:28:42,490 INFO L225 Difference]: With dead ends: 2318 [2021-06-05 07:28:42,490 INFO L226 Difference]: Without dead ends: 1987 [2021-06-05 07:28:42,490 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 75.3ms TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-06-05 07:28:42,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1987 states. [2021-06-05 07:28:42,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1987 to 1514. [2021-06-05 07:28:42,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1514 states, 1513 states have (on average 2.701916721744878) internal successors, (4088), 1513 states have internal predecessors, (4088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:42,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1514 states to 1514 states and 4088 transitions. [2021-06-05 07:28:42,537 INFO L78 Accepts]: Start accepts. Automaton has 1514 states and 4088 transitions. Word has length 37 [2021-06-05 07:28:42,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:28:42,539 INFO L482 AbstractCegarLoop]: Abstraction has 1514 states and 4088 transitions. [2021-06-05 07:28:42,539 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:42,539 INFO L276 IsEmpty]: Start isEmpty. Operand 1514 states and 4088 transitions. [2021-06-05 07:28:42,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-06-05 07:28:42,541 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:28:42,542 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, 1, 1] [2021-06-05 07:28:42,542 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 07:28:42,542 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:28:42,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:28:42,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1553921205, now seen corresponding path program 1 times [2021-06-05 07:28:42,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:28:42,543 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330489041] [2021-06-05 07:28:42,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:28:42,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:28:42,661 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 07:28:42,662 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:28:42,662 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330489041] [2021-06-05 07:28:42,662 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330489041] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:28:42,662 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:28:42,663 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 07:28:42,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87485970] [2021-06-05 07:28:42,664 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 07:28:42,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:28:42,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 07:28:42,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-06-05 07:28:42,665 INFO L87 Difference]: Start difference. First operand 1514 states and 4088 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:42,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:28:42,746 INFO L93 Difference]: Finished difference Result 2203 states and 5812 transitions. [2021-06-05 07:28:42,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 07:28:42,747 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-06-05 07:28:42,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:28:42,756 INFO L225 Difference]: With dead ends: 2203 [2021-06-05 07:28:42,756 INFO L226 Difference]: Without dead ends: 2051 [2021-06-05 07:28:42,757 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 54.6ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-06-05 07:28:42,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2051 states. [2021-06-05 07:28:42,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2051 to 1539. [2021-06-05 07:28:42,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1539 states, 1538 states have (on average 2.6937581274382314) internal successors, (4143), 1538 states have internal predecessors, (4143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:42,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1539 states to 1539 states and 4143 transitions. [2021-06-05 07:28:42,796 INFO L78 Accepts]: Start accepts. Automaton has 1539 states and 4143 transitions. Word has length 42 [2021-06-05 07:28:42,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:28:42,797 INFO L482 AbstractCegarLoop]: Abstraction has 1539 states and 4143 transitions. [2021-06-05 07:28:42,797 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:42,797 INFO L276 IsEmpty]: Start isEmpty. Operand 1539 states and 4143 transitions. [2021-06-05 07:28:42,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-06-05 07:28:42,799 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:28:42,799 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, 1, 1] [2021-06-05 07:28:42,799 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-05 07:28:42,799 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:28:42,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:28:42,800 INFO L82 PathProgramCache]: Analyzing trace with hash 591722429, now seen corresponding path program 2 times [2021-06-05 07:28:42,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:28:42,800 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66561014] [2021-06-05 07:28:42,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:28:42,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:28:42,872 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 07:28:42,873 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:28:42,873 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66561014] [2021-06-05 07:28:42,873 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66561014] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:28:42,873 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:28:42,873 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 07:28:42,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487801312] [2021-06-05 07:28:42,874 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 07:28:42,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:28:42,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 07:28:42,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-06-05 07:28:42,875 INFO L87 Difference]: Start difference. First operand 1539 states and 4143 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:43,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:28:43,097 INFO L93 Difference]: Finished difference Result 2907 states and 7732 transitions. [2021-06-05 07:28:43,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 07:28:43,098 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-06-05 07:28:43,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:28:43,108 INFO L225 Difference]: With dead ends: 2907 [2021-06-05 07:28:43,109 INFO L226 Difference]: Without dead ends: 2461 [2021-06-05 07:28:43,109 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 174.5ms TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2021-06-05 07:28:43,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2461 states. [2021-06-05 07:28:43,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2461 to 1731. [2021-06-05 07:28:43,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1731 states, 1730 states have (on average 2.707514450867052) internal successors, (4684), 1730 states have internal predecessors, (4684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:43,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 4684 transitions. [2021-06-05 07:28:43,161 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 4684 transitions. Word has length 42 [2021-06-05 07:28:43,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:28:43,161 INFO L482 AbstractCegarLoop]: Abstraction has 1731 states and 4684 transitions. [2021-06-05 07:28:43,162 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:43,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 4684 transitions. [2021-06-05 07:28:43,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-06-05 07:28:43,164 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:28:43,164 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, 1, 1] [2021-06-05 07:28:43,164 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-05 07:28:43,165 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:28:43,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:28:43,165 INFO L82 PathProgramCache]: Analyzing trace with hash -535397893, now seen corresponding path program 3 times [2021-06-05 07:28:43,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:28:43,166 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140686836] [2021-06-05 07:28:43,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:28:43,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:28:43,251 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 07:28:43,252 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:28:43,252 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140686836] [2021-06-05 07:28:43,252 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140686836] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 07:28:43,252 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 07:28:43,252 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 07:28:43,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971267242] [2021-06-05 07:28:43,253 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 07:28:43,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:28:43,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 07:28:43,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-06-05 07:28:43,254 INFO L87 Difference]: Start difference. First operand 1731 states and 4684 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:43,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:28:43,424 INFO L93 Difference]: Finished difference Result 3149 states and 8380 transitions. [2021-06-05 07:28:43,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 07:28:43,424 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-06-05 07:28:43,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:28:43,438 INFO L225 Difference]: With dead ends: 3149 [2021-06-05 07:28:43,440 INFO L226 Difference]: Without dead ends: 2834 [2021-06-05 07:28:43,442 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 126.3ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-06-05 07:28:43,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2834 states. [2021-06-05 07:28:43,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2834 to 1941. [2021-06-05 07:28:43,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1941 states, 1940 states have (on average 2.6943298969072167) internal successors, (5227), 1940 states have internal predecessors, (5227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:43,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1941 states to 1941 states and 5227 transitions. [2021-06-05 07:28:43,511 INFO L78 Accepts]: Start accepts. Automaton has 1941 states and 5227 transitions. Word has length 42 [2021-06-05 07:28:43,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:28:43,511 INFO L482 AbstractCegarLoop]: Abstraction has 1941 states and 5227 transitions. [2021-06-05 07:28:43,512 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:43,512 INFO L276 IsEmpty]: Start isEmpty. Operand 1941 states and 5227 transitions. [2021-06-05 07:28:43,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 07:28:43,515 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:28:43,515 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, 1, 1] [2021-06-05 07:28:43,515 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-05 07:28:43,515 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:28:43,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:28:43,516 INFO L82 PathProgramCache]: Analyzing trace with hash 847069600, now seen corresponding path program 1 times [2021-06-05 07:28:43,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:28:43,516 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478631710] [2021-06-05 07:28:43,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:28:43,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:28:43,644 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 07:28:43,644 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:28:43,644 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478631710] [2021-06-05 07:28:43,647 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478631710] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:43,648 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164331017] [2021-06-05 07:28:43,648 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 07:28:43,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:28:43,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-05 07:28:43,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:28:44,155 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 07:28:44,156 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164331017] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:44,156 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:28:44,156 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-05 07:28:44,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264795641] [2021-06-05 07:28:44,157 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 07:28:44,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:28:44,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 07:28:44,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-06-05 07:28:44,158 INFO L87 Difference]: Start difference. First operand 1941 states and 5227 transitions. Second operand has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:44,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:28:44,413 INFO L93 Difference]: Finished difference Result 3261 states and 8492 transitions. [2021-06-05 07:28:44,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 07:28:44,413 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 07:28:44,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:28:44,439 INFO L225 Difference]: With dead ends: 3261 [2021-06-05 07:28:44,439 INFO L226 Difference]: Without dead ends: 2781 [2021-06-05 07:28:44,440 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 269.5ms TimeCoverageRelationStatistics Valid=140, Invalid=412, Unknown=0, NotChecked=0, Total=552 [2021-06-05 07:28:44,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2781 states. [2021-06-05 07:28:44,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2781 to 2030. [2021-06-05 07:28:44,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2030 states, 2029 states have (on average 2.6638738294726467) internal successors, (5405), 2029 states have internal predecessors, (5405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:44,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2030 states to 2030 states and 5405 transitions. [2021-06-05 07:28:44,498 INFO L78 Accepts]: Start accepts. Automaton has 2030 states and 5405 transitions. Word has length 47 [2021-06-05 07:28:44,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:28:44,499 INFO L482 AbstractCegarLoop]: Abstraction has 2030 states and 5405 transitions. [2021-06-05 07:28:44,499 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:44,499 INFO L276 IsEmpty]: Start isEmpty. Operand 2030 states and 5405 transitions. [2021-06-05 07:28:44,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 07:28:44,503 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:28:44,504 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, 1, 1] [2021-06-05 07:28:44,725 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-06-05 07:28:44,725 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:28:44,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:28:44,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1597229004, now seen corresponding path program 2 times [2021-06-05 07:28:44,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:28:44,726 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504554977] [2021-06-05 07:28:44,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:28:44,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:28:44,846 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 07:28:44,846 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:28:44,847 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504554977] [2021-06-05 07:28:44,847 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504554977] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:44,848 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817648428] [2021-06-05 07:28:44,848 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 07:28:44,934 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:28:44,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:28:44,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-05 07:28:44,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:28:45,163 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 07:28:45,163 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817648428] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:45,163 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:28:45,163 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-05 07:28:45,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815451910] [2021-06-05 07:28:45,164 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 07:28:45,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:28:45,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 07:28:45,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-06-05 07:28:45,165 INFO L87 Difference]: Start difference. First operand 2030 states and 5405 transitions. Second operand has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:45,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:28:45,347 INFO L93 Difference]: Finished difference Result 3013 states and 7804 transitions. [2021-06-05 07:28:45,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 07:28:45,348 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 07:28:45,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:28:45,354 INFO L225 Difference]: With dead ends: 3013 [2021-06-05 07:28:45,354 INFO L226 Difference]: Without dead ends: 2861 [2021-06-05 07:28:45,355 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 193.8ms TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2021-06-05 07:28:45,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2861 states. [2021-06-05 07:28:45,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2861 to 2064. [2021-06-05 07:28:45,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2064 states, 2063 states have (on average 2.6539020843431897) internal successors, (5475), 2063 states have internal predecessors, (5475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:45,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2064 states to 2064 states and 5475 transitions. [2021-06-05 07:28:45,405 INFO L78 Accepts]: Start accepts. Automaton has 2064 states and 5475 transitions. Word has length 47 [2021-06-05 07:28:45,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:28:45,405 INFO L482 AbstractCegarLoop]: Abstraction has 2064 states and 5475 transitions. [2021-06-05 07:28:45,405 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:45,405 INFO L276 IsEmpty]: Start isEmpty. Operand 2064 states and 5475 transitions. [2021-06-05 07:28:45,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 07:28:45,409 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:28:45,409 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, 1, 1] [2021-06-05 07:28:45,632 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:28:45,632 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:28:45,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:28:45,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1224443028, now seen corresponding path program 3 times [2021-06-05 07:28:45,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:28:45,633 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231335442] [2021-06-05 07:28:45,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:28:45,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:28:45,733 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 07:28:45,733 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:28:45,733 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231335442] [2021-06-05 07:28:45,734 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231335442] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:45,734 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634810953] [2021-06-05 07:28:45,734 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 07:28:45,816 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-06-05 07:28:45,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:28:45,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-05 07:28:45,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:28:45,991 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 07:28:45,991 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634810953] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:45,991 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:28:45,992 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-05 07:28:45,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300658923] [2021-06-05 07:28:45,992 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 07:28:45,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:28:45,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 07:28:45,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-06-05 07:28:45,993 INFO L87 Difference]: Start difference. First operand 2064 states and 5475 transitions. Second operand has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:46,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:28:46,232 INFO L93 Difference]: Finished difference Result 3525 states and 9020 transitions. [2021-06-05 07:28:46,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 07:28:46,233 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 07:28:46,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:28:46,239 INFO L225 Difference]: With dead ends: 3525 [2021-06-05 07:28:46,239 INFO L226 Difference]: Without dead ends: 3045 [2021-06-05 07:28:46,239 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 207.1ms TimeCoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2021-06-05 07:28:46,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3045 states. [2021-06-05 07:28:46,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3045 to 2094. [2021-06-05 07:28:46,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2094 states, 2093 states have (on average 2.661729574773053) internal successors, (5571), 2093 states have internal predecessors, (5571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:46,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2094 states to 2094 states and 5571 transitions. [2021-06-05 07:28:46,288 INFO L78 Accepts]: Start accepts. Automaton has 2094 states and 5571 transitions. Word has length 47 [2021-06-05 07:28:46,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:28:46,289 INFO L482 AbstractCegarLoop]: Abstraction has 2094 states and 5571 transitions. [2021-06-05 07:28:46,289 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:46,289 INFO L276 IsEmpty]: Start isEmpty. Operand 2094 states and 5571 transitions. [2021-06-05 07:28:46,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 07:28:46,292 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:28:46,292 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, 1, 1] [2021-06-05 07:28:46,504 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-06-05 07:28:46,505 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:28:46,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:28:46,505 INFO L82 PathProgramCache]: Analyzing trace with hash 511209706, now seen corresponding path program 4 times [2021-06-05 07:28:46,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:28:46,506 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170718849] [2021-06-05 07:28:46,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:28:46,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:28:46,589 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 07:28:46,589 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:28:46,589 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170718849] [2021-06-05 07:28:46,589 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170718849] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:46,589 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359374707] [2021-06-05 07:28:46,590 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 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 07:28:46,667 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:28:46,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:28:46,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-05 07:28:46,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:28:46,838 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 07:28:46,838 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359374707] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:46,838 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:28:46,838 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-05 07:28:46,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102242245] [2021-06-05 07:28:46,839 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 07:28:46,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:28:46,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 07:28:46,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-06-05 07:28:46,840 INFO L87 Difference]: Start difference. First operand 2094 states and 5571 transitions. Second operand has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:47,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:28:47,179 INFO L93 Difference]: Finished difference Result 4570 states and 11964 transitions. [2021-06-05 07:28:47,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 07:28:47,180 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 07:28:47,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:28:47,188 INFO L225 Difference]: With dead ends: 4570 [2021-06-05 07:28:47,189 INFO L226 Difference]: Without dead ends: 3833 [2021-06-05 07:28:47,189 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 292.7ms TimeCoverageRelationStatistics Valid=231, Invalid=761, Unknown=0, NotChecked=0, Total=992 [2021-06-05 07:28:47,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3833 states. [2021-06-05 07:28:47,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3833 to 2235. [2021-06-05 07:28:47,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2235 states, 2234 states have (on average 2.6965085049239033) internal successors, (6024), 2234 states have internal predecessors, (6024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:47,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2235 states to 2235 states and 6024 transitions. [2021-06-05 07:28:47,278 INFO L78 Accepts]: Start accepts. Automaton has 2235 states and 6024 transitions. Word has length 47 [2021-06-05 07:28:47,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:28:47,278 INFO L482 AbstractCegarLoop]: Abstraction has 2235 states and 6024 transitions. [2021-06-05 07:28:47,279 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:47,279 INFO L276 IsEmpty]: Start isEmpty. Operand 2235 states and 6024 transitions. [2021-06-05 07:28:47,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 07:28:47,282 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:28:47,282 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, 1, 1] [2021-06-05 07:28:47,502 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:28:47,502 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:28:47,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:28:47,503 INFO L82 PathProgramCache]: Analyzing trace with hash 464719534, now seen corresponding path program 5 times [2021-06-05 07:28:47,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:28:47,503 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673563113] [2021-06-05 07:28:47,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:28:47,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:28:47,581 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 07:28:47,582 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:28:47,582 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673563113] [2021-06-05 07:28:47,582 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673563113] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:47,582 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536305265] [2021-06-05 07:28:47,582 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 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 07:28:47,643 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:28:47,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:28:47,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-05 07:28:47,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:28:47,788 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 07:28:47,789 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536305265] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:47,789 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:28:47,789 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-05 07:28:47,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388850608] [2021-06-05 07:28:47,789 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 07:28:47,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:28:47,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 07:28:47,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-06-05 07:28:47,790 INFO L87 Difference]: Start difference. First operand 2235 states and 6024 transitions. Second operand has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:48,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:28:48,059 INFO L93 Difference]: Finished difference Result 4350 states and 11284 transitions. [2021-06-05 07:28:48,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 07:28:48,060 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 07:28:48,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:28:48,068 INFO L225 Difference]: With dead ends: 4350 [2021-06-05 07:28:48,068 INFO L226 Difference]: Without dead ends: 3958 [2021-06-05 07:28:48,069 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 234.3ms TimeCoverageRelationStatistics Valid=175, Invalid=637, Unknown=0, NotChecked=0, Total=812 [2021-06-05 07:28:48,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3958 states. [2021-06-05 07:28:48,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3958 to 2423. [2021-06-05 07:28:48,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2423 states, 2422 states have (on average 2.7345169281585466) internal successors, (6623), 2422 states have internal predecessors, (6623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:48,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2423 states to 2423 states and 6623 transitions. [2021-06-05 07:28:48,132 INFO L78 Accepts]: Start accepts. Automaton has 2423 states and 6623 transitions. Word has length 47 [2021-06-05 07:28:48,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:28:48,132 INFO L482 AbstractCegarLoop]: Abstraction has 2423 states and 6623 transitions. [2021-06-05 07:28:48,133 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:48,133 INFO L276 IsEmpty]: Start isEmpty. Operand 2423 states and 6623 transitions. [2021-06-05 07:28:48,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 07:28:48,136 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:28:48,136 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, 1, 1] [2021-06-05 07:28:48,352 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:28:48,353 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:28:48,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:28:48,353 INFO L82 PathProgramCache]: Analyzing trace with hash 920243988, now seen corresponding path program 6 times [2021-06-05 07:28:48,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:28:48,353 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634225269] [2021-06-05 07:28:48,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:28:48,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:28:48,416 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 07:28:48,416 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:28:48,416 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634225269] [2021-06-05 07:28:48,416 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634225269] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:48,416 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416218757] [2021-06-05 07:28:48,416 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 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 07:28:48,479 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-06-05 07:28:48,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:28:48,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-05 07:28:48,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:28:48,656 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 07:28:48,656 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416218757] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:48,657 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:28:48,657 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-05 07:28:48,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565735341] [2021-06-05 07:28:48,657 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 07:28:48,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:28:48,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 07:28:48,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-06-05 07:28:48,658 INFO L87 Difference]: Start difference. First operand 2423 states and 6623 transitions. Second operand has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:49,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:28:49,268 INFO L93 Difference]: Finished difference Result 5771 states and 15228 transitions. [2021-06-05 07:28:49,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 07:28:49,269 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 07:28:49,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:28:49,279 INFO L225 Difference]: With dead ends: 5771 [2021-06-05 07:28:49,280 INFO L226 Difference]: Without dead ends: 4898 [2021-06-05 07:28:49,280 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 510.1ms TimeCoverageRelationStatistics Valid=381, Invalid=1425, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 07:28:49,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4898 states. [2021-06-05 07:28:49,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4898 to 2817. [2021-06-05 07:28:49,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2817 states, 2816 states have (on average 2.7169744318181817) internal successors, (7651), 2816 states have internal predecessors, (7651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:49,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2817 states to 2817 states and 7651 transitions. [2021-06-05 07:28:49,351 INFO L78 Accepts]: Start accepts. Automaton has 2817 states and 7651 transitions. Word has length 47 [2021-06-05 07:28:49,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:28:49,351 INFO L482 AbstractCegarLoop]: Abstraction has 2817 states and 7651 transitions. [2021-06-05 07:28:49,351 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:49,352 INFO L276 IsEmpty]: Start isEmpty. Operand 2817 states and 7651 transitions. [2021-06-05 07:28:49,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-06-05 07:28:49,356 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:28:49,356 INFO L521 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2021-06-05 07:28:49,576 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:28:49,577 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:28:49,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:28:49,577 INFO L82 PathProgramCache]: Analyzing trace with hash 117458473, now seen corresponding path program 7 times [2021-06-05 07:28:49,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:28:49,578 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682758512] [2021-06-05 07:28:49,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:28:49,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:28:49,662 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:28:49,662 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:28:49,662 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682758512] [2021-06-05 07:28:49,662 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682758512] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:49,663 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520793296] [2021-06-05 07:28:49,663 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 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 07:28:49,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:28:49,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-05 07:28:49,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:28:49,873 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:28:49,874 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520793296] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:49,874 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:28:49,874 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 07:28:49,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647594394] [2021-06-05 07:28:49,874 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:28:49,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:28:49,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:28:49,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:28:49,875 INFO L87 Difference]: Start difference. First operand 2817 states and 7651 transitions. Second operand has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:50,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:28:50,057 INFO L93 Difference]: Finished difference Result 4071 states and 10562 transitions. [2021-06-05 07:28:50,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 07:28:50,057 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-06-05 07:28:50,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:28:50,066 INFO L225 Difference]: With dead ends: 4071 [2021-06-05 07:28:50,066 INFO L226 Difference]: Without dead ends: 3919 [2021-06-05 07:28:50,066 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 194.6ms TimeCoverageRelationStatistics Valid=152, Invalid=400, Unknown=0, NotChecked=0, Total=552 [2021-06-05 07:28:50,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3919 states. [2021-06-05 07:28:50,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3919 to 2867. [2021-06-05 07:28:50,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2867 states, 2866 states have (on average 2.7079553384508026) internal successors, (7761), 2866 states have internal predecessors, (7761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:50,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2867 states to 2867 states and 7761 transitions. [2021-06-05 07:28:50,145 INFO L78 Accepts]: Start accepts. Automaton has 2867 states and 7761 transitions. Word has length 52 [2021-06-05 07:28:50,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:28:50,145 INFO L482 AbstractCegarLoop]: Abstraction has 2867 states and 7761 transitions. [2021-06-05 07:28:50,145 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:50,145 INFO L276 IsEmpty]: Start isEmpty. Operand 2867 states and 7761 transitions. [2021-06-05 07:28:50,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-06-05 07:28:50,149 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:28:50,150 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, 1, 1] [2021-06-05 07:28:50,363 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-06-05 07:28:50,364 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:28:50,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:28:50,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1743674851, now seen corresponding path program 1 times [2021-06-05 07:28:50,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:28:50,364 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073152798] [2021-06-05 07:28:50,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:28:50,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:28:50,439 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 07:28:50,440 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:28:50,440 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073152798] [2021-06-05 07:28:50,440 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073152798] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:50,440 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346253020] [2021-06-05 07:28:50,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 07:28:50,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:28:50,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-05 07:28:50,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:28:50,628 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 07:28:50,628 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346253020] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:50,628 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:28:50,629 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 07:28:50,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399592283] [2021-06-05 07:28:50,629 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:28:50,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:28:50,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:28:50,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:28:50,630 INFO L87 Difference]: Start difference. First operand 2867 states and 7761 transitions. Second operand has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:50,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:28:50,859 INFO L93 Difference]: Finished difference Result 4087 states and 10594 transitions. [2021-06-05 07:28:50,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 07:28:50,859 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-06-05 07:28:50,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:28:50,868 INFO L225 Difference]: With dead ends: 4087 [2021-06-05 07:28:50,868 INFO L226 Difference]: Without dead ends: 3935 [2021-06-05 07:28:50,869 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 217.0ms TimeCoverageRelationStatistics Valid=156, Invalid=444, Unknown=0, NotChecked=0, Total=600 [2021-06-05 07:28:50,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3935 states. [2021-06-05 07:28:50,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3935 to 2917. [2021-06-05 07:28:50,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2917 states, 2916 states have (on average 2.6992455418381343) internal successors, (7871), 2916 states have internal predecessors, (7871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:50,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2917 states to 2917 states and 7871 transitions. [2021-06-05 07:28:50,927 INFO L78 Accepts]: Start accepts. Automaton has 2917 states and 7871 transitions. Word has length 52 [2021-06-05 07:28:50,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:28:50,927 INFO L482 AbstractCegarLoop]: Abstraction has 2917 states and 7871 transitions. [2021-06-05 07:28:50,927 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:50,927 INFO L276 IsEmpty]: Start isEmpty. Operand 2917 states and 7871 transitions. [2021-06-05 07:28:50,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-06-05 07:28:50,932 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:28:50,932 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, 1, 1] [2021-06-05 07:28:51,157 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-06-05 07:28:51,157 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:28:51,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:28:51,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1270346633, now seen corresponding path program 2 times [2021-06-05 07:28:51,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:28:51,158 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113202023] [2021-06-05 07:28:51,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:28:51,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:28:51,235 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 07:28:51,235 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:28:51,235 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113202023] [2021-06-05 07:28:51,236 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113202023] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:51,236 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448908608] [2021-06-05 07:28:51,236 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 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 07:28:51,292 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:28:51,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:28:51,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-05 07:28:51,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:28:51,455 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 07:28:51,456 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448908608] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:51,456 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:28:51,456 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 07:28:51,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741694358] [2021-06-05 07:28:51,458 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:28:51,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:28:51,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:28:51,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:28:51,459 INFO L87 Difference]: Start difference. First operand 2917 states and 7871 transitions. Second operand has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:51,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:28:51,674 INFO L93 Difference]: Finished difference Result 3927 states and 10274 transitions. [2021-06-05 07:28:51,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 07:28:51,675 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-06-05 07:28:51,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:28:51,680 INFO L225 Difference]: With dead ends: 3927 [2021-06-05 07:28:51,680 INFO L226 Difference]: Without dead ends: 3775 [2021-06-05 07:28:51,681 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 205.8ms TimeCoverageRelationStatistics Valid=126, Invalid=380, Unknown=0, NotChecked=0, Total=506 [2021-06-05 07:28:51,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3775 states. [2021-06-05 07:28:51,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3775 to 2916. [2021-06-05 07:28:51,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2916 states, 2915 states have (on average 2.697770154373928) internal successors, (7864), 2915 states have internal predecessors, (7864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:51,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2916 states to 2916 states and 7864 transitions. [2021-06-05 07:28:51,735 INFO L78 Accepts]: Start accepts. Automaton has 2916 states and 7864 transitions. Word has length 52 [2021-06-05 07:28:51,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:28:51,735 INFO L482 AbstractCegarLoop]: Abstraction has 2916 states and 7864 transitions. [2021-06-05 07:28:51,735 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:51,735 INFO L276 IsEmpty]: Start isEmpty. Operand 2916 states and 7864 transitions. [2021-06-05 07:28:51,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-06-05 07:28:51,743 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:28:51,744 INFO L521 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2021-06-05 07:28:51,968 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-06-05 07:28:51,968 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:28:51,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:28:51,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1887847499, now seen corresponding path program 8 times [2021-06-05 07:28:51,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:28:51,969 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509831688] [2021-06-05 07:28:51,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:28:51,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:28:52,049 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:28:52,050 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:28:52,050 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509831688] [2021-06-05 07:28:52,050 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509831688] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:52,050 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216137689] [2021-06-05 07:28:52,051 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 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 07:28:52,119 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:28:52,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:28:52,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-05 07:28:52,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:28:52,271 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:28:52,272 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216137689] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:52,272 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:28:52,272 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 07:28:52,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790024647] [2021-06-05 07:28:52,272 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:28:52,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:28:52,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:28:52,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:28:52,273 INFO L87 Difference]: Start difference. First operand 2916 states and 7864 transitions. Second operand has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:52,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:28:52,493 INFO L93 Difference]: Finished difference Result 4236 states and 10907 transitions. [2021-06-05 07:28:52,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 07:28:52,493 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-06-05 07:28:52,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:28:52,500 INFO L225 Difference]: With dead ends: 4236 [2021-06-05 07:28:52,501 INFO L226 Difference]: Without dead ends: 4084 [2021-06-05 07:28:52,501 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 193.2ms TimeCoverageRelationStatistics Valid=160, Invalid=440, Unknown=0, NotChecked=0, Total=600 [2021-06-05 07:28:52,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4084 states. [2021-06-05 07:28:52,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4084 to 2891. [2021-06-05 07:28:52,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2891 states, 2890 states have (on average 2.702076124567474) internal successors, (7809), 2890 states have internal predecessors, (7809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:52,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2891 states to 2891 states and 7809 transitions. [2021-06-05 07:28:52,561 INFO L78 Accepts]: Start accepts. Automaton has 2891 states and 7809 transitions. Word has length 52 [2021-06-05 07:28:52,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:28:52,562 INFO L482 AbstractCegarLoop]: Abstraction has 2891 states and 7809 transitions. [2021-06-05 07:28:52,562 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:52,562 INFO L276 IsEmpty]: Start isEmpty. Operand 2891 states and 7809 transitions. [2021-06-05 07:28:52,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-06-05 07:28:52,567 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:28:52,567 INFO L521 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2021-06-05 07:28:52,790 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-06-05 07:28:52,791 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:28:52,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:28:52,791 INFO L82 PathProgramCache]: Analyzing trace with hash -275953247, now seen corresponding path program 9 times [2021-06-05 07:28:52,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:28:52,791 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814342059] [2021-06-05 07:28:52,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:28:52,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:28:52,868 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:28:52,868 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:28:52,868 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814342059] [2021-06-05 07:28:52,868 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814342059] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:52,868 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973329614] [2021-06-05 07:28:52,868 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 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 07:28:52,927 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 07:28:52,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:28:52,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-05 07:28:52,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:28:53,064 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:28:53,064 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973329614] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:53,064 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:28:53,064 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 07:28:53,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297425103] [2021-06-05 07:28:53,065 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:28:53,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:28:53,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:28:53,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:28:53,066 INFO L87 Difference]: Start difference. First operand 2891 states and 7809 transitions. Second operand has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:53,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:28:53,421 INFO L93 Difference]: Finished difference Result 5047 states and 13218 transitions. [2021-06-05 07:28:53,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 07:28:53,422 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-06-05 07:28:53,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:28:53,426 INFO L225 Difference]: With dead ends: 5047 [2021-06-05 07:28:53,427 INFO L226 Difference]: Without dead ends: 4743 [2021-06-05 07:28:53,427 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 301.6ms TimeCoverageRelationStatistics Valid=240, Invalid=752, Unknown=0, NotChecked=0, Total=992 [2021-06-05 07:28:53,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4743 states. [2021-06-05 07:28:53,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4743 to 3086. [2021-06-05 07:28:53,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3086 states, 3085 states have (on average 2.7354943273905996) internal successors, (8439), 3085 states have internal predecessors, (8439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:53,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3086 states to 3086 states and 8439 transitions. [2021-06-05 07:28:53,493 INFO L78 Accepts]: Start accepts. Automaton has 3086 states and 8439 transitions. Word has length 52 [2021-06-05 07:28:53,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:28:53,493 INFO L482 AbstractCegarLoop]: Abstraction has 3086 states and 8439 transitions. [2021-06-05 07:28:53,493 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:53,493 INFO L276 IsEmpty]: Start isEmpty. Operand 3086 states and 8439 transitions. [2021-06-05 07:28:53,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-06-05 07:28:53,498 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:28:53,498 INFO L521 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2021-06-05 07:28:53,720 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-06-05 07:28:53,720 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:28:53,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:28:53,721 INFO L82 PathProgramCache]: Analyzing trace with hash 179571207, now seen corresponding path program 10 times [2021-06-05 07:28:53,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:28:53,721 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881173836] [2021-06-05 07:28:53,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:28:53,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:28:53,790 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:28:53,790 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:28:53,790 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881173836] [2021-06-05 07:28:53,790 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881173836] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:53,790 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221207409] [2021-06-05 07:28:53,790 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 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 07:28:53,844 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:28:53,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:28:53,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-05 07:28:53,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:28:53,993 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:28:53,993 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221207409] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:53,993 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:28:53,994 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 07:28:53,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367136259] [2021-06-05 07:28:53,994 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:28:53,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:28:53,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:28:53,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:28:53,995 INFO L87 Difference]: Start difference. First operand 3086 states and 8439 transitions. Second operand has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:54,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:28:54,514 INFO L93 Difference]: Finished difference Result 6180 states and 16594 transitions. [2021-06-05 07:28:54,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 07:28:54,514 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-06-05 07:28:54,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:28:54,521 INFO L225 Difference]: With dead ends: 6180 [2021-06-05 07:28:54,521 INFO L226 Difference]: Without dead ends: 5504 [2021-06-05 07:28:54,522 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 502 ImplicationChecksByTransitivity, 447.4ms TimeCoverageRelationStatistics Valid=427, Invalid=1379, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 07:28:54,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5504 states. [2021-06-05 07:28:54,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5504 to 3235. [2021-06-05 07:28:54,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3235 states, 3234 states have (on average 2.7680890538033394) internal successors, (8952), 3234 states have internal predecessors, (8952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:54,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3235 states to 3235 states and 8952 transitions. [2021-06-05 07:28:54,624 INFO L78 Accepts]: Start accepts. Automaton has 3235 states and 8952 transitions. Word has length 52 [2021-06-05 07:28:54,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:28:54,624 INFO L482 AbstractCegarLoop]: Abstraction has 3235 states and 8952 transitions. [2021-06-05 07:28:54,625 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:54,625 INFO L276 IsEmpty]: Start isEmpty. Operand 3235 states and 8952 transitions. [2021-06-05 07:28:54,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-06-05 07:28:54,629 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:28:54,630 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, 1, 1] [2021-06-05 07:28:54,852 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:28:54,852 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:28:54,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:28:54,853 INFO L82 PathProgramCache]: Analyzing trace with hash -97531933, now seen corresponding path program 3 times [2021-06-05 07:28:54,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:28:54,853 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041608209] [2021-06-05 07:28:54,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:28:54,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:28:54,947 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 07:28:54,947 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:28:54,947 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041608209] [2021-06-05 07:28:54,947 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041608209] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:54,947 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120029999] [2021-06-05 07:28:54,948 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 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 07:28:55,034 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 07:28:55,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:28:55,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-05 07:28:55,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:28:55,178 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 07:28:55,179 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1120029999] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:55,179 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:28:55,179 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 07:28:55,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306513123] [2021-06-05 07:28:55,180 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:28:55,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:28:55,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:28:55,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:28:55,181 INFO L87 Difference]: Start difference. First operand 3235 states and 8952 transitions. Second operand has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:55,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:28:55,509 INFO L93 Difference]: Finished difference Result 5014 states and 13181 transitions. [2021-06-05 07:28:55,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 07:28:55,510 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-06-05 07:28:55,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:28:55,516 INFO L225 Difference]: With dead ends: 5014 [2021-06-05 07:28:55,516 INFO L226 Difference]: Without dead ends: 4862 [2021-06-05 07:28:55,516 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 304.1ms TimeCoverageRelationStatistics Valid=221, Invalid=709, Unknown=0, NotChecked=0, Total=930 [2021-06-05 07:28:55,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4862 states. [2021-06-05 07:28:55,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4862 to 3275. [2021-06-05 07:28:55,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3275 states, 3274 states have (on average 2.775809407452657) internal successors, (9088), 3274 states have internal predecessors, (9088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:55,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3275 states to 3275 states and 9088 transitions. [2021-06-05 07:28:55,577 INFO L78 Accepts]: Start accepts. Automaton has 3275 states and 9088 transitions. Word has length 52 [2021-06-05 07:28:55,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:28:55,577 INFO L482 AbstractCegarLoop]: Abstraction has 3275 states and 9088 transitions. [2021-06-05 07:28:55,577 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:55,577 INFO L276 IsEmpty]: Start isEmpty. Operand 3275 states and 9088 transitions. [2021-06-05 07:28:55,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-06-05 07:28:55,581 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:28:55,581 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, 1, 1] [2021-06-05 07:28:55,802 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-06-05 07:28:55,802 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:28:55,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:28:55,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1811410767, now seen corresponding path program 4 times [2021-06-05 07:28:55,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:28:55,803 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108342505] [2021-06-05 07:28:55,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:28:55,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:28:55,886 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 07:28:55,886 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:28:55,886 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108342505] [2021-06-05 07:28:55,886 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108342505] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:55,886 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437442818] [2021-06-05 07:28:55,886 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 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 07:28:55,942 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:28:55,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:28:55,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-05 07:28:55,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:28:56,080 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 07:28:56,081 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437442818] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:56,081 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:28:56,081 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 07:28:56,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093203093] [2021-06-05 07:28:56,081 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:28:56,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:28:56,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:28:56,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:28:56,082 INFO L87 Difference]: Start difference. First operand 3275 states and 9088 transitions. Second operand has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:56,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:28:56,443 INFO L93 Difference]: Finished difference Result 5278 states and 14184 transitions. [2021-06-05 07:28:56,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 07:28:56,443 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-06-05 07:28:56,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:28:56,449 INFO L225 Difference]: With dead ends: 5278 [2021-06-05 07:28:56,450 INFO L226 Difference]: Without dead ends: 5126 [2021-06-05 07:28:56,450 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 313.0ms TimeCoverageRelationStatistics Valid=246, Invalid=746, Unknown=0, NotChecked=0, Total=992 [2021-06-05 07:28:56,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5126 states. [2021-06-05 07:28:56,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5126 to 3363. [2021-06-05 07:28:56,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3363 states, 3362 states have (on average 2.796252230814991) internal successors, (9401), 3362 states have internal predecessors, (9401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:56,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3363 states to 3363 states and 9401 transitions. [2021-06-05 07:28:56,530 INFO L78 Accepts]: Start accepts. Automaton has 3363 states and 9401 transitions. Word has length 52 [2021-06-05 07:28:56,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:28:56,531 INFO L482 AbstractCegarLoop]: Abstraction has 3363 states and 9401 transitions. [2021-06-05 07:28:56,531 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:56,531 INFO L276 IsEmpty]: Start isEmpty. Operand 3363 states and 9401 transitions. [2021-06-05 07:28:56,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-06-05 07:28:56,536 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:28:56,536 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, 1, 1] [2021-06-05 07:28:56,748 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:28:56,749 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:28:56,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:28:56,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1680986989, now seen corresponding path program 5 times [2021-06-05 07:28:56,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:28:56,750 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435119290] [2021-06-05 07:28:56,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:28:56,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:28:56,829 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 07:28:56,829 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:28:56,829 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435119290] [2021-06-05 07:28:56,829 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435119290] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:56,829 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794354829] [2021-06-05 07:28:56,830 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 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 07:28:56,883 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 07:28:56,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:28:56,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-05 07:28:56,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:28:57,027 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 07:28:57,027 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794354829] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:57,027 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:28:57,027 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 07:28:57,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910839741] [2021-06-05 07:28:57,028 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 07:28:57,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:28:57,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 07:28:57,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2021-06-05 07:28:57,029 INFO L87 Difference]: Start difference. First operand 3363 states and 9401 transitions. Second operand has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:57,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:28:57,575 INFO L93 Difference]: Finished difference Result 6683 states and 18179 transitions. [2021-06-05 07:28:57,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 07:28:57,576 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-06-05 07:28:57,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:28:57,582 INFO L225 Difference]: With dead ends: 6683 [2021-06-05 07:28:57,582 INFO L226 Difference]: Without dead ends: 6253 [2021-06-05 07:28:57,583 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 467.2ms TimeCoverageRelationStatistics Valid=470, Invalid=1510, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 07:28:57,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6253 states. [2021-06-05 07:28:57,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6253 to 3417. [2021-06-05 07:28:57,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3417 states, 3416 states have (on average 2.768735362997658) internal successors, (9458), 3416 states have internal predecessors, (9458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:57,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3417 states to 3417 states and 9458 transitions. [2021-06-05 07:28:57,649 INFO L78 Accepts]: Start accepts. Automaton has 3417 states and 9458 transitions. Word has length 52 [2021-06-05 07:28:57,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:28:57,649 INFO L482 AbstractCegarLoop]: Abstraction has 3417 states and 9458 transitions. [2021-06-05 07:28:57,649 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:57,649 INFO L276 IsEmpty]: Start isEmpty. Operand 3417 states and 9458 transitions. [2021-06-05 07:28:57,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-05 07:28:57,654 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:28:57,654 INFO L521 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2021-06-05 07:28:57,856 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-06-05 07:28:57,856 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:28:57,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:28:57,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1005538624, now seen corresponding path program 11 times [2021-06-05 07:28:57,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:28:57,857 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322169779] [2021-06-05 07:28:57,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:28:57,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:28:57,971 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:28:57,971 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:28:57,971 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322169779] [2021-06-05 07:28:57,971 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322169779] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:57,971 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546100259] [2021-06-05 07:28:57,971 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 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 07:28:58,031 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 07:28:58,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:28:58,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 07:28:58,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:28:58,200 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:28:58,200 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546100259] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:58,200 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:28:58,200 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 07:28:58,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591482645] [2021-06-05 07:28:58,201 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:28:58,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:28:58,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:28:58,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:28:58,202 INFO L87 Difference]: Start difference. First operand 3417 states and 9458 transitions. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:58,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:28:58,367 INFO L93 Difference]: Finished difference Result 4779 states and 12701 transitions. [2021-06-05 07:28:58,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-05 07:28:58,368 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-06-05 07:28:58,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:28:58,374 INFO L225 Difference]: With dead ends: 4779 [2021-06-05 07:28:58,375 INFO L226 Difference]: Without dead ends: 4627 [2021-06-05 07:28:58,375 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 233.4ms TimeCoverageRelationStatistics Valid=157, Invalid=395, Unknown=0, NotChecked=0, Total=552 [2021-06-05 07:28:58,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4627 states. [2021-06-05 07:28:58,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4627 to 3492. [2021-06-05 07:28:58,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3492 states, 3491 states have (on average 2.75651675737611) internal successors, (9623), 3491 states have internal predecessors, (9623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:58,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3492 states to 3492 states and 9623 transitions. [2021-06-05 07:28:58,440 INFO L78 Accepts]: Start accepts. Automaton has 3492 states and 9623 transitions. Word has length 57 [2021-06-05 07:28:58,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:28:58,440 INFO L482 AbstractCegarLoop]: Abstraction has 3492 states and 9623 transitions. [2021-06-05 07:28:58,440 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:58,440 INFO L276 IsEmpty]: Start isEmpty. Operand 3492 states and 9623 transitions. [2021-06-05 07:28:58,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-05 07:28:58,445 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:28:58,445 INFO L521 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2021-06-05 07:28:58,669 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:28:58,670 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:28:58,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:28:58,670 INFO L82 PathProgramCache]: Analyzing trace with hash 845130068, now seen corresponding path program 12 times [2021-06-05 07:28:58,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:28:58,670 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746410001] [2021-06-05 07:28:58,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:28:58,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:28:58,758 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:28:58,758 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:28:58,758 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746410001] [2021-06-05 07:28:58,759 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746410001] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:58,759 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509429714] [2021-06-05 07:28:58,759 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 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 07:28:58,816 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 07:28:58,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:28:58,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 07:28:58,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:28:58,994 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:28:58,994 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509429714] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:58,994 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:28:58,994 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 07:28:58,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254332206] [2021-06-05 07:28:58,994 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:28:58,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:28:58,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:28:58,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:28:58,995 INFO L87 Difference]: Start difference. First operand 3492 states and 9623 transitions. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:59,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:28:59,244 INFO L93 Difference]: Finished difference Result 4955 states and 13053 transitions. [2021-06-05 07:28:59,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 07:28:59,245 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-06-05 07:28:59,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:28:59,251 INFO L225 Difference]: With dead ends: 4955 [2021-06-05 07:28:59,252 INFO L226 Difference]: Without dead ends: 4803 [2021-06-05 07:28:59,253 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 264.9ms TimeCoverageRelationStatistics Valid=199, Invalid=503, Unknown=0, NotChecked=0, Total=702 [2021-06-05 07:28:59,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4803 states. [2021-06-05 07:28:59,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4803 to 3492. [2021-06-05 07:28:59,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3492 states, 3491 states have (on average 2.75651675737611) internal successors, (9623), 3491 states have internal predecessors, (9623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:59,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3492 states to 3492 states and 9623 transitions. [2021-06-05 07:28:59,327 INFO L78 Accepts]: Start accepts. Automaton has 3492 states and 9623 transitions. Word has length 57 [2021-06-05 07:28:59,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:28:59,327 INFO L482 AbstractCegarLoop]: Abstraction has 3492 states and 9623 transitions. [2021-06-05 07:28:59,328 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:28:59,328 INFO L276 IsEmpty]: Start isEmpty. Operand 3492 states and 9623 transitions. [2021-06-05 07:28:59,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-05 07:28:59,332 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:28:59,333 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, 1, 1] [2021-06-05 07:28:59,556 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-06-05 07:28:59,557 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:28:59,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:28:59,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1016003256, now seen corresponding path program 6 times [2021-06-05 07:28:59,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:28:59,557 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112698214] [2021-06-05 07:28:59,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:28:59,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:28:59,640 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 07:28:59,641 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:28:59,641 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112698214] [2021-06-05 07:28:59,641 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112698214] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:59,641 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358979200] [2021-06-05 07:28:59,641 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 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 07:28:59,720 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 07:28:59,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:28:59,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 07:28:59,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:28:59,882 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 07:28:59,882 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358979200] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:28:59,882 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:28:59,882 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 07:28:59,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403910529] [2021-06-05 07:28:59,883 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:28:59,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:28:59,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:28:59,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:28:59,884 INFO L87 Difference]: Start difference. First operand 3492 states and 9623 transitions. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:00,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:29:00,144 INFO L93 Difference]: Finished difference Result 5019 states and 13181 transitions. [2021-06-05 07:29:00,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 07:29:00,145 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-06-05 07:29:00,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:29:00,151 INFO L225 Difference]: With dead ends: 5019 [2021-06-05 07:29:00,151 INFO L226 Difference]: Without dead ends: 4867 [2021-06-05 07:29:00,152 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 268.6ms TimeCoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2021-06-05 07:29:00,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4867 states. [2021-06-05 07:29:00,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4867 to 3557. [2021-06-05 07:29:00,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3557 states, 3556 states have (on average 2.7455005624296964) internal successors, (9763), 3556 states have internal predecessors, (9763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:00,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3557 states to 3557 states and 9763 transitions. [2021-06-05 07:29:00,216 INFO L78 Accepts]: Start accepts. Automaton has 3557 states and 9763 transitions. Word has length 57 [2021-06-05 07:29:00,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:29:00,216 INFO L482 AbstractCegarLoop]: Abstraction has 3557 states and 9763 transitions. [2021-06-05 07:29:00,216 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:00,216 INFO L276 IsEmpty]: Start isEmpty. Operand 3557 states and 9763 transitions. [2021-06-05 07:29:00,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-05 07:29:00,220 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:29:00,220 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, 1, 1] [2021-06-05 07:29:00,420 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-06-05 07:29:00,421 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:29:00,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:29:00,421 INFO L82 PathProgramCache]: Analyzing trace with hash -542675038, now seen corresponding path program 7 times [2021-06-05 07:29:00,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:29:00,421 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776473083] [2021-06-05 07:29:00,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:29:00,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:29:00,506 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 07:29:00,506 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:29:00,506 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776473083] [2021-06-05 07:29:00,506 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776473083] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:00,507 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431499938] [2021-06-05 07:29:00,507 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 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 07:29:00,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:29:00,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 07:29:00,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:29:00,741 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 07:29:00,741 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431499938] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:00,741 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:29:00,741 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 07:29:00,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885155867] [2021-06-05 07:29:00,742 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:29:00,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:29:00,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:29:00,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:29:00,743 INFO L87 Difference]: Start difference. First operand 3557 states and 9763 transitions. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:00,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:29:00,984 INFO L93 Difference]: Finished difference Result 4869 states and 12883 transitions. [2021-06-05 07:29:00,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 07:29:00,985 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-06-05 07:29:00,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:29:00,992 INFO L225 Difference]: With dead ends: 4869 [2021-06-05 07:29:00,992 INFO L226 Difference]: Without dead ends: 4717 [2021-06-05 07:29:00,993 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 235.9ms TimeCoverageRelationStatistics Valid=184, Invalid=518, Unknown=0, NotChecked=0, Total=702 [2021-06-05 07:29:01,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4717 states. [2021-06-05 07:29:01,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4717 to 3522. [2021-06-05 07:29:01,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3522 states, 3521 states have (on average 2.750923033229196) internal successors, (9686), 3521 states have internal predecessors, (9686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:01,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3522 states to 3522 states and 9686 transitions. [2021-06-05 07:29:01,057 INFO L78 Accepts]: Start accepts. Automaton has 3522 states and 9686 transitions. Word has length 57 [2021-06-05 07:29:01,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:29:01,057 INFO L482 AbstractCegarLoop]: Abstraction has 3522 states and 9686 transitions. [2021-06-05 07:29:01,057 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:01,057 INFO L276 IsEmpty]: Start isEmpty. Operand 3522 states and 9686 transitions. [2021-06-05 07:29:01,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-05 07:29:01,062 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:29:01,062 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, 1, 1] [2021-06-05 07:29:01,276 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-06-05 07:29:01,277 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:29:01,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:29:01,277 INFO L82 PathProgramCache]: Analyzing trace with hash 509542868, now seen corresponding path program 8 times [2021-06-05 07:29:01,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:29:01,277 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660693493] [2021-06-05 07:29:01,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:29:01,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:29:01,387 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 07:29:01,387 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:29:01,387 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660693493] [2021-06-05 07:29:01,387 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660693493] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:01,387 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500543675] [2021-06-05 07:29:01,387 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 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 07:29:01,438 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:29:01,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:29:01,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 07:29:01,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:29:01,616 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 07:29:01,616 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500543675] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:01,616 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:29:01,616 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 07:29:01,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225216661] [2021-06-05 07:29:01,617 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:29:01,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:29:01,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:29:01,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:29:01,617 INFO L87 Difference]: Start difference. First operand 3522 states and 9686 transitions. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:01,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:29:01,857 INFO L93 Difference]: Finished difference Result 5051 states and 13245 transitions. [2021-06-05 07:29:01,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 07:29:01,857 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-06-05 07:29:01,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:29:01,862 INFO L225 Difference]: With dead ends: 5051 [2021-06-05 07:29:01,862 INFO L226 Difference]: Without dead ends: 4899 [2021-06-05 07:29:01,862 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 294.0ms TimeCoverageRelationStatistics Valid=223, Invalid=647, Unknown=0, NotChecked=0, Total=870 [2021-06-05 07:29:01,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4899 states. [2021-06-05 07:29:01,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4899 to 3627. [2021-06-05 07:29:01,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3627 states, 3626 states have (on average 2.7349696635410923) internal successors, (9917), 3626 states have internal predecessors, (9917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:01,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3627 states to 3627 states and 9917 transitions. [2021-06-05 07:29:01,916 INFO L78 Accepts]: Start accepts. Automaton has 3627 states and 9917 transitions. Word has length 57 [2021-06-05 07:29:01,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:29:01,917 INFO L482 AbstractCegarLoop]: Abstraction has 3627 states and 9917 transitions. [2021-06-05 07:29:01,917 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:01,917 INFO L276 IsEmpty]: Start isEmpty. Operand 3627 states and 9917 transitions. [2021-06-05 07:29:01,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-05 07:29:01,920 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:29:01,920 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, 1, 1] [2021-06-05 07:29:02,136 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-06-05 07:29:02,137 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:29:02,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:29:02,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1535792180, now seen corresponding path program 9 times [2021-06-05 07:29:02,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:29:02,137 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299447514] [2021-06-05 07:29:02,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:29:02,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:29:02,214 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 07:29:02,215 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:29:02,215 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299447514] [2021-06-05 07:29:02,215 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299447514] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:02,215 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830828830] [2021-06-05 07:29:02,215 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 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 07:29:02,283 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 07:29:02,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:29:02,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 07:29:02,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:29:02,443 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 07:29:02,443 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830828830] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:02,443 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:29:02,443 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 07:29:02,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262052217] [2021-06-05 07:29:02,444 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:29:02,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:29:02,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:29:02,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:29:02,446 INFO L87 Difference]: Start difference. First operand 3627 states and 9917 transitions. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:02,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:29:02,728 INFO L93 Difference]: Finished difference Result 5155 states and 13453 transitions. [2021-06-05 07:29:02,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 07:29:02,728 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-06-05 07:29:02,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:29:02,733 INFO L225 Difference]: With dead ends: 5155 [2021-06-05 07:29:02,733 INFO L226 Difference]: Without dead ends: 5003 [2021-06-05 07:29:02,733 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 298.0ms TimeCoverageRelationStatistics Valid=258, Invalid=734, Unknown=0, NotChecked=0, Total=992 [2021-06-05 07:29:02,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5003 states. [2021-06-05 07:29:02,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5003 to 3611. [2021-06-05 07:29:02,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3611 states, 3610 states have (on average 2.735180055401662) internal successors, (9874), 3610 states have internal predecessors, (9874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:02,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3611 states to 3611 states and 9874 transitions. [2021-06-05 07:29:02,819 INFO L78 Accepts]: Start accepts. Automaton has 3611 states and 9874 transitions. Word has length 57 [2021-06-05 07:29:02,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:29:02,819 INFO L482 AbstractCegarLoop]: Abstraction has 3611 states and 9874 transitions. [2021-06-05 07:29:02,819 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:02,819 INFO L276 IsEmpty]: Start isEmpty. Operand 3611 states and 9874 transitions. [2021-06-05 07:29:02,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-05 07:29:02,824 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:29:02,824 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, 1, 1] [2021-06-05 07:29:03,046 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-06-05 07:29:03,046 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:29:03,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:29:03,046 INFO L82 PathProgramCache]: Analyzing trace with hash -723248218, now seen corresponding path program 10 times [2021-06-05 07:29:03,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:29:03,047 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298465347] [2021-06-05 07:29:03,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:29:03,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:29:03,129 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 07:29:03,130 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:29:03,130 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298465347] [2021-06-05 07:29:03,130 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298465347] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:03,130 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508181904] [2021-06-05 07:29:03,130 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 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 07:29:03,179 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:29:03,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:29:03,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 07:29:03,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:29:03,351 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 07:29:03,351 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508181904] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:03,351 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:29:03,351 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 07:29:03,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344975439] [2021-06-05 07:29:03,352 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:29:03,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:29:03,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:29:03,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:29:03,352 INFO L87 Difference]: Start difference. First operand 3611 states and 9874 transitions. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:03,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:29:03,652 INFO L93 Difference]: Finished difference Result 5139 states and 13421 transitions. [2021-06-05 07:29:03,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-05 07:29:03,652 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-06-05 07:29:03,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:29:03,657 INFO L225 Difference]: With dead ends: 5139 [2021-06-05 07:29:03,657 INFO L226 Difference]: Without dead ends: 4987 [2021-06-05 07:29:03,658 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 301.6ms TimeCoverageRelationStatistics Valid=247, Invalid=683, Unknown=0, NotChecked=0, Total=930 [2021-06-05 07:29:03,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4987 states. [2021-06-05 07:29:03,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4987 to 3556. [2021-06-05 07:29:03,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3556 states, 3555 states have (on average 2.7443037974683544) internal successors, (9756), 3555 states have internal predecessors, (9756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:03,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3556 states to 3556 states and 9756 transitions. [2021-06-05 07:29:03,728 INFO L78 Accepts]: Start accepts. Automaton has 3556 states and 9756 transitions. Word has length 57 [2021-06-05 07:29:03,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:29:03,728 INFO L482 AbstractCegarLoop]: Abstraction has 3556 states and 9756 transitions. [2021-06-05 07:29:03,728 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:03,728 INFO L276 IsEmpty]: Start isEmpty. Operand 3556 states and 9756 transitions. [2021-06-05 07:29:03,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-05 07:29:03,734 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:29:03,734 INFO L521 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2021-06-05 07:29:03,948 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:29:03,949 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:29:03,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:29:03,949 INFO L82 PathProgramCache]: Analyzing trace with hash 891212980, now seen corresponding path program 13 times [2021-06-05 07:29:03,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:29:03,949 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408347525] [2021-06-05 07:29:03,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:29:03,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:29:04,030 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:29:04,030 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:29:04,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408347525] [2021-06-05 07:29:04,031 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408347525] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:04,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126606549] [2021-06-05 07:29:04,031 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 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 07:29:04,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:29:04,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 07:29:04,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:29:04,252 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:29:04,252 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126606549] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:04,252 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:29:04,253 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 07:29:04,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569673876] [2021-06-05 07:29:04,253 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:29:04,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:29:04,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:29:04,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:29:04,254 INFO L87 Difference]: Start difference. First operand 3556 states and 9756 transitions. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:04,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:29:04,440 INFO L93 Difference]: Finished difference Result 4988 states and 13124 transitions. [2021-06-05 07:29:04,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 07:29:04,441 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-06-05 07:29:04,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:29:04,446 INFO L225 Difference]: With dead ends: 4988 [2021-06-05 07:29:04,446 INFO L226 Difference]: Without dead ends: 4836 [2021-06-05 07:29:04,446 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 188.2ms TimeCoverageRelationStatistics Valid=167, Invalid=433, Unknown=0, NotChecked=0, Total=600 [2021-06-05 07:29:04,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4836 states. [2021-06-05 07:29:04,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4836 to 3606. [2021-06-05 07:29:04,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3606 states, 3605 states have (on average 2.736754507628294) internal successors, (9866), 3605 states have internal predecessors, (9866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:04,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3606 states to 3606 states and 9866 transitions. [2021-06-05 07:29:04,523 INFO L78 Accepts]: Start accepts. Automaton has 3606 states and 9866 transitions. Word has length 57 [2021-06-05 07:29:04,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:29:04,523 INFO L482 AbstractCegarLoop]: Abstraction has 3606 states and 9866 transitions. [2021-06-05 07:29:04,523 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:04,523 INFO L276 IsEmpty]: Start isEmpty. Operand 3606 states and 9866 transitions. [2021-06-05 07:29:04,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-05 07:29:04,528 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:29:04,528 INFO L521 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2021-06-05 07:29:04,746 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2021-06-05 07:29:04,747 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:29:04,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:29:04,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1553085624, now seen corresponding path program 14 times [2021-06-05 07:29:04,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:29:04,747 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956092334] [2021-06-05 07:29:04,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:29:04,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:29:04,849 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:29:04,849 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:29:04,849 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956092334] [2021-06-05 07:29:04,849 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956092334] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:04,849 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772103146] [2021-06-05 07:29:04,849 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 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 07:29:04,899 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:29:04,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:29:04,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 07:29:04,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:29:05,089 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:29:05,090 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772103146] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:05,090 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:29:05,090 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 07:29:05,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174529307] [2021-06-05 07:29:05,090 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:29:05,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:29:05,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:29:05,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:29:05,091 INFO L87 Difference]: Start difference. First operand 3606 states and 9866 transitions. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:05,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:29:05,326 INFO L93 Difference]: Finished difference Result 5229 states and 13611 transitions. [2021-06-05 07:29:05,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 07:29:05,326 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-06-05 07:29:05,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:29:05,331 INFO L225 Difference]: With dead ends: 5229 [2021-06-05 07:29:05,332 INFO L226 Difference]: Without dead ends: 5077 [2021-06-05 07:29:05,332 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 265.4ms TimeCoverageRelationStatistics Valid=207, Invalid=549, Unknown=0, NotChecked=0, Total=756 [2021-06-05 07:29:05,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5077 states. [2021-06-05 07:29:05,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5077 to 3606. [2021-06-05 07:29:05,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3606 states, 3605 states have (on average 2.736754507628294) internal successors, (9866), 3605 states have internal predecessors, (9866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:05,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3606 states to 3606 states and 9866 transitions. [2021-06-05 07:29:05,380 INFO L78 Accepts]: Start accepts. Automaton has 3606 states and 9866 transitions. Word has length 57 [2021-06-05 07:29:05,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:29:05,380 INFO L482 AbstractCegarLoop]: Abstraction has 3606 states and 9866 transitions. [2021-06-05 07:29:05,380 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:05,380 INFO L276 IsEmpty]: Start isEmpty. Operand 3606 states and 9866 transitions. [2021-06-05 07:29:05,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-05 07:29:05,385 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:29:05,385 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, 1, 1] [2021-06-05 07:29:05,596 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:29:05,597 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:29:05,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:29:05,597 INFO L82 PathProgramCache]: Analyzing trace with hash 880748348, now seen corresponding path program 11 times [2021-06-05 07:29:05,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:29:05,597 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303654450] [2021-06-05 07:29:05,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:29:05,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:29:05,662 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 07:29:05,662 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:29:05,662 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303654450] [2021-06-05 07:29:05,662 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303654450] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:05,662 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650033376] [2021-06-05 07:29:05,662 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 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 07:29:05,707 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 07:29:05,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:29:05,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 07:29:05,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:29:05,855 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 07:29:05,856 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650033376] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:05,856 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:29:05,856 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 07:29:05,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925380333] [2021-06-05 07:29:05,856 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:29:05,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:29:05,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:29:05,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:29:05,857 INFO L87 Difference]: Start difference. First operand 3606 states and 9866 transitions. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:06,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:29:06,131 INFO L93 Difference]: Finished difference Result 5364 states and 13876 transitions. [2021-06-05 07:29:06,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 07:29:06,132 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-06-05 07:29:06,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:29:06,139 INFO L225 Difference]: With dead ends: 5364 [2021-06-05 07:29:06,139 INFO L226 Difference]: Without dead ends: 5212 [2021-06-05 07:29:06,139 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 270.8ms TimeCoverageRelationStatistics Valid=243, Invalid=687, Unknown=0, NotChecked=0, Total=930 [2021-06-05 07:29:06,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5212 states. [2021-06-05 07:29:06,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5212 to 3606. [2021-06-05 07:29:06,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3606 states, 3605 states have (on average 2.736754507628294) internal successors, (9866), 3605 states have internal predecessors, (9866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:06,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3606 states to 3606 states and 9866 transitions. [2021-06-05 07:29:06,207 INFO L78 Accepts]: Start accepts. Automaton has 3606 states and 9866 transitions. Word has length 57 [2021-06-05 07:29:06,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:29:06,207 INFO L482 AbstractCegarLoop]: Abstraction has 3606 states and 9866 transitions. [2021-06-05 07:29:06,207 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:06,207 INFO L276 IsEmpty]: Start isEmpty. Operand 3606 states and 9866 transitions. [2021-06-05 07:29:06,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-05 07:29:06,212 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:29:06,213 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, 1, 1] [2021-06-05 07:29:06,424 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2021-06-05 07:29:06,425 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:29:06,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:29:06,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1354076566, now seen corresponding path program 12 times [2021-06-05 07:29:06,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:29:06,425 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989018006] [2021-06-05 07:29:06,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:29:06,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:29:06,521 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 07:29:06,521 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:29:06,521 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989018006] [2021-06-05 07:29:06,521 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989018006] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:06,521 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058407467] [2021-06-05 07:29:06,521 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 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 07:29:06,593 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 07:29:06,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:29:06,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 07:29:06,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:29:06,769 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 07:29:06,769 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058407467] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:06,769 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:29:06,770 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 07:29:06,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679767247] [2021-06-05 07:29:06,770 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:29:06,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:29:06,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:29:06,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:29:06,770 INFO L87 Difference]: Start difference. First operand 3606 states and 9866 transitions. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:06,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:29:06,992 INFO L93 Difference]: Finished difference Result 5139 states and 13421 transitions. [2021-06-05 07:29:06,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 07:29:06,992 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-06-05 07:29:06,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:29:06,997 INFO L225 Difference]: With dead ends: 5139 [2021-06-05 07:29:06,998 INFO L226 Difference]: Without dead ends: 4987 [2021-06-05 07:29:06,998 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 238.3ms TimeCoverageRelationStatistics Valid=204, Invalid=608, Unknown=0, NotChecked=0, Total=812 [2021-06-05 07:29:07,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4987 states. [2021-06-05 07:29:07,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4987 to 3531. [2021-06-05 07:29:07,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3531 states, 3530 states have (on average 2.7481586402266287) internal successors, (9701), 3530 states have internal predecessors, (9701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:07,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3531 states to 3531 states and 9701 transitions. [2021-06-05 07:29:07,048 INFO L78 Accepts]: Start accepts. Automaton has 3531 states and 9701 transitions. Word has length 57 [2021-06-05 07:29:07,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:29:07,048 INFO L482 AbstractCegarLoop]: Abstraction has 3531 states and 9701 transitions. [2021-06-05 07:29:07,048 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:07,048 INFO L276 IsEmpty]: Start isEmpty. Operand 3531 states and 9701 transitions. [2021-06-05 07:29:07,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-05 07:29:07,053 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:29:07,053 INFO L521 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2021-06-05 07:29:07,268 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:29:07,269 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:29:07,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:29:07,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1028549134, now seen corresponding path program 15 times [2021-06-05 07:29:07,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:29:07,269 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582025001] [2021-06-05 07:29:07,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:29:07,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:29:07,343 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:29:07,343 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:29:07,343 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582025001] [2021-06-05 07:29:07,343 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582025001] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:07,344 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996615097] [2021-06-05 07:29:07,344 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 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 07:29:07,424 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 07:29:07,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:29:07,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 07:29:07,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:29:07,581 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:29:07,581 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996615097] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:07,581 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:29:07,581 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 07:29:07,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917610109] [2021-06-05 07:29:07,582 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:29:07,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:29:07,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:29:07,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:29:07,582 INFO L87 Difference]: Start difference. First operand 3531 states and 9701 transitions. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:07,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:29:07,764 INFO L93 Difference]: Finished difference Result 5043 states and 13259 transitions. [2021-06-05 07:29:07,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 07:29:07,765 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-06-05 07:29:07,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:29:07,770 INFO L225 Difference]: With dead ends: 5043 [2021-06-05 07:29:07,770 INFO L226 Difference]: Without dead ends: 4891 [2021-06-05 07:29:07,770 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 193.4ms TimeCoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2021-06-05 07:29:07,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4891 states. [2021-06-05 07:29:07,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4891 to 3556. [2021-06-05 07:29:07,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3556 states, 3555 states have (on average 2.7443037974683544) internal successors, (9756), 3555 states have internal predecessors, (9756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:07,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3556 states to 3556 states and 9756 transitions. [2021-06-05 07:29:07,820 INFO L78 Accepts]: Start accepts. Automaton has 3556 states and 9756 transitions. Word has length 57 [2021-06-05 07:29:07,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:29:07,821 INFO L482 AbstractCegarLoop]: Abstraction has 3556 states and 9756 transitions. [2021-06-05 07:29:07,821 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:07,821 INFO L276 IsEmpty]: Start isEmpty. Operand 3556 states and 9756 transitions. [2021-06-05 07:29:07,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-05 07:29:07,823 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:29:07,823 INFO L521 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2021-06-05 07:29:08,024 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-06-05 07:29:08,024 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:29:08,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:29:08,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1415749470, now seen corresponding path program 16 times [2021-06-05 07:29:08,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:29:08,025 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526887294] [2021-06-05 07:29:08,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:29:08,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:29:08,095 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:29:08,095 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:29:08,095 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526887294] [2021-06-05 07:29:08,095 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526887294] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:08,095 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579263779] [2021-06-05 07:29:08,095 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 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 07:29:08,165 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:29:08,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:29:08,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 07:29:08,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:29:08,365 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:29:08,365 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579263779] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:08,365 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:29:08,366 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 07:29:08,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459067638] [2021-06-05 07:29:08,366 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:29:08,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:29:08,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:29:08,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:29:08,367 INFO L87 Difference]: Start difference. First operand 3556 states and 9756 transitions. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:08,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:29:08,593 INFO L93 Difference]: Finished difference Result 5259 states and 13691 transitions. [2021-06-05 07:29:08,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 07:29:08,594 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-06-05 07:29:08,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:29:08,600 INFO L225 Difference]: With dead ends: 5259 [2021-06-05 07:29:08,600 INFO L226 Difference]: Without dead ends: 5107 [2021-06-05 07:29:08,600 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 235.6ms TimeCoverageRelationStatistics Valid=218, Invalid=594, Unknown=0, NotChecked=0, Total=812 [2021-06-05 07:29:08,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5107 states. [2021-06-05 07:29:08,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5107 to 3556. [2021-06-05 07:29:08,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3556 states, 3555 states have (on average 2.7443037974683544) internal successors, (9756), 3555 states have internal predecessors, (9756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:08,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3556 states to 3556 states and 9756 transitions. [2021-06-05 07:29:08,649 INFO L78 Accepts]: Start accepts. Automaton has 3556 states and 9756 transitions. Word has length 57 [2021-06-05 07:29:08,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:29:08,649 INFO L482 AbstractCegarLoop]: Abstraction has 3556 states and 9756 transitions. [2021-06-05 07:29:08,649 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:08,649 INFO L276 IsEmpty]: Start isEmpty. Operand 3556 states and 9756 transitions. [2021-06-05 07:29:08,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-05 07:29:08,652 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:29:08,653 INFO L521 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2021-06-05 07:29:08,856 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:29:08,857 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:29:08,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:29:08,857 INFO L82 PathProgramCache]: Analyzing trace with hash 955868276, now seen corresponding path program 17 times [2021-06-05 07:29:08,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:29:08,857 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468293898] [2021-06-05 07:29:08,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:29:08,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:29:08,929 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:29:08,930 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:29:08,930 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468293898] [2021-06-05 07:29:08,930 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468293898] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:08,930 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012892180] [2021-06-05 07:29:08,930 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 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 07:29:08,981 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 07:29:08,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:29:08,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 07:29:08,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:29:09,126 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:29:09,126 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012892180] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:09,126 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:29:09,126 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 07:29:09,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931982530] [2021-06-05 07:29:09,126 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:29:09,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:29:09,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:29:09,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:29:09,127 INFO L87 Difference]: Start difference. First operand 3556 states and 9756 transitions. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:09,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:29:09,300 INFO L93 Difference]: Finished difference Result 5028 states and 13234 transitions. [2021-06-05 07:29:09,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 07:29:09,300 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-06-05 07:29:09,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:29:09,305 INFO L225 Difference]: With dead ends: 5028 [2021-06-05 07:29:09,305 INFO L226 Difference]: Without dead ends: 4876 [2021-06-05 07:29:09,306 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 200.6ms TimeCoverageRelationStatistics Valid=199, Invalid=503, Unknown=0, NotChecked=0, Total=702 [2021-06-05 07:29:09,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4876 states. [2021-06-05 07:29:09,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4876 to 3531. [2021-06-05 07:29:09,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3531 states, 3530 states have (on average 2.7481586402266287) internal successors, (9701), 3530 states have internal predecessors, (9701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:09,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3531 states to 3531 states and 9701 transitions. [2021-06-05 07:29:09,357 INFO L78 Accepts]: Start accepts. Automaton has 3531 states and 9701 transitions. Word has length 57 [2021-06-05 07:29:09,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:29:09,357 INFO L482 AbstractCegarLoop]: Abstraction has 3531 states and 9701 transitions. [2021-06-05 07:29:09,357 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:09,357 INFO L276 IsEmpty]: Start isEmpty. Operand 3531 states and 9701 transitions. [2021-06-05 07:29:09,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-05 07:29:09,361 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:29:09,361 INFO L521 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2021-06-05 07:29:09,576 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-06-05 07:29:09,577 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:29:09,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:29:09,577 INFO L82 PathProgramCache]: Analyzing trace with hash -884485368, now seen corresponding path program 18 times [2021-06-05 07:29:09,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:29:09,577 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824872379] [2021-06-05 07:29:09,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:29:09,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:29:09,659 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:29:09,659 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:29:09,660 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824872379] [2021-06-05 07:29:09,660 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824872379] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:09,660 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659690679] [2021-06-05 07:29:09,660 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 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 07:29:09,714 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 07:29:09,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:29:09,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 13 conjunts are in the unsatisfiable core [2021-06-05 07:29:09,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:29:10,239 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:29:10,239 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659690679] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:10,239 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:29:10,239 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 07:29:10,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557588327] [2021-06-05 07:29:10,240 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:29:10,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:29:10,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:29:10,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:29:10,240 INFO L87 Difference]: Start difference. First operand 3531 states and 9701 transitions. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:10,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:29:10,630 INFO L93 Difference]: Finished difference Result 6802 states and 18261 transitions. [2021-06-05 07:29:10,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 07:29:10,631 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-06-05 07:29:10,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:29:10,638 INFO L225 Difference]: With dead ends: 6802 [2021-06-05 07:29:10,638 INFO L226 Difference]: Without dead ends: 6420 [2021-06-05 07:29:10,638 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 535.4ms TimeCoverageRelationStatistics Valid=343, Invalid=989, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 07:29:10,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6420 states. [2021-06-05 07:29:10,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6420 to 3531. [2021-06-05 07:29:10,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3531 states, 3530 states have (on average 2.7481586402266287) internal successors, (9701), 3530 states have internal predecessors, (9701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:10,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3531 states to 3531 states and 9701 transitions. [2021-06-05 07:29:10,683 INFO L78 Accepts]: Start accepts. Automaton has 3531 states and 9701 transitions. Word has length 57 [2021-06-05 07:29:10,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:29:10,683 INFO L482 AbstractCegarLoop]: Abstraction has 3531 states and 9701 transitions. [2021-06-05 07:29:10,683 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:10,683 INFO L276 IsEmpty]: Start isEmpty. Operand 3531 states and 9701 transitions. [2021-06-05 07:29:10,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-05 07:29:10,685 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:29:10,686 INFO L521 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2021-06-05 07:29:10,887 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:29:10,887 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:29:10,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:29:10,888 INFO L82 PathProgramCache]: Analyzing trace with hash 196144782, now seen corresponding path program 19 times [2021-06-05 07:29:10,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:29:10,888 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40224120] [2021-06-05 07:29:10,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:29:10,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:29:10,955 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:29:10,955 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:29:10,955 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40224120] [2021-06-05 07:29:10,955 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40224120] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:10,955 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907627583] [2021-06-05 07:29:10,955 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 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 07:29:11,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:29:11,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 07:29:11,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:29:11,200 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:29:11,201 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907627583] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:11,201 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:29:11,201 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 07:29:11,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113505025] [2021-06-05 07:29:11,201 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:29:11,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:29:11,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:29:11,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:29:11,202 INFO L87 Difference]: Start difference. First operand 3531 states and 9701 transitions. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:11,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:29:11,597 INFO L93 Difference]: Finished difference Result 6221 states and 16557 transitions. [2021-06-05 07:29:11,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 07:29:11,597 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-06-05 07:29:11,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:29:11,604 INFO L225 Difference]: With dead ends: 6221 [2021-06-05 07:29:11,605 INFO L226 Difference]: Without dead ends: 6069 [2021-06-05 07:29:11,605 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 371.2ms TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 07:29:11,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6069 states. [2021-06-05 07:29:11,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6069 to 3846. [2021-06-05 07:29:11,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3846 states, 3845 states have (on average 2.7843953185955788) internal successors, (10706), 3845 states have internal predecessors, (10706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:11,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3846 states to 3846 states and 10706 transitions. [2021-06-05 07:29:11,668 INFO L78 Accepts]: Start accepts. Automaton has 3846 states and 10706 transitions. Word has length 57 [2021-06-05 07:29:11,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:29:11,668 INFO L482 AbstractCegarLoop]: Abstraction has 3846 states and 10706 transitions. [2021-06-05 07:29:11,668 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:11,668 INFO L276 IsEmpty]: Start isEmpty. Operand 3846 states and 10706 transitions. [2021-06-05 07:29:11,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-05 07:29:11,671 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:29:11,671 INFO L521 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2021-06-05 07:29:11,872 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,32 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:29:11,872 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:29:11,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:29:11,872 INFO L82 PathProgramCache]: Analyzing trace with hash 651669236, now seen corresponding path program 20 times [2021-06-05 07:29:11,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:29:11,872 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703753569] [2021-06-05 07:29:11,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:29:11,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:29:11,984 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:29:11,984 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:29:11,984 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703753569] [2021-06-05 07:29:11,984 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703753569] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:11,984 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652398167] [2021-06-05 07:29:11,984 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 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 07:29:12,033 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:29:12,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:29:12,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 07:29:12,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:29:12,226 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 07:29:12,226 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652398167] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:12,226 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:29:12,226 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 07:29:12,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508842054] [2021-06-05 07:29:12,227 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:29:12,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:29:12,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:29:12,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:29:12,227 INFO L87 Difference]: Start difference. First operand 3846 states and 10706 transitions. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:12,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:29:12,752 INFO L93 Difference]: Finished difference Result 7895 states and 21363 transitions. [2021-06-05 07:29:12,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 07:29:12,752 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-06-05 07:29:12,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:29:12,761 INFO L225 Difference]: With dead ends: 7895 [2021-06-05 07:29:12,761 INFO L226 Difference]: Without dead ends: 7334 [2021-06-05 07:29:12,761 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 592 ImplicationChecksByTransitivity, 522.2ms TimeCoverageRelationStatistics Valid=503, Invalid=1567, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 07:29:12,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7334 states. [2021-06-05 07:29:12,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7334 to 3626. [2021-06-05 07:29:12,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3626 states, 3625 states have (on average 2.763034482758621) internal successors, (10016), 3625 states have internal predecessors, (10016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:12,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3626 states to 3626 states and 10016 transitions. [2021-06-05 07:29:12,825 INFO L78 Accepts]: Start accepts. Automaton has 3626 states and 10016 transitions. Word has length 57 [2021-06-05 07:29:12,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:29:12,825 INFO L482 AbstractCegarLoop]: Abstraction has 3626 states and 10016 transitions. [2021-06-05 07:29:12,825 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:12,825 INFO L276 IsEmpty]: Start isEmpty. Operand 3626 states and 10016 transitions. [2021-06-05 07:29:12,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-05 07:29:12,829 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:29:12,829 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, 1, 1] [2021-06-05 07:29:13,033 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2021-06-05 07:29:13,034 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:29:13,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:29:13,034 INFO L82 PathProgramCache]: Analyzing trace with hash 374566096, now seen corresponding path program 13 times [2021-06-05 07:29:13,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:29:13,035 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090725345] [2021-06-05 07:29:13,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:29:13,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:29:13,122 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 07:29:13,122 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:29:13,122 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090725345] [2021-06-05 07:29:13,122 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090725345] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:13,122 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255016913] [2021-06-05 07:29:13,122 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 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 07:29:13,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:29:13,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 07:29:13,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:29:13,342 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 07:29:13,343 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255016913] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:13,343 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:29:13,343 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 07:29:13,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987831854] [2021-06-05 07:29:13,343 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:29:13,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:29:13,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:29:13,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:29:13,344 INFO L87 Difference]: Start difference. First operand 3626 states and 10016 transitions. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:13,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:29:13,742 INFO L93 Difference]: Finished difference Result 6190 states and 16183 transitions. [2021-06-05 07:29:13,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 07:29:13,742 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-06-05 07:29:13,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:29:13,748 INFO L225 Difference]: With dead ends: 6190 [2021-06-05 07:29:13,748 INFO L226 Difference]: Without dead ends: 6038 [2021-06-05 07:29:13,749 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 367.9ms TimeCoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 07:29:13,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6038 states. [2021-06-05 07:29:13,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6038 to 3991. [2021-06-05 07:29:13,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3991 states, 3990 states have (on average 2.7897243107769425) internal successors, (11131), 3990 states have internal predecessors, (11131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:13,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3991 states to 3991 states and 11131 transitions. [2021-06-05 07:29:13,816 INFO L78 Accepts]: Start accepts. Automaton has 3991 states and 11131 transitions. Word has length 57 [2021-06-05 07:29:13,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:29:13,817 INFO L482 AbstractCegarLoop]: Abstraction has 3991 states and 11131 transitions. [2021-06-05 07:29:13,817 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:13,817 INFO L276 IsEmpty]: Start isEmpty. Operand 3991 states and 11131 transitions. [2021-06-05 07:29:13,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-05 07:29:13,821 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:29:13,822 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, 1, 1] [2021-06-05 07:29:14,024 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:29:14,025 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:29:14,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:29:14,025 INFO L82 PathProgramCache]: Analyzing trace with hash -2011458500, now seen corresponding path program 14 times [2021-06-05 07:29:14,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:29:14,025 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883289163] [2021-06-05 07:29:14,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:29:14,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:29:14,104 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 07:29:14,104 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:29:14,104 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883289163] [2021-06-05 07:29:14,104 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883289163] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:14,105 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757901231] [2021-06-05 07:29:14,105 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 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 07:29:14,160 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:29:14,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:29:14,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 07:29:14,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:29:14,337 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 07:29:14,337 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1757901231] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:14,337 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:29:14,337 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 07:29:14,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115459676] [2021-06-05 07:29:14,338 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:29:14,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:29:14,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:29:14,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:29:14,338 INFO L87 Difference]: Start difference. First operand 3991 states and 11131 transitions. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:14,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:29:14,710 INFO L93 Difference]: Finished difference Result 6467 states and 17327 transitions. [2021-06-05 07:29:14,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 07:29:14,711 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-06-05 07:29:14,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:29:14,720 INFO L225 Difference]: With dead ends: 6467 [2021-06-05 07:29:14,720 INFO L226 Difference]: Without dead ends: 6315 [2021-06-05 07:29:14,721 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 363.4ms TimeCoverageRelationStatistics Valid=332, Invalid=1000, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 07:29:14,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6315 states. [2021-06-05 07:29:14,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6315 to 4136. [2021-06-05 07:29:14,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4136 states, 4135 states have (on average 2.8176541717049575) internal successors, (11651), 4135 states have internal predecessors, (11651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:14,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4136 states to 4136 states and 11651 transitions. [2021-06-05 07:29:14,798 INFO L78 Accepts]: Start accepts. Automaton has 4136 states and 11651 transitions. Word has length 57 [2021-06-05 07:29:14,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:29:14,799 INFO L482 AbstractCegarLoop]: Abstraction has 4136 states and 11651 transitions. [2021-06-05 07:29:14,799 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:14,799 INFO L276 IsEmpty]: Start isEmpty. Operand 4136 states and 11651 transitions. [2021-06-05 07:29:14,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-05 07:29:14,804 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:29:14,804 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, 1, 1] [2021-06-05 07:29:15,020 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-06-05 07:29:15,021 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:29:15,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:29:15,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1208888960, now seen corresponding path program 15 times [2021-06-05 07:29:15,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:29:15,021 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136213974] [2021-06-05 07:29:15,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:29:15,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:29:15,098 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 07:29:15,099 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:29:15,099 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136213974] [2021-06-05 07:29:15,099 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136213974] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:15,099 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151278667] [2021-06-05 07:29:15,099 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 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 07:29:15,155 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 07:29:15,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:29:15,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 07:29:15,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:29:15,321 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 07:29:15,321 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151278667] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:15,321 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:29:15,321 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 07:29:15,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106572535] [2021-06-05 07:29:15,322 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 07:29:15,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:29:15,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 07:29:15,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2021-06-05 07:29:15,323 INFO L87 Difference]: Start difference. First operand 4136 states and 11651 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:16,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:29:16,017 INFO L93 Difference]: Finished difference Result 8535 states and 22890 transitions. [2021-06-05 07:29:16,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 07:29:16,017 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-06-05 07:29:16,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:29:16,027 INFO L225 Difference]: With dead ends: 8535 [2021-06-05 07:29:16,027 INFO L226 Difference]: Without dead ends: 7977 [2021-06-05 07:29:16,028 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 958 ImplicationChecksByTransitivity, 625.2ms TimeCoverageRelationStatistics Valid=681, Invalid=2399, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 07:29:16,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7977 states. [2021-06-05 07:29:16,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7977 to 3871. [2021-06-05 07:29:16,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3871 states, 3870 states have (on average 2.77312661498708) internal successors, (10732), 3870 states have internal predecessors, (10732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:16,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3871 states to 3871 states and 10732 transitions. [2021-06-05 07:29:16,088 INFO L78 Accepts]: Start accepts. Automaton has 3871 states and 10732 transitions. Word has length 57 [2021-06-05 07:29:16,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:29:16,088 INFO L482 AbstractCegarLoop]: Abstraction has 3871 states and 10732 transitions. [2021-06-05 07:29:16,088 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:16,089 INFO L276 IsEmpty]: Start isEmpty. Operand 3871 states and 10732 transitions. [2021-06-05 07:29:16,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-05 07:29:16,093 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:29:16,093 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, 1, 1] [2021-06-05 07:29:16,300 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:29:16,301 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:29:16,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:29:16,301 INFO L82 PathProgramCache]: Analyzing trace with hash -735082546, now seen corresponding path program 16 times [2021-06-05 07:29:16,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:29:16,301 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418985234] [2021-06-05 07:29:16,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:29:16,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:29:16,371 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 07:29:16,371 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:29:16,371 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418985234] [2021-06-05 07:29:16,372 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418985234] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:16,372 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796945660] [2021-06-05 07:29:16,372 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 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 07:29:16,417 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:29:16,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:29:16,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 07:29:16,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:29:16,597 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 07:29:16,597 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796945660] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:16,597 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:29:16,598 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 07:29:16,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900181422] [2021-06-05 07:29:16,598 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:29:16,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:29:16,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:29:16,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:29:16,599 INFO L87 Difference]: Start difference. First operand 3871 states and 10732 transitions. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:17,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:29:17,045 INFO L93 Difference]: Finished difference Result 6407 states and 16676 transitions. [2021-06-05 07:29:17,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 07:29:17,046 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-06-05 07:29:17,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:29:17,054 INFO L225 Difference]: With dead ends: 6407 [2021-06-05 07:29:17,054 INFO L226 Difference]: Without dead ends: 6255 [2021-06-05 07:29:17,055 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 403.2ms TimeCoverageRelationStatistics Valid=302, Invalid=1030, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 07:29:17,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6255 states. [2021-06-05 07:29:17,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6255 to 4091. [2021-06-05 07:29:17,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4091 states, 4090 states have (on average 2.7863080684596575) internal successors, (11396), 4090 states have internal predecessors, (11396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:17,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4091 states to 4091 states and 11396 transitions. [2021-06-05 07:29:17,133 INFO L78 Accepts]: Start accepts. Automaton has 4091 states and 11396 transitions. Word has length 57 [2021-06-05 07:29:17,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:29:17,134 INFO L482 AbstractCegarLoop]: Abstraction has 4091 states and 11396 transitions. [2021-06-05 07:29:17,134 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:17,134 INFO L276 IsEmpty]: Start isEmpty. Operand 4091 states and 11396 transitions. [2021-06-05 07:29:17,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-05 07:29:17,139 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:29:17,139 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, 1, 1] [2021-06-05 07:29:17,348 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-06-05 07:29:17,349 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:29:17,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:29:17,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1967873632, now seen corresponding path program 17 times [2021-06-05 07:29:17,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:29:17,349 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81179955] [2021-06-05 07:29:17,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:29:17,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:29:17,427 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 07:29:17,427 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:29:17,427 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81179955] [2021-06-05 07:29:17,427 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81179955] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:17,427 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887101081] [2021-06-05 07:29:17,427 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 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 07:29:17,480 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 07:29:17,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:29:17,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 07:29:17,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:29:17,650 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 07:29:17,651 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887101081] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:17,651 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:29:17,651 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 07:29:17,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181270122] [2021-06-05 07:29:17,652 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:29:17,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:29:17,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:29:17,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:29:17,653 INFO L87 Difference]: Start difference. First operand 4091 states and 11396 transitions. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:18,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:29:18,102 INFO L93 Difference]: Finished difference Result 6662 states and 17181 transitions. [2021-06-05 07:29:18,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 07:29:18,103 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-06-05 07:29:18,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:29:18,111 INFO L225 Difference]: With dead ends: 6662 [2021-06-05 07:29:18,111 INFO L226 Difference]: Without dead ends: 6510 [2021-06-05 07:29:18,112 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 427.0ms TimeCoverageRelationStatistics Valid=351, Invalid=1131, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 07:29:18,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6510 states. [2021-06-05 07:29:18,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6510 to 4144. [2021-06-05 07:29:18,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4144 states, 4143 states have (on average 2.7859039343470915) internal successors, (11542), 4143 states have internal predecessors, (11542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:18,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4144 states to 4144 states and 11542 transitions. [2021-06-05 07:29:18,183 INFO L78 Accepts]: Start accepts. Automaton has 4144 states and 11542 transitions. Word has length 57 [2021-06-05 07:29:18,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:29:18,184 INFO L482 AbstractCegarLoop]: Abstraction has 4144 states and 11542 transitions. [2021-06-05 07:29:18,184 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:18,184 INFO L276 IsEmpty]: Start isEmpty. Operand 4144 states and 11542 transitions. [2021-06-05 07:29:18,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-05 07:29:18,189 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:29:18,189 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, 1, 1] [2021-06-05 07:29:18,404 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-06-05 07:29:18,405 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:29:18,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:29:18,405 INFO L82 PathProgramCache]: Analyzing trace with hash -2068634654, now seen corresponding path program 18 times [2021-06-05 07:29:18,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:29:18,405 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383248067] [2021-06-05 07:29:18,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:29:18,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:29:18,481 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 07:29:18,481 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:29:18,481 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383248067] [2021-06-05 07:29:18,481 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383248067] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:18,481 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782476402] [2021-06-05 07:29:18,481 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 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 07:29:18,539 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 07:29:18,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:29:18,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 07:29:18,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:29:18,707 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 07:29:18,709 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782476402] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:18,709 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:29:18,709 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 07:29:18,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626668973] [2021-06-05 07:29:18,709 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:29:18,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:29:18,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:29:18,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:29:18,710 INFO L87 Difference]: Start difference. First operand 4144 states and 11542 transitions. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:19,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:29:19,191 INFO L93 Difference]: Finished difference Result 6621 states and 17407 transitions. [2021-06-05 07:29:19,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 07:29:19,192 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-06-05 07:29:19,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:29:19,200 INFO L225 Difference]: With dead ends: 6621 [2021-06-05 07:29:19,200 INFO L226 Difference]: Without dead ends: 6469 [2021-06-05 07:29:19,200 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 456.3ms TimeCoverageRelationStatistics Valid=392, Invalid=1248, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 07:29:19,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6469 states. [2021-06-05 07:29:19,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6469 to 4249. [2021-06-05 07:29:19,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4249 states, 4248 states have (on average 2.803201506591337) internal successors, (11908), 4248 states have internal predecessors, (11908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:19,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4249 states to 4249 states and 11908 transitions. [2021-06-05 07:29:19,263 INFO L78 Accepts]: Start accepts. Automaton has 4249 states and 11908 transitions. Word has length 57 [2021-06-05 07:29:19,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:29:19,263 INFO L482 AbstractCegarLoop]: Abstraction has 4249 states and 11908 transitions. [2021-06-05 07:29:19,264 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:19,264 INFO L276 IsEmpty]: Start isEmpty. Operand 4249 states and 11908 transitions. [2021-06-05 07:29:19,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-05 07:29:19,268 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:29:19,269 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, 1, 1] [2021-06-05 07:29:19,476 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-06-05 07:29:19,477 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:29:19,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:29:19,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1964168912, now seen corresponding path program 19 times [2021-06-05 07:29:19,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:29:19,477 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126684515] [2021-06-05 07:29:19,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:29:19,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:29:19,548 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 07:29:19,549 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:29:19,549 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126684515] [2021-06-05 07:29:19,549 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126684515] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:19,549 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054867583] [2021-06-05 07:29:19,549 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 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 07:29:19,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:29:19,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 07:29:19,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:29:19,755 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 07:29:19,755 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054867583] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:19,755 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:29:19,755 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 07:29:19,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025167439] [2021-06-05 07:29:19,756 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:29:19,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:29:19,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:29:19,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:29:19,757 INFO L87 Difference]: Start difference. First operand 4249 states and 11908 transitions. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:20,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:29:20,164 INFO L93 Difference]: Finished difference Result 6984 states and 18791 transitions. [2021-06-05 07:29:20,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 07:29:20,164 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-06-05 07:29:20,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:29:20,172 INFO L225 Difference]: With dead ends: 6984 [2021-06-05 07:29:20,173 INFO L226 Difference]: Without dead ends: 6832 [2021-06-05 07:29:20,173 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 384.7ms TimeCoverageRelationStatistics Valid=382, Invalid=1178, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 07:29:20,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6832 states. [2021-06-05 07:29:20,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6832 to 4369. [2021-06-05 07:29:20,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4369 states, 4368 states have (on average 2.8120421245421245) internal successors, (12283), 4368 states have internal predecessors, (12283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:20,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4369 states to 4369 states and 12283 transitions. [2021-06-05 07:29:20,254 INFO L78 Accepts]: Start accepts. Automaton has 4369 states and 12283 transitions. Word has length 57 [2021-06-05 07:29:20,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:29:20,254 INFO L482 AbstractCegarLoop]: Abstraction has 4369 states and 12283 transitions. [2021-06-05 07:29:20,254 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:20,254 INFO L276 IsEmpty]: Start isEmpty. Operand 4369 states and 12283 transitions. [2021-06-05 07:29:20,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-05 07:29:20,258 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:29:20,258 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, 1, 1] [2021-06-05 07:29:20,459 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:29:20,459 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:29:20,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:29:20,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1161599372, now seen corresponding path program 20 times [2021-06-05 07:29:20,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:29:20,461 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037148870] [2021-06-05 07:29:20,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:29:20,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:29:20,530 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 07:29:20,530 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:29:20,531 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037148870] [2021-06-05 07:29:20,531 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037148870] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:20,531 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260121007] [2021-06-05 07:29:20,531 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 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 07:29:20,577 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 07:29:20,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:29:20,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 07:29:20,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:29:20,841 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 07:29:20,842 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260121007] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:20,842 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:29:20,842 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 07:29:20,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768982936] [2021-06-05 07:29:20,842 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 07:29:20,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:29:20,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 07:29:20,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2021-06-05 07:29:20,843 INFO L87 Difference]: Start difference. First operand 4369 states and 12283 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:21,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:29:21,704 INFO L93 Difference]: Finished difference Result 9343 states and 25074 transitions. [2021-06-05 07:29:21,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 07:29:21,704 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-06-05 07:29:21,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:29:21,714 INFO L225 Difference]: With dead ends: 9343 [2021-06-05 07:29:21,715 INFO L226 Difference]: Without dead ends: 8737 [2021-06-05 07:29:21,715 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1073 ImplicationChecksByTransitivity, 770.8ms TimeCoverageRelationStatistics Valid=739, Invalid=2683, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 07:29:21,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8737 states. [2021-06-05 07:29:21,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8737 to 4286. [2021-06-05 07:29:21,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4286 states, 4285 states have (on average 2.779229871645274) internal successors, (11909), 4285 states have internal predecessors, (11909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:21,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4286 states to 4286 states and 11909 transitions. [2021-06-05 07:29:21,794 INFO L78 Accepts]: Start accepts. Automaton has 4286 states and 11909 transitions. Word has length 57 [2021-06-05 07:29:21,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:29:21,794 INFO L482 AbstractCegarLoop]: Abstraction has 4286 states and 11909 transitions. [2021-06-05 07:29:21,794 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:21,794 INFO L276 IsEmpty]: Start isEmpty. Operand 4286 states and 11909 transitions. [2021-06-05 07:29:21,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-05 07:29:21,799 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:29:21,799 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, 1, 1] [2021-06-05 07:29:22,012 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:29:22,013 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:29:22,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:29:22,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1989449508, now seen corresponding path program 21 times [2021-06-05 07:29:22,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:29:22,013 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995288618] [2021-06-05 07:29:22,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:29:22,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:29:22,094 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 07:29:22,094 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:29:22,094 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995288618] [2021-06-05 07:29:22,094 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995288618] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:22,095 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967075597] [2021-06-05 07:29:22,095 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 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 07:29:22,148 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 07:29:22,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:29:22,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 07:29:22,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:29:22,316 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 07:29:22,316 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967075597] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:22,316 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:29:22,317 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 07:29:22,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18086077] [2021-06-05 07:29:22,317 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:29:22,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:29:22,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:29:22,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:29:22,318 INFO L87 Difference]: Start difference. First operand 4286 states and 11909 transitions. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:22,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:29:22,876 INFO L93 Difference]: Finished difference Result 7161 states and 18719 transitions. [2021-06-05 07:29:22,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 07:29:22,876 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-06-05 07:29:22,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:29:22,884 INFO L225 Difference]: With dead ends: 7161 [2021-06-05 07:29:22,884 INFO L226 Difference]: Without dead ends: 7009 [2021-06-05 07:29:22,885 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 567 ImplicationChecksByTransitivity, 485.3ms TimeCoverageRelationStatistics Valid=492, Invalid=1578, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 07:29:22,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7009 states. [2021-06-05 07:29:22,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7009 to 4481. [2021-06-05 07:29:22,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4481 states, 4480 states have (on average 2.7988839285714286) internal successors, (12539), 4480 states have internal predecessors, (12539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:22,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4481 states to 4481 states and 12539 transitions. [2021-06-05 07:29:22,951 INFO L78 Accepts]: Start accepts. Automaton has 4481 states and 12539 transitions. Word has length 57 [2021-06-05 07:29:22,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:29:22,951 INFO L482 AbstractCegarLoop]: Abstraction has 4481 states and 12539 transitions. [2021-06-05 07:29:22,951 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:22,951 INFO L276 IsEmpty]: Start isEmpty. Operand 4481 states and 12539 transitions. [2021-06-05 07:29:22,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-05 07:29:22,955 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:29:22,955 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, 1, 1] [2021-06-05 07:29:23,155 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2021-06-05 07:29:23,156 INFO L430 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:29:23,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:29:23,156 INFO L82 PathProgramCache]: Analyzing trace with hash -662949862, now seen corresponding path program 22 times [2021-06-05 07:29:23,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:29:23,156 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057758172] [2021-06-05 07:29:23,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:29:23,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:29:23,231 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 07:29:23,231 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:29:23,231 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057758172] [2021-06-05 07:29:23,231 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057758172] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:23,232 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856330819] [2021-06-05 07:29:23,232 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 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 07:29:23,284 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 07:29:23,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:29:23,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 07:29:23,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 07:29:23,455 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 07:29:23,455 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856330819] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:23,455 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 07:29:23,455 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 07:29:23,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248821157] [2021-06-05 07:29:23,455 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 07:29:23,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 07:29:23,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 07:29:23,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2021-06-05 07:29:23,456 INFO L87 Difference]: Start difference. First operand 4481 states and 12539 transitions. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:24,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 07:29:24,041 INFO L93 Difference]: Finished difference Result 7612 states and 20416 transitions. [2021-06-05 07:29:24,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 07:29:24,042 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-06-05 07:29:24,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 07:29:24,051 INFO L225 Difference]: With dead ends: 7612 [2021-06-05 07:29:24,051 INFO L226 Difference]: Without dead ends: 7460 [2021-06-05 07:29:24,052 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 514 ImplicationChecksByTransitivity, 535.1ms TimeCoverageRelationStatistics Valid=467, Invalid=1425, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 07:29:24,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7460 states. [2021-06-05 07:29:24,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7460 to 4601. [2021-06-05 07:29:24,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4601 states, 4600 states have (on average 2.807391304347826) internal successors, (12914), 4600 states have internal predecessors, (12914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:24,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4601 states to 4601 states and 12914 transitions. [2021-06-05 07:29:24,123 INFO L78 Accepts]: Start accepts. Automaton has 4601 states and 12914 transitions. Word has length 57 [2021-06-05 07:29:24,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 07:29:24,123 INFO L482 AbstractCegarLoop]: Abstraction has 4601 states and 12914 transitions. [2021-06-05 07:29:24,123 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 07:29:24,123 INFO L276 IsEmpty]: Start isEmpty. Operand 4601 states and 12914 transitions. [2021-06-05 07:29:24,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-05 07:29:24,127 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 07:29:24,128 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, 1, 1] [2021-06-05 07:29:24,328 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:29:24,328 INFO L430 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 07:29:24,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 07:29:24,329 INFO L82 PathProgramCache]: Analyzing trace with hash -723417374, now seen corresponding path program 23 times [2021-06-05 07:29:24,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 07:29:24,329 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998919096] [2021-06-05 07:29:24,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 07:29:24,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 07:29:24,399 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 07:29:24,400 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 07:29:24,400 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998919096] [2021-06-05 07:29:24,400 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998919096] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 07:29:24,400 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324646493] [2021-06-05 07:29:24,400 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 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 07:29:24,448 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 07:29:24,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 07:29:24,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 07:29:24,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2021-06-05 07:43:10,725 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 07:43:10,725 WARN L547 AbstractCegarLoop]: Verification canceled [2021-06-05 07:43:10,727 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 07:43:10,728 WARN L196 ceAbstractionStarter]: Timeout [2021-06-05 07:43:10,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 07:43:10 BasicIcfg [2021-06-05 07:43:10,728 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 07:43:10,729 INFO L168 Benchmark]: Toolchain (without parser) took 871220.36 ms. Allocated memory was 348.1 MB in the beginning and 2.0 GB in the end (delta: 1.7 GB). Free memory was 310.8 MB in the beginning and 1.2 GB in the end (delta: -852.6 MB). Peak memory consumption was 1.3 GB. Max. memory is 16.0 GB. [2021-06-05 07:43:10,729 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 348.1 MB. Free memory was 328.7 MB in the beginning and 328.6 MB in the end (delta: 70.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 07:43:10,729 INFO L168 Benchmark]: CACSL2BoogieTranslator took 414.21 ms. Allocated memory is still 348.1 MB. Free memory was 310.5 MB in the beginning and 313.3 MB in the end (delta: -2.8 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.0 GB. [2021-06-05 07:43:10,729 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.27 ms. Allocated memory is still 348.1 MB. Free memory was 313.3 MB in the beginning and 311.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 07:43:10,729 INFO L168 Benchmark]: Boogie Preprocessor took 31.92 ms. Allocated memory is still 348.1 MB. Free memory was 311.2 MB in the beginning and 310.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 07:43:10,729 INFO L168 Benchmark]: RCFGBuilder took 528.18 ms. Allocated memory is still 348.1 MB. Free memory was 310.2 MB in the beginning and 286.1 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-06-05 07:43:10,729 INFO L168 Benchmark]: TraceAbstraction took 870196.21 ms. Allocated memory was 348.1 MB in the beginning and 2.0 GB in the end (delta: 1.7 GB). Free memory was 286.1 MB in the beginning and 1.2 GB in the end (delta: -877.3 MB). Peak memory consumption was 1.2 GB. Max. memory is 16.0 GB. [2021-06-05 07:43:10,730 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 348.1 MB. Free memory was 328.7 MB in the beginning and 328.6 MB in the end (delta: 70.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 414.21 ms. Allocated memory is still 348.1 MB. Free memory was 310.5 MB in the beginning and 313.3 MB in the end (delta: -2.8 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 42.27 ms. Allocated memory is still 348.1 MB. Free memory was 313.3 MB in the beginning and 311.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 31.92 ms. Allocated memory is still 348.1 MB. Free memory was 311.2 MB in the beginning and 310.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 528.18 ms. Allocated memory is still 348.1 MB. Free memory was 310.2 MB in the beginning and 286.1 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 870196.21 ms. Allocated memory was 348.1 MB in the beginning and 2.0 GB in the end (delta: 1.7 GB). Free memory was 286.1 MB in the beginning and 1.2 GB in the end (delta: -877.3 MB). Peak memory consumption was 1.2 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 722]: 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 58 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while ExplicitLhsPolynomialRelations was build 0 of 1 xjuncts. - TimeoutResultAtElement [Line: 721]: 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 58 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while ExplicitLhsPolynomialRelations was build 0 of 1 xjuncts. - TimeoutResultAtElement [Line: 730]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was analyzing trace of length 58 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while ExplicitLhsPolynomialRelations was build 0 of 1 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 88 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 870074.5ms, OverallIterations: 50, TraceHistogramMax: 4, EmptinessCheckTime: 215.8ms, AutomataDifference: 16225.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 105.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 4467 SDtfs, 27863 SDslu, 39819 SDs, 0 SdLazy, 6650 SolverSat, 1812 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3681.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3453 GetRequests, 2036 SyntacticMatches, 28 SemanticMatches, 1389 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13226 ImplicationChecksByTransitivity, 14782.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=4601occurred in iteration=49, InterpolantAutomatonStates: 1181, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 3144.8ms AutomataMinimizationTime, 49 MinimizatonAttempts, 80952 StatesRemovedByMinimization, 49 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 410.3ms SsaConstructionTime, 1018.5ms SatisfiabilityAnalysisTime, 11639.7ms InterpolantComputationTime, 4847 NumberOfCodeBlocks, 4847 NumberOfCodeBlocksAsserted, 148 NumberOfCheckSat, 4756 ConstructedInterpolants, 0 QuantifiedInterpolants, 35246 SizeOfPredicates, 84 NumberOfNonLiveVariables, 5712 ConjunctsInSsa, 484 ConjunctsInUnsatCore, 91 InterpolantComputations, 7 PerfectInterpolantSequences, 0/930 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